- Estimation of
Solar Wind Velocity From the Three-Station IPS Observatory -
India.
Janardhan, P.
(Published in the Proc.
of the Indo-U.S. Workshop on IPS and Solar Activity - Feb. 1988, pp. 83,
Ahmedabad).
- Enhanced
Scintillation of Radio Source 2204+29 by Comet Austin (1989 c1) at 103
MHz.
Janardhan, P., Alurkar, S.K.,Bobra, A.D. and Slee, O.B.
(Presented at the 14th Meeting
of the Astronomical Society of India - Jan. 29 to Feb. 1, 1991, PRL,
Ahmedabad, India).
- A Summary of
Radio Observations of Enhanced Scintillations Due to Cometary Ion Tails
at 103 MHz.
Janardhan, P.
(Presented at the
Indo-U.S. Workshop on Interplanetary Scintillation and Propagating
Disturbances, Ahmedabad, India, Sept. 1991).
- Possible
Contribution of a Solar Transient to Enhanced Scintillation Due to a
Quasar.
Janardhan, P. and Alurkar, S.K.
(Presented at the
Symposium on Solar Connection with Transient Interplanetary Processes
(SOLTIP). Sept. 30 to Oct. 5, 1991, Liblice, Czechoslovakia).
- Interplanetary
Scintillations - Recent Results.
Janardhan, P.
(Invited Talk - Presented
at the National Space Science Symposium (NSSS), March 11−14 1992 at the
Physical Research Laboratory, Ahmedabad, India).
- A 327 MHz
Interplanetary Scintillation Survey of Radio Sources Over 6 steradian.
V. Balasubramanian, P.
Janardhan and S. Ananthakrishnan.
(Presented at the 6th Asia
Pacific Regional Meeting on Astronomy, 16−18 August, 1993, Pune).
- Unique
Observations of PSR 0950+08 and Possible Terrestrial Effects.
M.R. Deshpande, H.O. Vats, P. Janardhan, A.D.
Bobra, Harish Chandra, and G.D.Vyas.
(Presented at the 6th Asia
Pacific Regional Meeting on Astronomy, 16-18 August, 1993, Pune).
- Latitudinal
Variation of Solar Wind Velocity.
Ananthakrishnan, S., Balasubramanian, V.,
and Janardhan, P.
(Presented at the 28th
ESLAB Symposium " The High Latitude Heliosphere", April, 19−21
1994, Friedrichshafen, Germany).
- IPS
Observations of the Solar Wind at 327 MHz - A Comparison With Ulysses
Observations.
Janardhan, P., Balasubramanian, V., Ananthakrishnan, S., and
Srivatsan, R.
(Presented at the XVII
Annual Meeting of the Astronomical Society of India, January, 17−20,
1996).
- On the Nature
of Compact Components of Radio Sources at 327 MHz.
Balasubramanian, V., Janardhan,
P., Ananthakrishnan, S. and Srivatsan, R.
(Presented at the XVII
Annual Meeting of the Astronomical Society of India, January, 17−20,
1996).
- Radio
Observations of Transient Solar Wind Flows.
Balasubramanian, V., Janardhan,
P., Srivatsan, R. and Ananthakrishnan, S.
(Presented at the third
SOLTIP meeting 14−18 October, 1996, Beijing, China).
- Measurements of
Solar Wind Velocities Close to the Sun Using Ulysses Radio Sounding
Data.
Janardhan, P., Bird, M. K., Edenhofer, P, Plettemeier, D., Wohlmuth,
R., Asmar, S W., Patzö lt, M. and Karl, J.
(Presented at the XXII
General Assembly of the European Geophysical Society, Vienna 21−25 April
1997).
- Coronal
Velocity Measurements with Ulysses: Multi-link Correlation Studies
During two Superior Conjunctions.
Janardhan, P., Bird, M. K., Edenhofer, P, Plettemeier, D., Wohlmuth,
R., Asmar, S W., Patzö lt, M. and Karl, J.
(Presented at the 8th
Scientific Assembly of IAGA, Uppsala, Sweden August 4−15, 1997).
- K-Band Radio Observations of
Comet Hale-Bopp: Detections of Ammonia and (Possibly) Water
Bird, M. K., Janardhan,
P., Wilson, T. L., Huchtmeier, W.K., Gensheimer,
P., and Lemme, C.
(Presented at the First
International Conference on Hale-Bopp, Puerto de la Cruz, Tenerife,
Spain, 2-6 February 1998).
- Probing the Interplanetary
Medium from the Ground.
Janardhan, P.
(Colloquium presented at
the Australia Telescope National Facility (ATNF), Sydney, Australia,
February, 11 1998).
- Cross Correlation
Measurements of Coronal Outflow Velocities During Two Solar Conjunctions
of the Ulysses Spacecraft.
Janardhan, P., Bird, M. K., Edenhofer, P, Plettemeier, D., Wohlmuth,
R., Asmar, S W., Patzö lt, M. and Karl, J.
(Presented at the 32nd
COSPAR Scientific Assembly, Nagoya, Japan, July, 12−19 1998).
- Anisotropic Structure of the
Solar Wind in its Region of Acceleration.
Efimov, A.I., Rudash, V.K., Bird, M.K., Janardhan, P. , Patzö
lt, M., Karl, J., Edenhofer, P. and Wohlmuth, R.
(Presented at the 32nd
COSPAR Scientific Assembly, Nagoya, Japan, July, 12−19 1998).
- Studying ``Space Weather''
from the Ground.
Janardhan, P.
(Presented at the IV SERC
school on Electromagnetic Probing of the Upper Atmosphere, Physical
Research Laboratory, Ahmedabad, India, April, 6−29 1998).
- The Ulysses Solar Corona
Experiment: Coronal Radio Sounding Observations During the Solar
Conjunctions in 1992 and 1995.
Bird, M.K., Asmar, S W., Edenhofer, P., Janardhan, P ., Karl,
J., Patzö lt, M., Plettemeier, D., Volland, H., and Wohlmuth, R.
(Presented at the Solar
Wind 9, Nantucket Island, Massachusetts, USA, October 5−9, 1998).
- Study of Solar Wind
Transients Using IPS.
Ananthakrishnan, S., Kojima, M., Tokumaru, M., Balasubramanian,
S., Janardhan, P., Manoharan, P.K., and Dryer, M.
(Presented at the Solar
Wind 9, Nantucket Island, Massachusetts, USA, October 5−9, 1998).
- Studying Solar Generated
Heliospheric Disturbances using Interplanetary Scintillation
Observations.
Janardhan, P.
(Invited Talk - Presented
at the XIX Meeting of the Astronomical Society of India, February 1-4,
1999, RRI, Bangalore, India).
- 327 MHz Interplanetary
Scintillation Observations during the Whole Sun Month - II Campaign.
P. Janardhan., V. Balasubramanian, S. Ananthakrishnan, M. Tokumaru
and M. Dryer
(Presented at the Solar
Heliospheric and Interplanetary Environment (SHINE99) Workshop, Boulder,
Colorado, USA, June 14−17, 1999).
- Observations of
Interplanetary Scintillation during the 1998 Whole Sun Month: a
comparison between EISCAT, ORT and Nagoya data.
Moran, P.J., A.R. Breen, A. Canals, R.A.
Fallows, P.J.S. Williams, P. Janardhan., M. Tokumaru, J.
Markkanen
(Presented at the 9th
EISCAT International Workshop, Wernigerode/Harz, Germany, September 6−10
1999).
- Observations of
Interplanetary Scintillation during the 1998 Whole Sun Month: a
comparison between EISCAT, ORT and Nagoya data.
Moran, P.J., Ananthakrishnan, S.,
Balasubramanian, V., Breen, A.R., Canals, A., R.A. Fallows, P. Janardhan., Tokumaru,
M., and Williams, P.J.S.
(Presented at the XXV General
Assembly of the European Geophysical Society, Nice, France, April 2000).
- Radio Detection of a Rapid
Disturbance Launched by a Solar Flare.
Janardhan P., White, S.M., and Kundu, M.R.
(Presented at the
International Conference on Solar Eruptive Events, March 6−9, 2000,
Catholic University of America, Washington, DC, USA).
- The Role of IPS Technique in
Detection and Tracking of Interplanetary Transients and its Application
to Short Term Forecasts of Space Weather
Balasubramanian, V., Ananthakrishnan, S., Janardhan, P . and
Dryer, M.
(Presented at the Chapman
Conference on Space Weather: Progress and Challenges in Research and
Applications. March 20-24, 2000).
- Subsidence of Solar Wind Over
a Large Part of the Inner Heliosphere Monitored by IPS During 3 - 16 May
1999.
Balasubramanian, V., Ananthakrishnan, S., Janardhan, P . and
Srinivasan, S.
(Presented at the ISTP
Science Workshop - Goddard Space Flight Centre, Maryland, USA, March
27-30, 2000 at the special session on "The Day the Solar Wind Went
Away").
- A Comparitive Study of
Scintillation Data from EISCAT, ORT and Nagoya during the 1998 and 1999
Whole Sun Months.
P.J. Moran, S. Ananthakrishnan, S. Balasubramanium, A.R. Breen, A.
Canals, R.A. Fallows, P.
Janardhan, M. Tokumaru and P.J.S. Williams.
(Presented at the European
Geophysical Society XXV General Assembly, Nice, April 25-29 200).
- An Extremely Rapid Solar
Flare Associated Disturbance Observed at 333 MHz.
Janardhan, P., White, S.M., and Kundu, M.R.
(Presented at the Solar
Physics Division (SP Annual Meeting, Lake Tahoe, USA, June 19-22, 2000).
- Living With a Star - The Sun.
Janardhan, P.
(Invited Talk - Presented
at the Workshop on Meteors, Astroids and Planets, PRL, Ahmedabad, India,
February 26-March 2, 2001).
- Subsidence of Solar Wind Over
a Large Part of the Inner Heliosphere Monitored by IPS During 3− 16 May
1999.
Janardhan, P.
(Presented at the
Conference on "Probing the Sun with High Resolution" Udaipur
Solar Observatory, PRL, Udaipur, India, October 16−12, 2001).
- Understanding the Sun-Earth
Connection.
Janardhan, P.
(Invited Talk - Presented
at the XII National Space Science Symposium, Barkatulla University,
Bhopal, India, February 25-28, 2002).
- Interplanetary Scintillation
Observations of the Large-Scale Solar Wind Subsidence Event of May 1999.
Janardhan, P., Balasubramanian, V., and Ananthakrishnan, S.
(Presented at the First
STEREO Workshop "The 3-D Sun and Inner Heliosphere: The STEREO
View" Paris, March 18−20, 2002).
- Fine Structure of the Solar
Wind Turbulence Inferred from Simultaneous Radio Occultation Observations
at Widely-Spaced Ground Stations.
Bird, M.K., Janardhan, P., Efimov, A.I., Samoznaev, L.N., Andreev, V.E., Chashei,
I.V., Edenhofer, P., Plettemeier, D., and Wohlmuth, R.
(Presented at the Solar
Wind 10 Conference, Pisa, Italy, 17−21 June 2002).
- Remote Sensing Interplanetary
Disturbances.
Janardhan, P.
(Invited Talk - Presented
at the Workshop on "Radio and Optical probing of the Upper
Atmosphere", PRL, Ahmedabad, India, February 6−8, 2003).
- IPS Observations with the
Ooty Radio Telescope
Janardhan, P.
(Invited Talk - Presented
at the Symposium Entitled "ORT: Past Present and Future",
Radio Astronomy Centre, Ooty, April 17−19 2003).
- Magnetic Solar Cycle Related
Heliospheric Density Anomalies
Ananthakrishnan, S., Janardhan,
P and Balasubramanian, V.
(Presented at the IAU
General Assembly, Sydney, Australia, July 2003).
- Radio Observations of Rapid
Acceleration in a Slow Filament Eruption/Fast CME Event.
Kundu, M.R., White, S.M., Garaimov, V.I.,
Manoharan, P.K., Prasad Subramanian, Ananthakrishnan, S., and Janardhan, P.
(Presented at the fall
meeting of the AGU, 2003).
- Enigmatic Solar Wind
Disappearance Events: Insights from IPS Observations
Janardhan, P. .
(Invited Talk -Presented
at the Conference on "Sun Earth Connections: Multiscale Coupling of
Sun-Earth Processes", Hawaii, USA, Feb. 9−13 2004).
- Resolving the Enigmatic Solar
Wind Disappearance Event of 11 May 1999.
Janardhan, P.
(Invited Talk - Presented
at the First Asia Oceanic Geophysical Society (AOGS Meeting, Singapore,
July 5−9 2004).
- Meterwave Observations of the
Solar Corona with the Giant Meterwave Radio Telescope (GMR and the
Nancay Radio Heliograph (NRH).
Prasad Subramanian, Claude Mercier, Alain
Kerdraon, Monique Pick, S. Ananthakrishnan and Janardhan, P.
(Presented at the XXVIII
General Assembly of the International Union of Radio Science (URS, New
Delhi, India, Oct. 23−29, 2005).
- Locating the solar source of
the extremely low-density, low-velocity solar wind flows of 11 May 1999
Janardhan, P., Fujiki,K., Kojima, M. and Tokumaru, M.
(Invited Talk - Presented at the ''ILWS Workshop - The
Solar Influence on the Heliosphere and Earth's Environment: Recent
Progress and Prospects" Goa, India, Feb. 19−24, 2006).
- Low Density Solar Wind
Anomalies.
Janardhan, P.
(Invited Talk - Presented at the International
Colloquium "Scattering and Scintillation in Radio Astronomy",
19−23 June 2006, Pushchino, Moscow, Russia).
- Electron acceleration in
solar noise storms
Prasad Subramanian, Peter A. Becker, Claude
Mercier, Steve White, Alain Kerdraon, Monique Pick, S.
Ananthakrishnan, P.
Janardhan
(Presented at the second
UN/NASA workshop on the International Heliophysical Year and basic Space
Science , IIAP, Bngalore Nov. 27−Dec. 1 2006).
- Solar observations during
solar minima with Brazilian Decimetric Array.
J.F. Valle, R. Ramesh, P.
Janardhan , J. R. Cecatto and H. S. Sawant.
(Presented at the Eighth
Latin American Conference on Space Geophysics (VIII -COLAG Mexico, July
17−21, 2007).
- Studies of Long Lasting Low
Density Solar Wind Anomalies at 1 AU.
P. Janardhan, J. F. Valle and H. S. Sawant
(Presented at the Eighth
Latin American Conference on Space Geophysics (VIII -COLAG Mexico, July
17−21, 2007 ).
- The Solar Wind Disappearance
Event of 11 May 1999: Source Region Evolution.
Mason, H.E., Janardhan, P., and
Tripathi, D.
( Presented at the
National Astronomy meeting of the Royal Astronomical Society, 31
March−04 April 2008, Queens University Belfast, UK).
- Source Region Evolution of
the Solar Wind Disappearance Event of 11 May 1999
Janardhan, P., Tripathi, D. & Mason, H.E.
( Presented at the
European Solar Physics Meeting (ESPM12), 8−12 September 2008, Freiburg,
Germany).
- The Global Electromagnetic
Moon Surveyor.
S. Ananthakrishnan, J. E. S. Bergman, L. Blomberg, F. Bruhn, T. D.
Carozzi, L. K. S. Daldorff, A. I. Eriksson, S. Gurubaran, N.
Ivchenko, P. Janardhan, P. Kale, V. Korepanov, J. Lazio, H. Lundstedt, A.
Marusenkov, S. M. Mohammadi, H. Rothkaehl, B. Thidé, J.-E. Wahlund, K.
Weiler, and L. Åhlén.
( Presented at the
DGLR International Symposium “To Moon and beyond", 15−17 September,
2008, Bremen, Germany).
- When the Solar Wind Vanishes:
Causes on the Sun, Effects at the Earth.
Janardhan, P. .
(Invited Talk -Presented
at the 27th ASI Meeting, February 18 − 20, 2009, Bangalore, India. ).
- The Deepest Solar Minimum in
100 Years: Earliest Inner Heliospheric Signatures
Janardhan, P. .
(Invited Talk -Presented
IUCAA, Pune, Sept. 4−7 2011 ).
- Declining solar activity in
solar cycles 22 and 23 and their inner heliospheric signatures
Janardhan,P., (2012).
( Presented at the
39th COSPAR meeting, July 14-22, 2012, Mysore, India ).
- Quasi-periodic variations in
solar photospheric fields in the build-up to the deep minimum between
solar cycles 23 and 24.
Janardhan,P., (2012).
( Presented at the
International Symposium on Solar Terrestrial Physics, November 6-9,
2012, IUCAA, Pune, India).
- Earliest Solar and
Heliospheric Signatures of the Build-up to the Deepest Solar Minimum in
100 years
Janardhan,P., (2012).
( Presented at
Workshop on Coronal Magnetism - Connecting Models to Data and the Corona
to the Earth", May 2012, Boulder, CO, USA.)
- Extremely low density solar
wind events observed at 1 AU and their space weather consequences.
Janardhan, P. .
(Invited Talk -Presented
at the High Altitude Observatory, Boulder, Colorado, USA, 31 May
2012 ).
- Peculiar behavior of solar
polar fields during solar cycles 21-23: Correlation with meridional flow
speed
Susanta Kumar Bisoi, Janardhan,P., (2013). Proc. IAU Symp.
294, 8, 81−82
(DOI) 10.1017/S1743921313002287.
( Presented at the
IAU Symposium 294“Solar and Astrophysical Dynamos and Magnetic
Activity", August, 2012, Beijing, China).
- Asymmetry in the
periodicities of solar photospheric fields: A probe to the unusual solar
minimum prior to cycle 24
Susanta Kumar Bisoi, Janardhan,P., (2013). Proc. IAU Symp.
294, 8, 85−86
(DOI) 10.1017/S1743921313002305.
( Presented at the
IAU Symposium 294“Solar and Astrophysical Dynamos and Magnetic
Activity", August, 2012, Beijing, China).
- Interplanetary scintillation
signatures in the inner heliosphere of the deepest solar minimum in the
past 100 years
Susanta Kumar Bisoi, Janardhan,P., (2013). Proc. IAU Symp.
294, 8, 83−84
(DOI) 10.1017/S1743921313002299.
( Presented at the
IAU Symposium 294“Solar and Astrophysical Dynamos and Magnetic
Activity", August, 2012, Beijing, China).
- Observations of a geomagnetic
SI+−SI- pair and associated solar wind
fluctuations
Susanta Kumar Bisoi, Janardhan,P., (2013). Proc. IAU Symp. 294,
8, 543−544 (DOI)
10.1017/S1743921313003141. ( Presented at
the IAU Symposium 294“Solar and Astrophysical Dynamos and Magnetic Activity", August, 2012,
Beijing, China).
- The deepest solar minima in
100 years : Heliospheric micro-turbulence levels from 327 MHz IPS
observations and periodicities in solar photospheric fields
Janardhan,P.,Susanta Kumar Bisoi, Chakrabarti, D.and Ananthakrishnan,
S. (2013).
( Presented at the
Asia-Pacific regional URSI conference, Taipei, Taiwan, September 3−7, 2013 ).
- Steady decline in solar polar magnetic fields and
heliospheric microturbulence levels: Are we headed towards a Maunder
minimum?
Susanta Kumar Bisoi Janardhan, P.
and S. Ananthakrishnan, (2014).
(Presented at the 40th
General Assembly, Beijing, China, August 16−23, 2014 )
- Declining Solar Polar Fields
and Heliospheric Micro-turbulence: Are we Heading Towards Another
Maunder Minimum?
Janardhan, P. (Invited talk – Presented at the conference on Plasma Processes in
Solar and Space Plasmas at Diverse Spatio-Temporal Scales: Upcoming
Challenges in Science and Instrumentation, 26-28 Mar. 2014)
- Are we on the verge of a
Maunder –Like Grand Solar Minimum
Janardhan, P. (Invited talk - Presented at the CSPM 2015 – “Ground Based Solar
Observations in the Space Instrumentation Era” - Coimbra, Portugal, 5-9,
October 2015.”
- A 20 year decline in solar
magnetic fields – heliospheric response and possible consequences?
Janardhan, P. (Invited Talk – Presented at
the conference on “New Paradigms for the Heliosphere'', Physikzentrum Bad Honnef, Germany,
29 June - 03 July 2015.
- Are we on the verge of a
Maunder –Like Grand Solar Minimum
Janardhan, P. (Invited Colloquium - - MPIFR – Bonn, Germany, 26 June 2015)
- Declining Solar Polar Fields
and their Signatures in the Solar Wind: Implications to near Earth Space
Janardhan, P. (Invited talk -
1st URSI Atlantic Radio Science Conference (URSI AT-RASC), Gran Canaria, May 18 - 22, 2015)
- Declining Solar
Photospheric Magnetic fields and Solar wind Micro-turbulence
Janardhan, P. (Invited talk
- Presented at the Dynamic Sun: II. Solar Magnetism from Interior to the Corona, Cambodia, Feb 12-16, 2018).
- Solar Activity - Past, Present and Near Future
Janardhan P
(
Invited Talk -Presented at the ISRO Structured
Training Program (STP) in Space Sciences – PRL, March 5--9, 2018).
- The Sun-Earth Connection
Janardhan P
(
Plenary Talk - Presented at the National Symposium
on "Advancements in Geospatial Technology for Societal Benifits", Space Application Centre,
Ahmedabad, 5--7 December 2018).
- Beyond the Mini Solar Maximum of Cycle 24: The
Amplitude of Solar Cycle 25 and the Evolution of the Terrestrial Magnetosphere
Janardhan P
(
Invited Talk -Presented at the National Space
Science Symposium, Savitri Bhai Phule University, Pune, 29-31, January 2019).
- Solar Polar Fields During Cycle 24: An Unusual
Polar Field Reversal.
Janardhan P
and Susanta Kumar Bisoi
(
Presented at the URSI Asia Pacific Radio Science
Conference 2019, (APRASC 2019) New Delhi, 9-15, March 2019).
- High Resolution Imaging of Coronal Type III Bursts:
First MUSER Solar Radio Observations.
Susanta Kumar Bisoi, and
Janardhan P
(
Presented at the URSI Asia Pacific Radio Science
Conference 2019, (APRASC 2019) New Delhi, 9-15, March 2019).
- A Decimetric Emission Source 500'' away from a
Flaring Site.
Susanta Kumar Bisoi, and
Janardhan P
(
Presented at the URSI Asia Pacific Radio Science
Conference 2019, (APRASC 2019) New Delhi, 9-15, March 2019).
- Declining solar polar fields, the terrestrial
magnetosphere and the forthcoming solar cycle
Janardhan P
(
Invited talk - Presented at the workshop
on International Space Weather Initiative (ISWI) in collaboration with the United Nations
Office of Outer Space Affairs during May 20-24, 2019).
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