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  • High-rigidity Forbush decreases: due to CMEs or shocks? 
    Arunbabu, K. P.; Antia, H.M.; Dugad, S. R.; Gupta, S. K.; Hayashi, Y.; Kawakami, S.; Mohanty, P.K.; Nonaka, T.; Oshima, A.; SUBRAMANIAN, PRASAD (EDP Sciences, 2013-07)
    Aims. We seek to identify the primary agents causing Forbush decreases (FDs) in high-rigidity cosmic rays observed from the Earth. In particular, we ask if these FDs are caused mainly by coronal mass ejections (CMEs) from ...
  • Coronal turbulence and the angular broadening of radio sources – the role of the structure function 
    INGALE, MADHUSUDAN; SUBRAMANIAN, PRASAD; Cairns, Iver (Oxford University Press, 2015-03)
    The amplitude of density turbulence in the extended solar corona, especially near the dissipation scale, impinges on several problems of current interest. Radio sources observed through the turbulent solar wind are broadened ...
  • How are Forbush decreases related to interplanetary magnetic field enhancements 
    Arunbabu, K. P.; Antia, H.M.; Dugad, S. R.; Gupta, S. K.; Hayashi, Y.; Kawakami, S.; Mohanty, P.K.; Oshima, A.; SUBRAMANIAN, PRASAD (EDP Sciences, 2015-07)
    Aims. A Forbush decrease (FD) is a transient decrease followed by a gradual recovery in the observed galactic cosmic ray intensity. We seek to understand the relationship between the FDs and near-Earth interplanetary ...
  • Small electron acceleration episodes in the solar corona 
    James, Tomin; SUBRAMANIAN, PRASAD; Kontar, Eduard P. (Oxford University Press, 2017-10)
    We study the energetics of non-thermal electrons produced in small acceleration episodes in the solar corona. We carried out an extensive survey spanning 2004–2015 and shortlisted six impulsive electron events detected at ...
  • Analysis of archival wide-band radio spectrograph data from YAMAGAWA observatory 
    A V, AMOGHAVARSHA (2025-05)
    Solar radio bursts are unambiguous and sensitive tracers of non-thermal electrons in the corona. These non-thermal electrons owe their origin to episodes of solar activity and lead to a wide variety of radio emissions, ...