Udaipur Solar Observatory (USO) Publications | Physical Research Laboratory

A type II solar radio burst without a coronal mass ejection association

Date of Publication: 12/12/2025
Journal Impact Factor: 1.6
Journal: J. Astrophys. Astr.

Authors

Anshu Kumari, Nat Gopalswamy

Source location and evolution of a multilane type II radio burst

Date of Publication: 19/11/2025
Journal Impact Factor: 6.1
Journal: Astronomy & Astrophysics

Authors

P. Zucca, P. Zhang, K. Kozarev, M. Nedal, S. Dey, M. Mancini, Anshu Kumari, D. E. Morosan, B. Dabrowski, P. T. Gallagher, A. Krankowski and C. Vocks

Spacecraft Radio Signal Polarization Calibration

Date of Publication: 23/10/2025
Journal Impact Factor: 4.7
Journal: Front. Astron. Space Sci.

Authors

Elizabeth Jensen, Amanda Kepley, David B. Wexler, Adam Kobelski, Jason E Kooi, Aahil Valliani, Aidan Cho, Egan Heisey-Grove, Anshu Kumari, Shing F Fung

Contrasting Latitudinal/Longitudinal Response of Equatorial Ionization Anomaly (EIA) Around ± Longitude Sectors During the 23–24 April 2023 Geomagnetic Storm

Date of Publication: 18/10/2025
Journal Impact Factor: 2.9
Journal: Journal of Geophysical Research

Authors

S. S. Rao, Nandita Srivastava, D. Chakrabarty, Monti Chakraborty

HEL1OS – A Hard X-ray Spectrometer on Board Aditya-L1

Date of Publication: 08/10/2025
Journal Impact Factor: 2.4
Journal: Solar Physics

Authors

Nandi, A., Manju Sudhakar, Srikar Paavan Tadepalli, Anand Jain, Brajpal Singh, Reenu Palawat, Ravishankar B. T., Bhuwan Joshi, Monoj Bug, Anurag Tyagi, Sumit Kumar, Mukund Kumar Thakur, Akanksha Baggan, Srikanth T., Arjun Dey, Veeresha D. R., Abhijit Avinash Adoni, Padmanabhan, Vivechana M. S., Evangelin Leeja Justin, James M. P., Kinshuk Gupta, Shalini Maiya P. R., Lakshmi A., Sajjade Faisal Mustafa, Vivek R. Subramanian, Gayatri Malhotra, Shree Niwas Sahu, Murugiah S., Medasani Thejasree, Narayan Rao G. S., Rethika T., Motamarri Srikanth, Ravi A., Nashiket Premlal Parate & Nigar Shaji

A Statistical Study of delta-Sunspots from Solar Cycle 23 to 25

Date of Publication: 08/10/2025
Journal Impact Factor: 2.4
Journal: Solar Physics, 300, 151

Authors

Louis, R. E.

Blowout Expansion of Overlying Coronal Loops and Subsequent Filament Eruption: AIA and RHESSI Observations

Date of Publication: 03/10/2025
Journal Impact Factor: 5.4
Journal: The Astrophysical Journal

Authors

Kharayat, Hema, Bhuwan Joshi, Binal D. Patel, Ramesh Chandra

Assessing Dst prediction models for forecasting the geoeffectiveness of ICME structures

Date of Publication: 09/08/2025
Journal Impact Factor: 1.6
Journal: Journal of Astrophysics and Astronomy

Authors

Shanmugha Balan, Ranadeep Sarkar and Nandita Srivastava

Indian solar and heliospheric physics vision: Fundamental science to a space weather resilient society

Date of Publication: 08/08/2025
Journal Impact Factor: 1.6
Journal: Journal of Astrophysics and Astronomy

Authors

Dibyendu Nandy, Vaibhav Pant, Megha Anand, Jithu J. Athalathil, Arun Kumar Awasthi, Kshitij Bane, Dipankar Banerjee, B. Ravindra, Ankush Bhaskar, R. Bhattacharyya, Prantika Bhowmik, Ramesh Chandra, Piyali Chatterjee, Subhamoy Chatterjee, A. P. Dimri, Sneha A. Gokani, Shravan Hanasoge, Soumitra Hazra, Rajmal Jain, Bhuvan Joshi, K. Nagaraju, Devojyoti Kansabanik, Bidya Binay Karak, C. Kathiravan, Raveena Khan, Hariharan Krishnan, Brajesh Kumar, Sanjay Kumar, Anshu Kumari, Satabdwa Majumdar, Prateek Mayank, Sudheer Mishra, Wageesh Mishra, Atul Mohan, Surajit Mondal, V. Mugundhan, Shyama Narendranath, Divya Oberoi, Megha Pandya, Ritesh Patel, Arghyadeep Paul, Avijeet Prasad, K. Sasikumar Raja, Abhishek Rajhans, R. Ramesh, Chitradeep Saha, K. Sankarasanubramanian, R. Selvakumaran, Rahul Sharma, Rohit Sharma, Arpit Kumar Shrivastav, Nishant Singh, Shirsh Lata Soni, Abhishek K. Srivastava, Nandita Srivastava, Durgesh Tripathi, Wahab Uddin, Bhargav Vaidya, P. Vemareddy, Geeta Vichare, Gangadha

Understanding the Magnetic Field and Plasma-β along Umbral Fan Loops Traced Using 3 Minute Slow Waves

Date of Publication: 17/07/2025
Journal Impact Factor: 11.7
Journal: The Astrophysical Journal Letters

Authors

Ananya Rawat, Girjesh Gupta, Tom Van Doorsselaere, S. Krishna Prasad, and Robertus Erdélyi

Insights into chromospheric large-scale flows using Nobeyama 17 GHz radio observations

Date of Publication: 08/07/2025
Journal Impact Factor: 5.8
Journal: Astronomy & Astrophysics Letters

Authors

Srinjana Routh, Anshu Kumari, Vaibhav Pant, Jaydeep Kandekar, Dipankar Banerjee, Mohd. Saleem Khan and Dibya Kirti Mishra

On the role of source surface height and magnetograms in solar wind forecast accuracy

Date of Publication: 30/06/2025
Journal Impact Factor: 2.9
Journal: Journal of Space Weather and Space Climate

Authors

Sandeep Kumar, Nandita Srivastava, Dana-Camelia Talpeanu, Marilena Mierla , Elke D’Huys , and Marie Dominique

Variation in horizontal component of geomagnetic field during the April 2023 space weather event over ±75° longitude sectors:Insights

Date of Publication: 27/06/2025
Journal Impact Factor: 1.6
Journal: Journal of Astrophysics and Astronomy

Authors

Rao, S.S., Srivastava, N. and Chakrabarty, D.

The source sizes of type II radio bursts with LOFAR

Date of Publication: 20/06/2025
Journal Impact Factor: 5.8
Journal: Astronomy and Astrophysics

Authors

Anshu Kumari, D.E. Morosan, V. Mugundhan, P. Zhang, J. Magdalenić, P. Zucca, E.K.J. Kilpua, F. Daei

On the limitations of using metric radio bursts as diagnostic tools for interplanetary coronal mass ejections

Date of Publication: 16/05/2025
Journal Impact Factor: 5.8
Journal: Astronomy & Astrophysics Letters

Authors

J. Kandekar and Anshu Kumari

Investigating Bidirectional Flows in a Quiescent Prominence Using MAST Ca II 8542 Å Line Scan Observations

Date of Publication: 15/05/2025
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal

Authors

Sandeep K. Dubey, Andrew Hillier, Shibu K. Mathew

Multi-height Study of the Chromospheric Inverse Evershed Flow and its Association with Photospheric Flows

Date of Publication: 08/05/2025
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal

Authors

Sandeep K. Dubey, Shibu K. Mathew, Christian Beck, and Debi P. Choudhary

The Fluxgate Magnetometer (MAG) on Board Aditya-L1 Spacecraft

Date of Publication: 18/03/2025
Journal Impact Factor: 2.7
Journal: Solar Physics

Authors

Vipin K. Yadav,Y. Vijaya, B. Krishnam Prasad, P.T. Srikar, Monika Mahajan, K.V.L.N. Mallikarjun, Syeeda N. Zamani, Satyanarayana Kumari B., K.A. Lohar M.M. Kandpal, S. Narendra, Vijay S. Rai, Abhijit A. Adoni, D.R. Veeresha, Smaran T.S.· Kalpana A., Nandita Srivastava, Geeta Vichare

Observational study of the atmospheric gravity waves in the lower solar atmosphere

Date of Publication: 10/01/2025
Journal Impact Factor: 4.8
Journal: MNRAS

Authors

Ravi Chaurasiya and Ankala Raja Bayanna

Predicting Maximum Amplitude and Rise Time of Solar Cycle 25 Using Modified Geomagnetic Precursor Technique

Date of Publication: 16/12/2024
Journal Impact Factor: 2.7
Journal: Solar Physics

Authors

Kavita Sharma, Anushree Rajwanshi, Sachin Kumar, Rupesh M. Das, ·Nandita Srivastava

The effect of data-driving and relaxation models on magnetic flux rope evolution and stability

Date of Publication: 02/12/2024
Journal Impact Factor: 5.8
Journal: Astronomy and Astrophysics

Authors

A. Wagner, D. J. Price, S. Bourgeois, F. Daei, J. Pomoell, S. Poedts, Anshu Kumari, T. Barata, R. Erdélyi, E. K. J. Kilpua

On the Influence of the Solar Wind on the Propagation of Earth-impacting Coronal Mass Ejections

Date of Publication: 03/11/2024
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal

Authors

Sandeep Kumar , Nandita Srivastava, Nat Gopalswamy, and Ashutosh Dash

Umbral flashes and their association with running penumbral waves: a study using MAST Ca II 8542 Å narrow-band observations

Date of Publication: 23/10/2024
Journal Impact Factor: 4.8
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Sandeep K Dubey , Shibu K Mathew , A Raja Bayanna

Investigation of Phase Shift and Travel Time of Acoustic Waves in the Lower Solar Atmosphere Using Multiheight Velocities

Date of Publication: 23/08/2024
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal

Authors

Hirdesh Kumar, Brajesh Kumar, Shibu K. Mathew, A. Raja Bayanna, S. P. Rajaguru

Modeling the Magnetic Vectors of Interplanetary Coronal Mass Ejections at Different Heliocentric Distances with INFROS

Date of Publication: 07/08/2024
Journal Impact Factor: 8.6
Journal: The Astrophysical Journal Supplement Series

Authors

Ranadeep Sarkar, Nandita Srivastava, Nat Gopalswamy, and Emilia Kilpua

Interplanetary Type IV Solar Radio Bursts: A Comprehensive Catalog and Statistical Results

Date of Publication: 07/08/2024
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal

Authors

Atul Mohan, Nat Gopalswamy, Anshu Kumari, Sachiko Akiyama, and Sindhuja G

Effect of area divergence and frequency on damping of slow magnetoacoustic waves propagating along umbral fan loops

Date of Publication: 05/08/2024
Journal Impact Factor: 4.8
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Ananya Rawat and Girjesh Gupta

Predicting Interplanetary Shock Occurrence for Solar Cycle 25: Opportunities and Challenges in Space Weather Research

Date of Publication: 02/08/2024
Journal Impact Factor: 4.1
Journal: Space Weather

Authors

Denny M. Oliveira, Robert C. Allen, Livia R. Alves, Séan P. Blake, Brett A. Carter, Dibyendu Chakrabarty, Giulia D’Angelo, Kevin Delano, Ezequiel Echer, Cristian P. Ferradas, Matt G. Finley, Bea Gallardo-Lacourt, Dan Gershman, Jesper W. Gjerloev, John Bosco Habarulema, Michael D. Hartinger, Rajkumar Hajra, Hisashi Hayakawa, Liisa Juusola, Karl M. Laundal, Robert J. Leamon, Michael Madelaire, Miguel Martínez-Ledesma, Scott M. McIntosh, Yoshizumi Miyoshi, Mark B. Moldwin, Emmanuel Nahayo, Dibyendu Nandy, Bhosale Nilam, Katariina Nykyri, William R. Paterson, Mirko Piersanti, Ermanno Pietropaolo, Craig J. Rodger, Trunali Shah, Andy W. Smith, Nandita Srivastava, Bruce T. Tsurutani, S. Tulasi Ram, Lisa A. Upton, Bhaskara Veenadhari, Sergio Vidal-Luengo, Ari Viljanen, Sarah K. Vines, Vipin K. Yadav, Jeng-Hwa Yee, James W. Weygand

On the Response of the Transition Region and the Corona to Rapid Excursions in the Chromosphere

Date of Publication: 30/07/2024
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal (ApJ)

Authors

Ravi Chaurasiya, A. Raja Bayanna, R. E. Louis, T. M. D. Pereira and S. K. Mathew

Exploring the generation and annihilation of three-dimensional nulls through MHD simulations in initially chaotic magnetic field devoid of nulls

Date of Publication: 10/07/2024
Journal Impact Factor: 2.0
Journal: Physics of Plasmas

Authors

Yogesh Kumar Maurya, Ramit Bhattacharyya, David I Pontin, and Sanjay Kumar

Source Region and Launch Characteristics of Magnetic-arch-blowout Solar Coronal Mass Ejections Driven by Homologous Compact-flare Blowout Jets

Date of Publication: 28/06/2024
Journal Impact Factor: 4.8
Journal: The Astrophysical Journal

Authors

Binal D. Patel, Bhuwan Joshi, Alphonse C. Sterling, and Ronald L. Moore

Source Region and Launch Characteristics of Magnetic-arch-blowout Solar Coronal Mass Ejections Driven by Homologous Compact-flare Blowout Jets

Date of Publication: 28/06/2024
Journal Impact Factor: 5.8
Journal: The Astrophysical Journal

Authors

Binal D. Patel, Bhuwan Joshi, Alphonse C. Sterling, and Ronald L. Moore

Exploring Magnetic Coupling of the Solar Atmosphere Through Frequency Modulations of 3-min Slow Magnetoacoustic Waves

Date of Publication: 11/06/2024
Journal Impact Factor
Journal: Bulletin de la Société Royale des Sciences de Liège

Authors

Ananya Rawat and Girjesh Gupta

Generation and annihilation of three dimensional magnetic nulls in extrapolated solar coronal magnetic field: data-based Implicit Large Eddy simulation

Date of Publication: 07/06/2024
Journal Impact Factor: 2.9
Journal: Physica Scripta

Authors

Yogesh Kumar Maurya, Ramit Bhattacharyya, and David I Pontin

Study of magnetic relaxation in MHD simulations of energetically different flares

Date of Publication: 08/05/2024
Journal Impact Factor: 2.2
Journal: Physics of Plasmas

Authors

Satyam Agarwal, Ramit Bhattacharyya

Classification of circular polarization Stokes profiles in a sunspot using k-means clustering

Date of Publication: 01/03/2024
Journal Impact Factor: 2.6
Journal: Advances in Space Research, 73, 3256

Authors

Rohan Eugene Louis, Shibu K. Mathew, A. Raja Bayanna

Observations of Geomagnetic Crochet at High-Latitudes Due To X1.5 Class Solar Flare on 3 July 2021

Date of Publication: 23/02/2024
Journal Impact Factor: 4.0
Journal: Space Weather

Authors

S. S. Rao, Nandita Srivastava, Monti Chakraborty, Sandeep Kumar, D. Chakrabarty

Changes in Photospheric Lorentz Force in Eruptive and Confined Solar Flares

Date of Publication: 08/02/2024
Journal Impact Factor: 4
Journal: The Astrophysical Journal

Authors

Samriddhi Sankar Maity, Ranadeep Sarkar, Piyali Chatterjee, and Nandita Srivastava

Study of Reconnection Dynamics and Plasma Relaxation in MHD Simulation of a Solar Flare

Date of Publication: 05/02/2024
Journal Impact Factor: 2
Journal: Solar Physics

Authors

Satyam Agarwal, Ramit Bhattacharyya, Shangbin Yang

Rotation of a Stealth CME on 2012 October 5 Observed in the Inner Heliosphere

Date of Publication: 16/11/2023
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Sandeep Kumar, Dinesha V. Hegde, Nandita Srivastava, Nikolai V. Pogorelov, Nat Gopalswamy, and Seiji Yashiro

Exploring source region of 3-min slow magnetoacoustic waves observed in coronal fan loops rooted in sunspot umbra

Date of Publication: 16/08/2023
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Ananya Rawat, Girjesh R Gupta

Circular ribbon flare triggered from an incomplete fan-spine configuration

Date of Publication: 10/07/2023
Journal Impact Factor
Journal: Astronomy & Astrophysics

Authors

Prabir K. Mitra, Astrid M. Veronig and Bhuwan Joshi

Magnetohydrodynamics simulation of magnetic flux rope formation in a quadrupolar magnetic field configuration

Date of Publication: 22/06/2023
Journal Impact Factor
Journal: Plasma Physics and Controlled Fusion

Authors

Sanjay Kumar, Avijeet Prasad, Sushree S Nayak, Satyam Agarwal and R Bhattacharyya

Investigating the variations in the composition and heating of interacting ICMEs

Date of Publication: 30/05/2023
Journal Impact Factor
Journal: Front. Astron. Space Sci.

Authors

Nandita Srivastava, Zavkiddin Mirtoshev and Wageesh Mishra

Hall effect on the magnetic reconnections during the evolution of a three-dimensional magnetic flux rope

Date of Publication: 19/05/2023
Journal Impact Factor
Journal: Physica Scripta

Authors

Kamlesh Bora, Satyam Agarwal, Sanjay Kumar, Ramit Bhattacharyya

On the propagation of gravity waves in the lower solar atmosphere in different magnetic configurations

Date of Publication: 08/05/2023
Journal Impact Factor
Journal: Advances in Space Research

Authors

Hirdesh Kumar, Brajesh Kumar, and S.P. Rajaguru

Solar Hysteresis Pattern and Spectral Components in TEC Time Series (GPS and TIE-GCM) of the Quadrilaterally Coupled Geomagnetic Conjugate Low-Latitude Stations

Date of Publication: 26/04/2023
Journal Impact Factor
Journal: Journal of Geophysical Research, Space Physics

Authors

S. S. Rao, D. Chakrabarty, Nandita Srivastava

A study of the propagation of magnetoacoustic waves in small-scale magnetic fields using solar photospheric and chromospheric Dopplergrams: HMI/SDO and MAST observations

Date of Publication: 17/04/2023
Journal Impact Factor
Journal: Journal of Atmospheric and Solar-Terrestrial Physics

Authors

Hirdesh Kumar, Brajesh Kumar, S. P. Rajaguru, Shibu K. Mathew, and Ankala Raja Bayanna

Magnetic reconnections as the underlying cause of spontaneous generation and annihilation of three-dimensional magnetic nulls

Date of Publication: 01/02/2023
Journal Impact Factor
Journal: Physics of Plasmas 30, 022901 (2023)

Authors

Yogesh Kumar Maurya, Ramit Bhattacharyya and David Iain Pontin

Sustained Heating of the Chromosphere and Transition Region Over a Sunspot Light Bridge

Date of Publication: 01/02/2023
Journal Impact Factor
Journal: The Astrophysical Journal, 942, 62

Authors

Louis, Rohan E.; Mathew, Shibu K.; Bayanna, A. Raja; Beck, Christian; Choudhary, Debi P.

Evolution of Magnetic Fields and Energy Release Processes during Homologous Eruptive Flares

Date of Publication: 27/01/2023
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Suraj Sahu, Bhuwan Joshi, Avijeet Prasad, Kyung-Suk Cho

Near-Earth Interplanetary Coronal Mass Ejections and Their Association with DH Type II Radio Bursts During Solar Cycles 23 and 24

Date of Publication: 25/10/2022
Journal Impact Factor
Journal: Solar Physics

Authors

Binal D. Patel, Bhuwan Joshi, Kyung-Suk Cho, Rok-Soon Kim, Yong-Jae Moon

A Parametric Study of Performance of Two Solar Wind Velocity Forecasting Models During 2006–2011

Date of Publication: 02/09/2022
Journal Impact Factor
Journal: Space Weather

Authors

Sandeep Kumar and Nandita Srivastava

A Comparative Analysis of Machine-learning Models for Solar Flare Forecasting: Identifying High-performing Active Region Flare Indicators

Date of Publication: 12/08/2022
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Suvadip Sinha, Om Gupta, Vishal Singh, B. Lekshmi, Dibyendu Nandy, Dhrubaditya Mitra, Saikat Chatterjee, Sourangshu Bhattacharya, Saptarshi Chatterjee, Nandita Srivastava, Axel Brandenburg, and Sanchita Pal

Effects of Initial Conditions on Magnetic Reconnection in a Solar Transient

Date of Publication: 18/07/2022
Journal Impact Factor
Journal: Solar Physics

Authors

Satyam Agarwal, Ramit Bhattacharyya, Thomas Wiegelmann

Homologous Compact Major Blowout-eruption Solar Flares and their Production of Broad CMEs

Date of Publication: 03/05/2022
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Suraj Sahu, Bhuwan Joshi, Alphonse C. Sterling, Prabir K. Mitra, Ronald L. Moore

Spectroscopic and imaging observations of transient hot and cool loops by IRIS and SDO

Date of Publication: 31/03/2022
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Girjesh R Gupta, Sushree S Nayak

Multiwavelength Signatures of Episodic Null Point Reconnection in a Quadrupolar Magnetic Configuration and the Cause of Failed Flux Rope Eruption

Date of Publication: 21/02/2022
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Prabir K. Mitra, Bhuwan Joshi, Astrid M. Veronig, Thomas Wiegelmann

Comparison of the Hall Magnetohydrodynamics and Magnetohydrodynamics Evolution of a Flaring Solar Active Region

Date of Publication: 04/02/2022
Journal Impact Factor
Journal: The Astrophysical Jouranl

Authors

K. Bora, R. Bhattacharyya, Avijeet Prasad, Bhuwan Joshi, and Qiang Hu

Editorial: Space Weather Prediction: Challenges and Prospects

Date of Publication: 17/12/2021
Journal Impact Factor
Journal: Frontiers in Astronomy and Space Sciences

Authors

Nandita Srivastava, Marilena Mierla and Jie Zhang

Investigation of two coronal mass ejections from circular ribbon source region: Origin, Sun-Earth propagation and Geoeffectiveness

Date of Publication: 16/12/2021
Journal Impact Factor
Journal: Research in Astronomy and Astrophysics (RAA)

Authors

Syed Ibrahim, Wahab Uddin, Bhuwan Joshi, Ramesh Chandra, Arun Kumar Awasthi

Understanding the Origins of Problem Geomagnetic Storms Associated with “Stealth” Coronal Mass Ejections

Date of Publication: 03/11/2021
Journal Impact Factor
Journal: Space Science Reviews, 217, 82 (2021)

Authors

Nariaki V. Nitta, Tamitha Mulligan, Emilia K. J. Kilpua, Benjamin J. Lynch, Marilena Mierla, Jennifer O’Kane, Paolo Pagano, Erika Palmerio, Jens Pomoell, Ian R. Richardson, Luciano Rodriguez, Alexis P. Rouillard, Suvadip Sinha, Nandita Srivastava, Dana-Camelia Talpeanu, Stephanie L. Yardley & Andrei N. Zhukov

DH Type II Radio Bursts During Solar Cycles 23 and 24: Frequency-Dependent Classification and Their Flare-CME Associations

Date of Publication: 29/09/2021
Journal Impact Factor
Journal: Solar Physics

Authors

Binal D. Patel, Bhuwan Joshi, Kyung-Suk Cho, Rok-Soon Kim

Radial Sizes and Expansion Behavior of ICMEs in Solar Cycles 23 and 24

Date of Publication: 13/09/2021
Journal Impact Factor
Journal: Front. Astron. Space Sci.

Authors

Wageesh Mishra,Urmi Doshi and Nandita Srivastava

Differential rotation of the solar transition region from STEREO/EUVI 30.4-nm images

Date of Publication: 09/08/2021
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, Volume 506, Pages 4952-4959

Authors

Jaidev Sharma, Brajesh Kumar, Anil K Malik, Hari Om Vats

Multipoint remote and in situ observations of interplanetary coronal mass ejection structures during 2011 and associated geomagnetic storms

Date of Publication: 13/07/2021
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, Volume 506, Issue 1, September 2021, Pages 1186–1197

Authors

Wageesh Mishra, Kunjal Dave, Nandita Srivastava, Luca Teriaca

Heating of the solar chromosphere in a sunspot light bridge by electric currents

Date of Publication: 13/07/2021
Journal Impact Factor
Journal: Astronomy & Astrophysics Letters, 652, 4

Authors

Rohan Louis, Avijeet Prasad, Christian Beck, Debi Prasad Choudhary, Mehmet S. Yalim

Investigating Remote-Sensing Techniques to Reveal Stealth Coronal Mass Ejections

Date of Publication: 05/07/2021
Journal Impact Factor
Journal: Frontiers in Astronomy and Space Science

Authors

Erika Palmerio, Nariaki V. Nitta, Tamitha Mulligan, Marilena Mierla, Jennifer O’Kane, Ian G. Richardson, Suvadip Sinha, Nandita Srivastava, Stephanie L. Yardley and Andrei N. Zhukov

A Transient Coronal Sigmoid in Active Region NOAA 11909: Build-up Phase, M-class Eruptive Flare, and Associated Fast Coronal Mass Ejection

Date of Publication: 22/06/2021
Journal Impact Factor
Journal: Solar Physics

Authors

Hema Kharayat, Bhuwan Joshi, Prabir K. Mitra, P. K. Manoharan, Christian Monstein

Two-Stage Evolution of an Extended C-Class Eruptive Flaring Activity from Sigmoid Active Region NOAA 12734: SDO and Udaipur-CALLISTO Observations

Date of Publication: 03/06/2021
Journal Impact Factor
Journal: Solar Physics

Authors

Bhuwan Joshi, Prabir K. Mitra, R. Bhattacharyya, Kushagra Upadhyay, Divya Oberoi, K. Sasikumar Raja, Christian Monstein

Two-Stage Evolution of an Extended C-Class Eruptive Flaring Activity from Sigmoid Active Region NOAA 12734: SDO and Udaipur-CALLISTO Observations

Date of Publication: 03/06/2021
Journal Impact Factor
Journal: Solar Physics

Authors

Bhuwan Joshi, Prabir K. Mitra, R. Bhattacharyya, Kushagra Upadhyay, Divya Oberoi, K. Sasikumar Raja & Christian Monstein

Two-Stage Evolution of an Extended C-Class Eruptive Flaring Activity from Sigmoid Active Region NOAA 12734: SDO and Udaipur-CALLISTO Observations

Date of Publication: 03/06/2021
Journal Impact Factor
Journal: Solar Physics

Authors

Bhuwan Joshi, Prabir K. Mitra, R. Bhattacharyya, Kushagra Upadhyay, Divya Oberoi, K. Sasikumar Raja & Christian Monstein

Observations of a prominence eruption and loop contraction

Date of Publication: 16/03/2021
Journal Impact Factor
Journal: Astronomy & Astrophysics

Authors

Pooja Devi, Pascal Démoulin, Ramesh Chandra, Reetika Joshi, Brigitte Schmieder, Bhuwan Joshi

Radio-loud and radio-quiet CMEs: solar cycle dependency, influence on cosmic ray intensity, and geo-effectiveness

Date of Publication: 25/02/2021
Journal Impact Factor
Journal: Astrophysics and Space Science

Authors

Hema Kharayat, Bhuwan Joshi, Ramesh Chandra

Magnetohydrodynamics model of an X-class flare in NOAA active region 12017 initiated with non-force-free extrapolation

Date of Publication: 09/02/2021
Journal Impact Factor
Journal: Physics of Plasmas Brief Communication

Authors

Sushree S Nayak, R Bhattacharyya, and Sanjay Kumar

Magnetic Reconnections in the Presence of Three-Dimensional Magnetic Nulls and Quasi-Separatrix Layers

Date of Publication: 29/01/2021
Journal Impact Factor
Journal: Solar Physics

Authors

Sanjay Kumar, Sushree S Nayak, Avijeet Prasad, Ramit Bhattacharyya

Successive occurrences of quasi-circular ribbon flares in a fan-spine-like configuration involving hyperbolic flux tube

Date of Publication: 22/01/2021
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Prabir K. Mitra and Bhuwan Joshi

Evolutionary stages and triggering process of a complex eruptive flare with circular and parallel ribbons

Date of Publication: 21/01/2021
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Navin Chandra Joshi, Bhuwan Joshi, Prabir K. Mitra

Evolutionary stages and triggering process of a complex eruptive flare with circular and parallel ribbons

Date of Publication: 21/01/2021
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Navin Chandra Joshi, Bhuwan Joshi, Prabir K. Mitra

Homologous Flaring Activity over a Sunspot Light Bridge in an Emerging Active Region

Date of Publication: 14/01/2021
Journal Impact Factor
Journal: Astrophysical Journal Letters, 907, 4

Authors

Rohan E. Louis, Julia K. Thalmann

Evolution of Three-dimensional Coherent Structures in Hall Magnetohydrodynamics

Date of Publication: 13/01/2021
Journal Impact Factor
Journal: ApJ

Authors

K.Bora, R.Bhattacharyya, P.K. Smolarkiewicz

Magnetohydrodynamic Simulation of Magnetic Null-point Reconnections and Coronal Dimmings during the X2.1 Flare in NOAA AR 11283

Date of Publication: 10/12/2020
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Avijeet Prasad, Karin Dissauer, Qiang Hu, R. Bhattacharyya, Astrid M. Veronig, Sanjay Kumar, and Bhuwan Joshi

Ground calibration of Solar X-ray Monitor on board the Chandrayaan-2 orbiter

Date of Publication: 25/11/2020
Journal Impact Factor
Journal: Experimental Astronomy

Authors

N. P. S. Mithun, Santosh V. Vadawale, M. Shanmugam, Arpit R. Patel, Neeraj Kumar Tiwari, Hiteshkumar L. Adalja, Shiv Kumar Goyal, Tinkal Ladiya, Nishant Singh, Sushil Kumar, Manoj K. Tiwari, M. H. Modi, Biswajit Mondal, Aveek Sarkar, Bhuwan Joshi, P. Janardhan, and Anil Bhardwaj

The formation of an atypical sunspot light bridge as a result of large-scale flux emergence

Date of Publication: 26/10/2020
Journal Impact Factor
Journal: Astrophysical Journal, 905, 153

Authors

Rohan E. Louis, Christian Beck, Debi P. Choudhary

Evidence of strong relationship between hemispheric asymmetry in solar coronal rotation and solar activity during solar cycle 24

Date of Publication: 22/10/2020
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society

Authors

Jaidev Sharma, Anil Malik, Brajesh Kumar, and Hari Om Vats

Solar X-Ray Monitor on Board the Chandrayaan-2 Orbiter: In-Flight Performance and Science Prospects

Date of Publication: 22/10/2020
Journal Impact Factor
Journal: Solar Physics

Authors

N. P. S. Mithun, Santosh V. Vadawale, Aveek Sarkar, M. Shanmugam, Arpit R. Patel, Biswajit Mondal, Bhuwan Joshi, P. Janardhan, Hiteshkumar L. Adalja, Shiv Kumar Goyal, Tinkal Ladiya, Neeraj Kumar Tiwari, Nishant Singh, Sushil Kumar, Manoj K. Tiwari, M. H. Modi, and Anil Bhardwaj

Sequential Lid Removal in a Triple-decker Chain of CME-producing Solar Eruptions

Date of Publication: 18/09/2020
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Navin Chandra Joshi, Alphonse C. Sterling, Ronald L. Moore, and Bhuwan Joshi

Eruptive–Impulsive Homologous M-class Flares Associated with Double-decker Flux Rope Configuration in Minisigmoid of NOAA 12673

Date of Publication: 27/08/2020
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Prabir K. Mitra, Bhuwan Joshi, Astrid M. Veronig, Ramesh Chandra, K. Dissauer, and Thomas Wiegelmann

Hard X-Ray Emission from an Activated Flux Rope and Subsequent Evolution of an Eruptive Long-duration Solar Flare

Date of Publication: 14/07/2020
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Suraj Sahu, Bhuwan Joshi, Prabir K. Mitra, Astrid Veronig, and V. Yurchyshyn

On the seismic emission in sunspots associated with Lorentz force changes accompanying major solar flares

Date of Publication: 08/07/2020
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, 497, 976

Authors

Hirdesh Kumar, and Brajesh Kumar

Fizeau Mask Interferometry of Solar Features Using the Multi-application Solar Telescope at the Udaipur Solar Observatory

Date of Publication: 08/07/2020
Journal Impact Factor
Journal: Solar physics

Authors

Raja Bayanna Ankala, Parameswaran Venkatakrishnan, Rengaswamy Sridharan, and Shibu K Mathew

Solar Radio Observation Using CALLISTO at the USO/PRL, Udaipur

Date of Publication: 16/06/2020
Journal Impact Factor
Journal: 2019 IEEE MTT-S International Microwave and RF Conference (IMARC)

Authors

Kushagra Upadhyay, Bhuwan Joshi, Prabir K. Mitra, Ramit Bhattacharyya, Divya Oberoi, Christian Monstein

Development of a Confined Circular-Cum-Parallel Ribbon Flare and Associated Pre-Flare Activity

Date of Publication: 08/06/2020
Journal Impact Factor
Journal: Solar Physics

Authors

Pooja Devi, Bhuwan Joshi, Ramesh Chandra, Prabir K. Mitra, Astrid M. Veronig, Reetika Joshi

Wave amplitude modulation in fan loops as observed by AIA/SDO

Date of Publication: 01/06/2020
Journal Impact Factor
Journal: A&A, 638, A6

Authors

Aishawnnya Sharma, D. Tripathi, R. Erdelyi, Girjesh R. Gupta and G. A. Ahmed

On the Spontaneous Generation of Three-dimensional Magnetic Nulls

Date of Publication: 25/03/2020
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Sushree S Nayak, R Bhattacharyya, P K Smolarkiewicz, Sanjay Kumar & A Prasad

Identification of Pre-flare Processes and Their Possible Role in Driving a Large-scale Flux Rope Eruption with Complex M-class Flare in the Active Region NOAA 12371

Date of Publication: 12/02/2020
Journal Impact Factor
Journal: Solar Physics, 295, 29

Authors

Prabir K. Mitra, Bhuwan Joshi, Avijeet Prasad

On the variation of solar coronal rotation using SDO/AIA observations

Date of Publication: 08/02/2020
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, 492, 5391

Authors

Jaidev Sharma, Brajesh Kumar, Anil K Malik and Hari Om Vats

An Observationally Constrained Analytical Model for Predicting the Magnetic Field Vectors of Interplanetary Coronal Mass Ejections at 1 au

Date of Publication: 10/01/2020
Journal Impact Factor
Journal: The Astrophysical Journal, 888:121

Authors

Ranadeep Sarkar, Nat Gopalswamy and Nandita Srivastava

A Hot Cusp-shaped Confined Solar Flare

Date of Publication: 17/12/2019
Journal Impact Factor
Journal: The Astrophysical Journal Letters

Authors

Aaron Hernandez-Perez, Su Yang, Julia K. Thalmann, Astrid M. Veronig, Ewan C. Dickson, Karin Dissauer, Bhuwan Joshi, Ramesh Chandra

Hinode EIS line widths in the quiet corona up to 1.5 Rsun

Date of Publication: 15/11/2019
Journal Impact Factor
Journal: A&A, 631, A163

Authors

G. Del Zanna, G. R. Gupta and H. E. Mason

Lorentz Force Evolution Reveals the Energy Build-up Processes during Recurrent Eruptive Solar Flares

Date of Publication: 30/10/2019
Journal Impact Factor
Journal: The Astrophysical Journal Letters 885:L17

Authors

Ranadeep Sarkar, Nandita Srivastava and Astrid Veronig

Preflare Processes, Flux Rope Activation, Large-scale Eruption, and Associated X-class Flare from the Active Region NOAA 11875

Date of Publication: 11/10/2019
Journal Impact Factor
Journal: The Astrophysical Journal, 884, 46

Authors

Prabir K. Mitra, Bhuwan Joshi

Investigation of a confined C-class flare in an arch filament system close to a regular sunspot

Date of Publication: 23/09/2019
Journal Impact Factor
Journal: Journal of Geophysical Research - Space Physics, 124, 8255

Authors

Rohan Eugene Louis

Solar Filament Eruptions as Precursors to Flare–CME Events: Establishing the Temporal Connection

Date of Publication: 29/07/2019
Journal Impact Factor
Journal: The Astrophysical Journal, 880:84 (12pp), 2019 August 1

Authors

Suvadip Sinha, Nandita Srivastava, and Dibyendu Nandy

Exploring the damping of Alfven waves along a long off-limb coronal loop, up to 1.4 Rsun

Date of Publication: 02/07/2019
Journal Impact Factor
Journal: A&A, 627, A62

Authors

G. R. Gupta, G. Del Zanna and H. E. Mason

Interplanetary Coronal Mass Ejections During Solar Cycles 23 and 24: Sun–Earth Propagation Characteristics and Consequences at the Near-Earth Region,

Date of Publication: 03/05/2019
Journal Impact Factor
Journal: Solar Physics

Authors

M. Syed Ibrahim, Bhuwan Joshi, K. S. Cho, R. S. Kim, Y. J. Moon

Mass loss via solar wind and coronal mass ejections during solar cycles 23 and 24

Date of Publication: 23/04/2019
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, Volume 486, Issue 4, July 2019, 4671–4685, https://doi.org/10.1093/mnras/stz1001

Authors

Wageesh Mishra, Nandita Srivastava, Yuming Wang, Zavkiddin Mirtoshev, Jie Zhang, Rui Liu

Evolution of Coronal Cavity from Quiescent to Eruptive Phase in Association with Coronal Mass Ejection

Date of Publication: 22/04/2019
Journal Impact Factor
Journal: The Astrophysical Journal, 875:101 (16pp), 2019 April 20

Authors

Ranadeep Sarkar, Nandita Srivastava, Marilena Mierla, Matthew J West, and Elke D'Huys

A Data-constrained Magnetohydrodynamic Simulation of Successive Events of Blowout Jet and C-class Flare in NOAA AR 12615

Date of Publication: 10/04/2019
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Sushree S. Nayak, R. Bhattacharyya, A. Prasad, Qiang Hu, Sanjay Kumar and B. Joshi

Pre-eruption Processes: Heating, Particle Acceleration, and the Formation of a Hot Channel before the 2012 October 20 M9.0 Limb Flare

Date of Publication: 01/04/2019
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Hernandez-Perez, Aaron, Su, Yang, Veronig, Astrid M., Thalmann, Julia, Gömöry, Peter, Joshi, Bhuwan

Generalization of the Magnetic Field Configuration of Typical and Atypical Confined Flares

Date of Publication: 29/01/2019
Journal Impact Factor
Journal: The Astrophysical Journal

Authors

Navin Chandra Joshi, Xiaoshuai Zhu, Brigitte Schmieder, Guillaume Aulanier, Miho Janvier, Bhuwan Joshi, Tetsuya Magara, Ramesh Chandra, Satoshi Inoue

Successive Flux Rope Eruptions from δ-sunspots Region of NOAA 12673 and Associated X-class Eruptive Flares on 2017 September 6,

Date of Publication: 10/12/2018
Journal Impact Factor
Journal: The Astrophysical Journal, 869, 69

Authors

Prabir K. Mitra, Bhuwan Joshi, Avijeet Prasad, Astrid M. Veronig, and R. Bhattacharyya

Study of reconnection rates and light curves in solar flares from low and mid chromosphere

Date of Publication: 24/10/2018
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, Volume 482, Issue 3, 3744–3756

Authors

G Sindhuja, Nandita Srivastava, A M Veronig, W Pötzi;

Dependence of Coronal Mass Ejection Properties on Their Solar Source Active Region Characteristics and Associated Flare Reconnection Flux

Date of Publication: 17/09/2018
Journal Impact Factor
Journal: The Astrophysical Journal, Volume 865, Issue 1, article id. 4, pp. , (2018)

Authors

Sanchita Pal, Dibyendu Nandy, Nandita Srivastava, Nat Gopalswamy and Suman Panda

Observations of Two Successive EUV Waves and Their Mode Conversion,

Date of Publication: 10/08/2018
Journal Impact Factor
Journal: The Astrophysical Journal, 863, 101

Authors

Ramesh Chandra, P. F. Chen, Reetika Joshi, Bhuwan Joshi, and Brigitte Schmieder

A Major Geoeffective CME from NOAA 12371: Initiation, CME-CME Interactions, and Interplanetary Consequences,

Date of Publication: 20/07/2018
Journal Impact Factor
Journal: Solar Phys, 293, 107

Authors

Bhuwan Joshi, M. Syed Ibrahim, A. Shanmugaraju, and D. Chakrabarty

Simulated evolution of three-dimensional magnetic nulls leading to generation of cylindrically-shaped current sheets

Date of Publication: 16/06/2018
Journal Impact Factor
Journal: Physics of Plasmas 23, 044501 (2017)

Authors

Sanjay Kumar and R. Bhattacharyya

A Magnetohydrodynamic Simulation of Magnetic Null-point Reconnections in NOAA AR 12192, Initiated with an Extrapolated Non-force-free Field

Date of Publication: 15/06/2018
Journal Impact Factor
Journal: Astrophysical Journal

Authors

A Prasad, R Bhattacharyya, Qiang Hu, Sanjay Kumar, Sushree S Nayak

Editorial: Earth-affecting Solar Transients

Date of Publication: 09/05/2018
Journal Impact Factor
Journal: Solar Physics (2018), 293: 80

Authors

Jie Zhang, Xochitl Blanco-Cano, Nariaki Nitta, Nandita Srivastava and Cristina H. Mandrini

A Comparative Study of the Eruptive and Non-eruptive Flares Produced by the Largest Active Region of Solar Cycle 24

Date of Publication: 17/01/2018
Journal Impact Factor
Journal: Solar Physics (2018), 293: 16

Authors

Ranadeep Sarkar and Nandita Srivastava

Interplanetary and Geomagnetic Consequences of Interacting CMEs of 13 – 14 June 2012

Date of Publication: 03/01/2018
Journal Impact Factor
Journal: Solar Physics (2018), 293: 5

Authors

Nandita Srivastava, Wageesh Mishra and D. Chakrabarty

Observational and Model Analysis of a Two-ribbon Flare Possibly Induced by a Neighboring Blowout Jet,

Date of Publication: 10/12/2017
Journal Impact Factor
Journal: The Astrophysical Journal, 851, 29

Authors

Bhuwan Joshi, Julia K. Thalmann, Prabir K. Mitra, Ramesh Chandra, and Astrid M. Veronig

Science objectives of the magnetic field experiment onboard Aditya-L1 spacecraft

Date of Publication: 16/11/2017
Journal Impact Factor
Journal: Advances in Space Research 10.1016/j.asr.2017.11.008

Authors

Vipin K.Yadav, Nandita Srivastava, S.S.Ghosh, P.T. Srikar, Krishnamoorthy Subhalakshmi

Trigger of Successive Filament Eruptions Observed by SDO and STEREO,

Date of Publication: 02/10/2017
Journal Impact Factor
Journal: Solar Phys (2017) 292, 145

Authors

Sajal Kumar Dhara, Ravindra Belur, Pankaj Kumar, Ravinder Kumar Banyal, Shibu K. Mathew, Bhuwan Joshi

Visible Emission Line Coronagraph on Aditya-L1

Date of Publication: 25/08/2017
Journal Impact Factor
Journal: Current Science,Vol.113 No.4

Authors

Raghavendra Prasad B., Banerjee Dipankar, Singh Jagdev, Nagabhushana S., Kumar Amit, Kamath P. U., Kathiravan S., Venkata Suresh, Rajkumar N., Natarajan V., Juneja Madhur, Somu Pawan, Pant Vaibhav, Shaji Nigar, Sankarsubramanian K., Patra Asit, Venkateswaran R., Adoni Abhijit Avinash, Narendra S., Haridas T. R., Mathew Shibu K., Mohan Krishna R., Amareswari K., Jaiswal Bhavesh

Probing the heliosphere using in situ payloads on-board Aditya-L1

Date of Publication: 25/08/2017
Journal Impact Factor
Journal: Current Science,Vol.113 No.4

Authors

Janardhan P., Vadawale Santosh, Bapat Bhas, Subramanian K. P., Chakrabarty D., Kumar Prashant, Sarkar Aveek, Srivastava Nandita, Satheesh Thampi R., Yadav Vipin K., Dhanya M. B., Nampoothiri Govind G., Abhishek J. K., Bhardwaj Anil, Subhalakshmi K.

X-ray spectrometers on-board Aditya-L1 for solar flare studies

Date of Publication: 25/08/2017
Journal Impact Factor
Journal: Current Science,Vol.113 No.4

Authors

Sankarasubramanian K., Sudhakar Manju, Nandi Anuj, Ramadevi M. C., Adoni Abhijit Avinash, Kushwaha Ankur, Agarwal Anil, Dey Arjun, Joshi Bhuwan, Singh Brajpal, Girish V., Tomar Ishan, Majhi Kamal Kumar, Olekar Manjunath, Bug Monoj, Pala Manohar,Thakur Mukund Kumar, Badagandi Rajeev R., Ravishankar B. T., Garg Sarthak, Sitaramamurthy N., Sridhara N., Umapathy C. N., Gupta Vinod Kumar, Agrawal Vivek Kumar, Yougandar B.

The Multi Application Solar Telescope

Date of Publication: 25/08/2017
Journal Impact Factor
Journal: Current Science,Vol.113 No.4

Authors

Venkatakrishnan P., Mathew Shibu K., Srivastava Nandita, Bayanna A. R., Kumar Brajesh, Ramya Bireddy, Jain Naresh, Saradava Mukesh

Assessing the Nature of Collisions of Coronal Mass Ejections in the Inner Heliosphere

Date of Publication: 24/08/2017
Journal Impact Factor
Journal: THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, Volume 232, Number 1

Authors

Wageesh Mishra, Yuming Wang, Nandita Srivastava, Chenglong Shen

Chaotic magnetic field lines and spontaneous development of current sheets

Date of Publication: 08/08/2017
Journal Impact Factor
Journal: Physics of Plasmas, 24, 082902 (2017)

Authors

Sanjay Kumar, R. Bhattacharyya, B. Dasgupta and M. S. Janaki

SPIN: An Inversion Code for the Photospheric Spectral Line

Date of Publication: 03/08/2017
Journal Impact Factor
Journal: Solar Phys (2017) 292:105

Authors

Rahul Yadav, Shibu. K. Mathew and Alok R. Tiwary

First Observations from the Multi-Application Solar Telescope (MAST) Narrow-Band Imager

Date of Publication: 03/08/2017
Journal Impact Factor
Journal: Solar Physics, 292:106, (2017)

Authors

Shibu K. Mathew, Ankala Raja Bayanna, Alok Ranjan Tiwary, Ramya Bireddy, P. Venkatakrishnan

On the signatures of flare-induced global waves in the Sun: GOLF and VIRGO observations

Date of Publication: 02/08/2017
Journal Impact Factor
Journal: Monthly Notices of the Royal Astronomical Society, DOI: 10.1093/mnras/stx1953