Refereed journal publications

“Energetics of small electron acceleration episodes in the solar corona from radio noise storm observations” James and Subramanian, 2018, to appear in the Monthly Notices of the Royal Astronomical Society

“Was the cosmic ray burst detected by the GRAPES-3 on 22 June 2015 caused by transient weakening of geomagnetic field or by an interplanetary anisotropy?” Mohanty, Arunbabu, Aziz, Dugad, Gupta, Hariharan, Jagadeesan, Jain, Morris, Nayak, Rakshe, Ramesh, Rao, Zuberi, Hayashi, Kawakami, Subramanian, Raha, Ahmad, Oshima, Shibata, Kojima 2018, Physical Review D, 97, 082001

“Turbulent density fluctuations and proton heating rate in the solar wind from 9-20 Rs”
Raja, Subramanian, Ramesh, Vourlidas and Ingale, 2017, Astrophysical Journal, 850, 129

“Imaging spectroscopy of solar radio burst fine structures” Kontar, Yu, Kuznetsov, Emslie, Alcock, Jeffrey, Melnik, Bian and Subramanian, 2017, Nature Communications, 8, 1515, doi:10.1038/s41467-017-01307-8

“Small electron acceleration episodes in the solar corona” James, Subramanian and Kontar, 2017, Monthly Notices of the Royal Astronomical Society, 471, 89

“CME dynamics using STEREO and LASCO observation: the relative importance of Lorentz forces and solar wind drag” Sachdeva, Subramanian, Vourlidas and Bothmer, 2017, Solar Physics, 292, 118

“Amplitude of solar wind density turbulence from 10-45 Rs” Raja, Ingale, Ramesh, Subramanian, Manoharan and Janardhan, 2016, Journal of Geophysical Research (Space Physics), 121, 11605

“Transient weakening of Earth’s magnetic shield probed by a cosmic ray burst” Mohanty, Arunbabu, Aziz, Dugad, Gupta, Hariharan, Jagadeesan, Jain, Morris, Rao, Hayashi, Kawakami, Oshima, Shibata, Raha, Subramanian and Kojima, 2016, Physical Review Letters, 117, 171101

"Relative contribution of the magnetic field barrier and solar wind speed in ICME-associated Forbush decreases" Bhaskar, Subramanian and Vichare, 2016, Astrophysical Journal, vol 828, p 104

"CME propagation - where does solar wind drag take over?"   Sachdeva, Subramanian, Colaninno and Vourlidas 2015,  Astrophysical Journal, vol 809, p 158

"How are Forbush decreases related with interplanetary magnetic field enhancements?"   Arunbabu, Antia, Dugad, Gupta, Hayashi, Kawakami, Mohanty, Oshima and Subramanian 2015,  Astronomy and Astrophysics, vol 580, p A41

"The structure of solar radio noise storms"

Mercier, Subramanian, Chambe and Janardhan 2015, Astronomy and Astrophysics, vol 576, p A136

"Coronal turbulence and the angular broadening of radio sources - the role of the structure function" 

Ingale, Subramanian and Cairns

2015, Monthly Notices of the Royal Astronomical Society, vol 447, p 3496

"A study of density modulation index in the inner heliospheric solar wind during solar cycle 23"
Bisoi, Janardhan, Ingale, Subramanian, Ananthakrishnan, Tokumaru and Fujiki
2014, Astrophysical Journal, vol 795,  p 69

"Self-similar expansion of solar coronal mass ejections: implications for Lorentz self-force driving"
Subramanian, Arunbabu, Vourlidas and Mauriya
2014, Astrophysical Journal, vol 790,  p 125

"High rigidity Forbush decreases: due to CMEs or shocks?"
Arunbabu, Antia, Dugad, Gupta, Hayashi, Kawakami, Mohanty, Nonaka, Oshima, Subramanian, 2013, Astronomy and Astrophysics, vol 555, id A139

"Can solar wind viscous drag account for CME deceleration?"
Subramanian, Lara and Borgazzi, 2012, Geophysical Research Letters, vol 39, CiteID L19107 

"TeV blazar variability: the firehose instability?"
Subramanian, Shukla and Becker, 2012, Monthly Notices of the Royal Astronomical Society, vol 423, pp. 1707 - 1710. 

"Velocity Profile of Interplanetary Coronal Mass Ejections Beyond 1 AU"
Lara, Flandes, Borgazzi and Subramanian, 2011, Journal of Geophysical Research (Space Physics), vol 116, A12102, doi:10.1029/2011JA016807. 

"Proposed visible emission line space solar coronagraph"
Singh et al, 2011, Current Science, vol 100, pp. 167-174. 

"Constraints on coronal turbulence models from source sizes of noise storms at 327 MHz"
Subramanian and Cairns, 2011, Journal of Geophysical Research (Space Physics), vol 116, A03104, doi:10.1029/2010JA015864. 

"Driving Currents for Flux Rope Coronal Mass Ejections"
Subramanian and Vourlidas, 2009, Astrophysical Journal, vol. 693, pp. 1219-1222. 

"Forbush decreases and turbulence levels at CME fronts"
Subramanian, Antia, Dugad, Goswami, Gupta, Hayashi, Ito, Kawakami, Kojima, Mohanty, Nayak, Nonaka, Oshima, Sivaprasad, Tanaka and Tonwar, 2009, Astronomy and Astrophysics, vol. 494, pp. 1107-1118. 

"An evaluation of possible mechanisms for anomalous resistivity in the solar corona"
Singh and Subramanian, 2007, Solar Physics, vol. 243, p. 163. 

"Electron acceleration in a post-flare decimetric continuum source"
Subramanian, White, Karlicky, Sych, Sawant and Ananthakrishnan, 2007, Astronomy and Astrophysics, vol. 468, pp. 1099-1102. 

"Energetics of Solar Coronal Mass Ejections"
Subramanian and Vourlidas, 2007, Astronomy and Astrophysics, vol. 467, pp. 685-693. 

"The Morphology of Decimetric Emission from Solar Flares: GMRT Observations"
Kundu, White, Garaimov, Subramanian, Ananthakrishnan, Janardhan, 2006, Solar Physics, vol. 236, pp. 369-387. 

"Further constraints on electron acceleration in solar noise storms"
Subramanian and Becker, 2006, Solar Physics, vol. 237, pp. 185-200. 

"Combining visibilities from the giant meterwave radio telescope and the Nancay radio heliograph. High dynamic range snapshot images of the solar corona at 327 MHz"
Mercier, Subramanian, Kerdraon, Pick, Ananthakrishnan, Janardhan, 2006, Astronomy and Astrophysics, vol. 447, pp. 1189-1201. 

"Restrictions on the physical prescription for the viscosity in advection-dominated accretion disks"
Becker and Subramanian, 2005, Astrophysical Journal, vol. 622, pp. 520-530. 

"Noise storm continua: power estimates for electron acceleration"
Subramanian and Becker, 2004, Solar Physics, vol.225, pp. 91-103. 

"Radio Observations of Rapid Acceleration in a Slow Filament Eruption/Fast CME event"
Kundu, White, Garaimov, Manoharan, Subramanian, Ananthakrishnan and Janardhan, 2004, Astrophysical Journal, vol. 607, pp. 530 - 539. 

"Angular Momentum Transport in Quasi-Keplerian Accretion Disks"
Subramanian, Pujari and Becker, 2004, Journal of Astrophysics and Astronomy, vol. 25, pp. 81 - 91. 

"Direct Detection of a CME-Associated Shock in LASCO White Light Images"
Vourlidas, Wu, Wang, Subramanian and Howard, 2003, Astrophysical Journal, vol. 598, pp. 1392 - 1402. 

"Giant Meterwave Radio Telescope observations of an M2.8 flare: insights into the initiation of a flare-coronal mass ejection event"
Subramanian, Ananthakrishnan, Janardhan, Kundu, White and Garaimov, 2003, Solar Physics, vol. 218, p. 247.

"Coronal Mass Ejection of July 14, 2000 Flare Event: Imaging from Near-Sun to Earth Environment"
Manoharan, Tokumaru, Pick, Subramanian, Ipavich, Schenk, Kaiser, Lepping and Vourlidas, 2001, Astrophysical Journal, vol. 559, pp. 1180-1189. 

"Are the hotspots of radio galaxies the sites of in-situ acceleration of relativistic particles?"
Gopal-Krishna, Subramanian, Wiita and Becker, 2001, Astronomy and Astrophysics, vol. 377, pp. 827-834. 

"Source Regions of Coronal Mass Ejections"
Subramanian and Dere
2001, Astrophysical Journal, vol. 561, pp. 372-395. 

"LASCO measurements of energetics of erupting flux ropes"
Vourlidas, Subramanian, Dere and Howard
2000, Astrophysical Journal, vol. 534, pp. 456-467. 

"Relativistic Outflows from Advection-dominated Accretion Disks around Black Holes"
Becker, Subramanian and Kazanas
2001, Astrophysical Journal, vol. 552, p 209.

"The Relationship of Coronal Mass Ejections to Streamers"
Subramanian, Dere, Rich & Howard
1999, Journal of Geophysical Research, vol. 104, pp. 22,321-22,330. 

"Formation of Relativistic Outflows in Shearing Black Hole Accretion Coronae"
Subramanian, Becker & Kazanas
1999, Astrophysical Journal, vol. 523, pp. 203-222. 

"Ion viscosity mediated by Tangled Magnetic fields: an application to Black Hole Accretion Disks"
Subramanian, Becker and Kafatos
1996, Astrophysical Journal, 469, 784. 

Review papers

"Electron acceleration in solar noise storms"
Subramanian, 2007, Asian J. of Physics, vol. 16, pp. 233-246.