CONFERENCES ORGANIZED:

• PCPV 2013: An ICTS program on a School and Workshop as convener at Mahabaleswar, Maharashtra, India (February 2013).
• EFPAS 2015 Conference as convener at PRL, Ahmedebad, India (May 2015).
• NCAMP XXI Conference as an organizing member at PRL, Ahmedebad, India (January 2017).
• NIFE Conference as an organizing member at Udaipur, India (September 2017).

SEMINAR TALKS IN INDIA:

• Young Astronomers  Meeting, IUCAA, Pune,  February (2002).
• School on Distributed Parallel  Computer  Programming  (DPCP-02), Harish Chandra Research Institute, Allahabad,  April (2002) (volunteer  talk).
• Department of Physical Chemistry,  IACS, Kolkata,  October (2002).
• SERC school on ”Precision  Spectroscopy  of Atoms,  Molecules and  Bose
  Condensates”,  IISc, Bangalore,  February  (2003) (volunteer  talk).
•  Colloquium at Indian  Institute of Astrophysics,  Bangalore  (September, 2005).
• Best thesis award talk at XVI National  Conference on Atomic and Molecular Physics (8-11 Jan),  TIFR,  Bombay, January  (2007).
• IISER, Kolkata,  March (2009).
• Raman Center for Atomic, Molecular and Atomic Physics, IACS, Kolkata, March (2009).
• Atomic and Nuclear physics, TIFR,  Bombay, March (2009).
• Theoretical  Physics Division, PRL,  Ahmedabad,  April (2009).
• IISER, Bhopal, April (2009).
• Department of Physical Sciences, JNU, April (2009).
• International Conference  on  Cold  Atoms  and  Ions  2010 (ICCIA10), Kolkata, January  (2010).
• Colloquium, Physical Research Laboratory,  Ahmedabad, August (2010).
• Invited talk at 2nd DAE-BRNS Symposium on Atomic, Molecular and Optical Physics (SAMPO-2011) held at Karnatak University, Dharward, India, February 2011.
• Colloquium for Young Physicists (YPC 2011) held at Saha Institute of Nuclear Physics, Kolakata, India (August 2011).
• Invited talk at the ISAMP topical conference on "Laser interactions with atoms, molecules and cluster (TC2012)" held at Hyderabad Central University, Hyderabad, India, January 2012.
• Invited talk at National Conference on "Advances in Physics" held at IIT Roorkee, India, February 2012.
• Invited talk at Indo-UK Scientific Seminar (IUSS) held at NISER, Bhubaneswar, India, March 2012.
• Keynote speaker for 3rd International Conference on Meta Computing (ICoMeC 2012), May Fair hotel, Bhubaneswar, India, December 2012.
• Invited talk at 3rd DAE-BRNS Symposium on Atomic, Molecular and Optical Physics (AMPO 2012) held at IISER, Kolkata, India, December 2012.
• Invited talk at the LET's LOVE PHYSICS held at Narmad South Gujarat University, Surat, India, September 2013.
• Invited talk at the Topical Conference on Atomic Processes in Plasmas (ISAMP-TC 2013) held at IPR, Gandhunagar, India, November 2013.
• Invited talk at SPARC 2014 meeting held at TIFR, Bombay (2014).
• Invited talk at INSPIRE Science Camp for School Children held Borada University, Vadodora, Gujarat, India, July (2014).
• Annual Day Discussion Days, PRL, Ahmedabad (September 2014).
• Annual Day Discussion Days, PRL, Ahmedabad (September 2015).
• Invited lecture at the UGC Sponsored Skill Based Workshop on "Computational Methods and Applications in Physics" at the Department of Physics, Utkal University, Bhubaneswar, India, 5-6 November (2015).
• Seminar at Department of Physics, Revenshaw University, Cuttack, India, 5 November (2015).
• International Year of Light and 100 Years of Theory of Relativity meeting held during 19-20 January, 2016 at Kadi Sarva Vishwavidyalaya, Gandhinagar, India (2016).
• Frontiers in Atomic, Molecular and Optical Sciences (FAMOS 2016) workshop held during 19-20 February, 2016 at IACS, Kolkata, India (2016).
• NCAMP XXI Conference PRL, Ahmedebad, India (January 2017).

SEMINAR TALKS ABROAD:

• Atomphysik, Mainz University, Mainz, Germany, May (2003).
• Atomphysik, GSI, Darmstadt, Germany, May (2003).
• Theoretical Chemistry Dept., Heidelberg, Germany, May (2003).
• KVI, Groningen, The Netherlands, May (2003).
• Atomphysik, Humboldt Unversity, Berlin, Germany, April (2005).
• Laboratori Nazionali di Lignaro, Padova, Italy, July (2005).
• INFN, Sezione di Ferrara, Ferrara, Italy, July (2005).
• BEC Group, INFM, Trento, Italy, November (2005).
• MPI for Physics of Complex Systems, Dresden, Germany, December (2005).
• Doktorandenseminar, GSI, Darmstadt, Germany, January (2006).
• Atomfysik, Stockholm university, Stockholm, Sweden, January (2006).
• Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary, August (2006).
• Finite system group seminar, Max-Planck Institute for the Physics of Complex Systems, Dresden, Germany, September (2006).
• JAM session talk, Max-Planck Institute for the Physics of Complex Sys- tems, Dresden, Germany, October (2006).
• Electron Correlations group talk, Max-Planck Institute for the Physics of Complex Systems, Dresden, Germany, October (2006).
• DPG meeting on atomic physics, Düsseldorf, Germany, March (2007).
• KVI, Groningen, the Netherlands, March (2007).
• SPARC Working Group Meeting, GSI, Darmstadt, Germany, July (2007).
• Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary, February (2008).
• Workshop on ”Atomic, Chemical, and Nuclear Developments in Coupled Cluster Methods (INT-08-2a)”, INT, University of Washington, Seattle, USA, July (2008).
• 434. Wilhelm und Else Heraeus-Seminar ”Precision Experiments at Lowest Energies for Fundamental Tests and Constants”, Physikzentrum Bad Honnef, Germany, June (2009).
• VIII International Workshop on ”APPLICATION OF LASERS AND STORAGE DEVICES IN ATOMIC NUCLEI RESEARCH: Recent Achieve- ments and Future Prospects”, Poznan, Poland, June (2009).
• Department of Atomic and Molecular Physics, Harbin Institute of Technology, Harbin, China, September (2009).
• Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China, September (2009).
• Laboratory of Optical Physics, National Laboratory of Condensed Matter Physics, Chinese Academy of Sciences, Beijing, China, September (2009).
• Engineering College of Chemistry and Molecular Physics, Peiking University, Beijing, China, September (2009).
• Theoretical Physics group seminars, KVI, University of Groningen, The Netherlands, June (2010).
• Invited talk at Workshop on "Violations of discrete Symmetries in Atoms and Nuclei" held at ECT*, Trento, Italy (November 2010).
• Engineering College of Chemistry and Molecular Physics, Peiking University, Beijing, China, December (2011).
• Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China, December (2011).
• Laboratory of Optical Physics, National Laboratory of Condensed Matter Physics, Chinese Academy of Sciences, Beijing, China, December (2011).
• Invited talk at FPUA 2014 meeting held at Tokyo, Japan, March (2014).
• Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan, March (2014).
• Radiation Nuclear Physics Group, Department of Physics, Tohoku University, Sendai, Japan, March (2014).
• Prof. Asahi, Group, Department of Physics, Tokyo Institute of Technology, Tokyo, Japan, March, 2014.
• Invited talk at AISAMP11 meeting held at Tohoku University, Sendai, Japan, October (2014).
• Radiation Nuclear Physics Group, Department of Physics, Tohoku University, Sendai, Japan, October (2014).
• Invited speaker talk at AISAMP11 meeting held at Tohoku University, Sendai, Japan (October 2014).
• Keynote speaker talk at the Workshop on "The interplay between atomic and nuclear physics to study exotic nuclei" held at ECT*, Trento, Italy (24-27 August 2015).
• Invited talk at FPUA 2015 meeting held at RIKEN, Japan, 30 November - 1 December (2015).
• Radiation Nuclear Physics Group, Department of Physics, Tohoku University, Sendai, Japan, December (2015).
• Invited talk at HCI 2015 conference held at WIPM, Wuhan, China during 22-23 March (2016).
• Institute of Physics, Chinese Academy of Sciences, Beijing, China, 29 March (2016).
• Institute of Applied Physics, Chinese Academy of Sciences, Beijing, China, 29 March (2016).
• Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China, 1 April (2016).
• Invited speaker talk at the "19th International Conference on Recent Progress in Many-body Theories" held at POSCO International Center, Pohang, South Korea (25-30 June 2017).
• Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China, 14 July (2017).
• Institute of Physics, Chinese Academy of Sciences, Beijing, China, 25 August (2017).
• Invited speaker talk at the "The 4th Workshop on Atomic and Molecular Precision Spectroscopy" held at Northwest University, Xian, China (12-15 October 2017).
• Invited speaker talk at the "International Symposium on Theoretical Design of Materials with Innovative Functions Based on Element Strategy and Relativistic Electronic Theory" held at Tokyo Metroploitan University, Tokyo, Japan (8-9 December 2017).
• Invited speaker talk at the "Third Highly Charged Ion (HCI III) workshop" held at Hong Shan Hotel, Wuhan, China (23-27, April 2018).
• Institute of Modern Physics, Fudan University, 18 May, 2018.

POSTERS:

• H. S. Nataraj, B. P. Das, B. K. Sahoo, R. K. Chaudhuri and D. Mukherjee, The electric dipole moment of electron: Test of P & T- violations, AISAMP7, IIT Madras, December (2006).
• Gopal Dixit, P. C. Desmukh, B. K. Sahoo and Sonjoy Majumder, Many-body effects in hyperfine interaction in Tl III, SAMQCP (2007).
• B. K. Sahoo, Accurate estimations of polarizabilities using the relativis- tic coupled-cluster theory, LCC2007, MPIPKS, Dresden, Germany (2007).
• H. S. Nataraj, B. P. Das, B. K. Sahoo, R. K. Chaudhuri and D. Mukherjee, Search for the electric dipole moment of the electron using cold atoms, Indo-French Workshop for Young Scientists on Lasers, Quantum Optics and Bio-physics, Oct 29 - Nov. 2, Gif-sur-Yvette, near Paris, France (2007).
• H. S. Nataraj, B. P. Das, B. K. Sahoo and D. Mukherjee, Electric dipole moments of paramagnetic atoms , ICAP, USA (2008).
• O. Boll, G. S. Giri, O. O. Versolato, B. K. Sahoo, R. G. E. Timmermans, L. Wansweek, K. Jungmann and L. Willmann, Atomic clock with Ra+ , Nederland physics association meeting, Veldhoven (2009).
• G. S. Giri, O. O. Versolato, L. Wansweek, B. K. Sahoo, R. G. E. Timmermans, K. Jungmann and L. Willmann, Parity non-conservation in singly charged radium, http://www.icap.com/ (2009).
• O. B¨oll, G. S. Giri, O. O. Versolato, L. Wansweek, B. K. Sahoo, R. G. E. Timmermans, K. Jungmann and L. Willmann, Parity non-conservation in singly charged radium, Bad-Honnef, Germany (2009).
• G. S. Giri, B. K. Sahoo, O. O. Versolato, L. Wansweek, L. Willmann, H. W. Wilschut, K. Jungmann and R. G. E. Timmermans, Isotope shifts and Hyperfine structure of ²¹²²¹⁴Ra+, DPG meeting, Hannover, Germany (2010).