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Interplanetary consequences and geoeffectiveness of CME associated with major solar flare from NOAA AR 12673

Soni, Shirsh Lata; Gupta, Radhe Shyam; Verma, Pyare Lala

In this reported work, we study a major X-class flare (X9.3) that arose from NOAA Active Region (AR) 12673 on 2017 September 6, from 11:53 UT to 12:10 UT in multi-wavelength views. This event also produced a fast coronal mass ejection (CME). NOAA AR 12673 emerged at S09W30 on 2017 September 6 and grew rapidly to a large AR. On 2017 September 9, th…

A study on the dynamic spectral indices for SEP events on 2000 July 14 and 2005 January 20

Le, Gui-Ming; Zhao, Ming-Xian

We have studied the dynamic proton spectra for the two solar energetic particle (SEP) events on 2000 July 14 (hereafter GLE59) and 2005 January 20 (hereafter GLE69). The source locations of GLE59 and GLE69 are N22W07 and N12W58 respectively. Proton fluxes >30 MeV have been used to compute the dynamic spectral indices of the two SEP events. Our …