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IJRSP Vol.38(3) [June 2009] >

Title: Properties of SEPs effective CMEs during solar cycle 23
Authors: Kumar, Santosh
Pal, Janki
Raizada, Amita
Keywords: Coronal mass ejection
Solar energetic particles
Solar flares
Radio bursts
Issue Date: Jun-2009
Publisher: CSIR
PACS No.: 96.50.Vg;; 96.60.qe
Abstract: Seventy five large solar energetic particle (LSEP) events of different groups of proton intensity have been investigated during 1997-2005. It is observed that proton intensity increases linearly with increase in velocity of SEPs effective coronal mass ejections (CMEs). Further, for proton intensity I > 350 pfu, most of the SEPs effective CMEs are associated with X class of X-ray flares; whereas, for proton intensity I< 350 pfu, the SEPs effective CMEs are associated mainly with M and C class of X-ray flares. Furthermore, most of the CMEs are of halo type and occur mostly in western hemisphere for proton intensity I>350 pfu; whereas, for proton intensity I<350 pfu, CMEs observed in the eastern hemisphere are equally important. The association of SEPs effective CMEs has been observed better for longer wavelength, i.e. Decameter – Hectometer (DH) Type II radio bursts than shorter wavelength, i.e. metric (m) Type II radio bursts.
Page(s): 129-133
ISSN: 0975-105X (Online); 0367-8393 (Print)
Source:IJRSP Vol.38(3) [June 2009]

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