Publications from the RSIM section


  1. Ambili, K.M., Sneha S. Babu, and R.K. Choudhary , "On the relative roles of the neutral density and photo chemistry on the solar zenith angle variations in the V2 layer characteristics of the Venus ionosphere under different solar activity conditions", Icarus, 321, 661-670, , 2018. (
  2. Ando, H., Takagi, M., Fukuhara, T., Imamura, T., Sugimoto, N., Sagawa, H., Noguchi, K., Tellmann, S., Pätzold, M., Häusler, B., Murata, Y., Choudhary R.K, "Local time dependence of the thermal structure in the Venusian equatorial upper atmosphere: Comparison of Akatsuki radio occultation measurements and GCM results.", Journal of Geophysical Research: Planets, 123, 2018. (
  3. Bagiya, M.S., S.V. Thampi, D. Hui, A.S. Sunil, D. Chakrabarty, and R.K. Choudhary, "Signatures of the solar transient disturbances over the low latitude ionosphere during 6 to 8 September 2017", Journal of Geophysical Research: Space Physics, 123, 2018. (
  4. Shreedevi, P.R., R.K. Choudhary, S. Yadav, S. Thampi, A. Ajesh, "Variation of the TEC at a dip equatorial station, Trivandrum and a mid latitude station, Hanle during the descending phase of the solar cycle 24 (2014–2016) ", Journal of Atmospheric and Solar-Terrestrial Physics, 179, 425-434, 2018.
  5. Thampi S.V, Krishnaprasad C., Anil Bhardwaj, Yuni Lee, R. K. Choudhary and T. K. Pant, "MAVEN observations of the response of Martian ionosphere to the interplanetary coronal mass ejections of March 2015", Journal of Geophysical Research – Space Physics , 2018. ( 2018JA025444)


  1. Imamura, T., Ando, H., Tellmann, S., Pätzold, M., Häusler, B., Yamazaki, A., Sato, T.M., Noguchi, K., Futaana, Y., Oschlisniok, J. and Limaye, S., R. K. Choudhary, R. K. Choudhary, Yasuhiro Murata, Hiroshi Takeuchi, Chikako Hirose, Tsutomu Ichikawa, Tomoaki Toda, Atsushi Tomiki, Takumi Abe, Zen?ichi Yamamoto, Hirotomo Noda, Takahiro Iwata, Shin?ya Murakami, Takehiko Satoh, Tetsuya Fukuhara, Kazunori Ogohara, Ko?ichiro Sugiyama, Hiroki Kashimura, Shoko Ohtsuki, Seiko Takagi, Yukio Yamamoto, Naru Hirata, George L. Hashimoto, Manabu Yamada, Makoto Suzuki, Nobuaki Ishii, Tomoko Hayashiyama, Yeon Joo Lee and Masato Nakamura, "Initial performance of the radio occultation experiment in the Venus orbiter mission", Earth, Planets and Space, 2017. (
  2. Pramod Kumar, R.K. Choudhary, Yogesh C. Bhatt, and Yadvendra S. Shishodia, "A study on the response of Indian dip and low latitude ionospheric regionsto a limb centred X9. 0 class solar flare", ; Indian J. Radio Space Physics, 46, 37-45, 2017.
  3. Sunda, Surendra, Sneha Yadav, R. Sridharan, M. S. Bagiya, P. V. Khekale, Pan Singh, and S. V. Satish, "SBAS-derived TEC maps: a new tool to forecast the spatial maps of maximum probable scintillation index over India", GPS Solutions , 21, no. 4 (2017): 1469-1478., 2017.
  4. Shreedevi P. R. and R. K. Choudhary, "Impact of oscillating IMF Bz during 17 March 2013 storm on the distribution of plasma over Indian low-latitude and mid-latitude ionospheric regions", Journal of Geophysical Research – Space Physics , 122, 11,607-11,623, 2017. (
  5. Unnikrishnan, K., H. Sreekumar, R. K. Choudhary, V. M. Ashna, K. M. Ambili, P. R. Shreedevi, and P. B. Rao, "A study on the evolution of plasma bubbles using the single station-multisatellite and multistation-single satellite techniques", Journal of Geophysical Research – Space Physics , 122, 3678–3688, 2016. ( )
  6. Yadav, S., T K. Pant, R. K. Choudhary, C. Vineeth, S. Sunda, K. K.Kumar, K. K., S. Mukherjee, "Impact of sudden stratospheric warming of 2009 on the equatorial and low-latitude ionosphere of the Indian longitudes: A case study", Journal of Geophysical Research – Space Physics , 122, 2017. ( 2017JA024392)
  7. Yadav, Sneha,R. Sridharan, Surendra Sunda, and Tarun K. Pant, "Further refnements to the spatiotemporal forecast model for L band -scintillation based on comparison with C/NOFS observations", Journal of Geophysical Research – Space Physics , 122, no. 5 (2017): 5643-5652., 2017. ( )


  1. Bhardwaj, A., T. K. Pant, R. K. Choudhary, D. Nandy, and P. K. Manoharan, "Space Weather Research: Indian Perspective", Space Weather, 14, 2016. ( )
  2. Chandra H., R. G. Rastogi, R.K. Choudhary and S.Sharma, "Equatorial electrojet in the Indian egion during the geomagnetic storm of 13–14 November 1998", Journal of Earth System Science,, 125(3), pp.669-675, 2016.
  3. Choudhary R. K., K. M. Ambili, S. Choudhury, M. B. Dhanya, and A. Bhardwaj, "On the origin of the ionosphere at the Moon using results from Chandrayaan-1 S-Band Radio Occultation Experiment and a photochemical model", Geophysical Research Letters, 2016. (
  4. Shreedevi P. R., S.V. Thampi, D. Chakrabarty, R. K. Choudhary, T. K. Pant, A. Bhardwaj and S. Mukherjee, "On the latitudinal changes in the ionospheric electrodynamics and composition based on observations over the 76-77oE meridian from both hemisphere during a geomagnetic storm", Journal of Geophysical Research – Space Physics , 21, 76-77, 2016. (
  5. Thampi, S. V., P. R. Shreedevi, R. K. Choudhary, T. K. Pant, D. Chakrabarty, S. Sunda,S. Mukherjee, and A. Bhardwaj, "Direct observational evidence for disturbance dynamo on the daytime low-latitude ionosphere: A case study based on the 28 June 2013 space weather event", Journal of Geophysical Research – Space Physics , 121, 2016. (
  6. Yadav Sneha, R. Sridharan, Surendra Sunda, "Impact of the 17 March 2015- St. Patrick’s Day storm on the evolutionary pattern of equatorial ionization anomaly over the Indian longitudes using high resolution spatio-temporal TEC maps -New insights", Space Weather, 2016. ( )


  1. Bagiya Mala S.,R. Sridharan, Surendra Sunda, Lijo Jose, Tarun K. Pant, and R. K. Choudhary , "Impact of the perturbation zonal velocity variation on the spatio/temporal, occurrence pattern of L band scintillation—A case study", Journal of Geophysical Research – Space Physics , 120(7), pp.5882-5889, 2015, 2015. ( 2015JA021322)
  2. Panda S. K, S. S Gedam, G Rajaram, S. Sripathi, T. K. Pant, R.M. Das, "A multi-technique study of the 29–31 October 2003 geomagnetic storm effect on low latitude ionosphere over Indian region with magnetometer, ionosonde, and GPS observations", Astrophysics and Space Science, 354 (2), 267-274, 2015. (
  3. Smitha V Thampi., Mala Bagiya., D. Chakrabarty. , Y. B Acharya., and M. Yamamoto, "n ensemble average method to estimate absolute TEC using radio beacon based differential phase measurements: applicability to regions of large latitudinal gradients in plasma density", Radio Science, 49 (12), 2015. (
  4. Sridharan, R., Lijo Jose, Mala S. Bagiya, Surendra Sunda, R. K. Chaudhary, and Tarun K. Pant, "Refnement of the background ionospheric conditions and plausible explanation based on neutral dynamics for the occurrence/non-occurrence of L-band scintillation patches against forecast", Journal of Atmospheric and Solar-Terrestrial Physics, 133, pp.18-24, 2015.


  1. Ambili, K. M., R. K. Choudhary, and J.-P. St.- Maurice, "Seasonal differences in the sunrise undulations at the dip equator at solar minimum at two distinct locations and their relation with postsunset electrodynamics", Journal of Geophysical Research (Space Physics), 2014. (
  2. Bagiya M. S, R Sridharan, S Sunda, L Jose, TK Pant, "Critical assessment of the forecasting capability of L-band scintillation over the magnetic equatorial region–Campaign results", Journal of Atmospheric and Solar-Terrestrial Physics, 2014. (
  3. Dhaka S.K, V Kumar , R K Choudhary,Shu-Peng Ho, M. Takahashi, and Shigeo Yoden , "Indications of a strong dynamical coupling between the polar and tropical regions during the sudden stratospheric warming event January 2009, based on COSMIC/FORMASAT-3 Satellite temperature data", Atmospheric Research, 2014. (
  4. Kumar V, S. K. Dhaka, R. K. Choudhary, Shu-Peng Ho, and K. Krishna Reddy, "On the occurrence of the coldest region in the stratosphere and tropical tropopause stability: study using COSMIC/FORMOSAT-3 satellite measurements", Journal of Atmospheric and Solar-Terrestrial Physics, 121, 271-286, 2014. (