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Upcoming Seminar/Colloqium

Topic:

Propagation of Coronal Mass Ejections during Solar Cycles 23 and 24

Speaker : Syed Ibrahim
Affiliation : ARIES
Date & Time :
Venue : Auditorium
Abstract :

In this presentation, we present a multi-wavelength and multi-instrument investigation of a halo coronal mass ejection (CME) from active region NOAA 12371 on 21 June 2015 that led to a major geomagnetic storm of minimum Dst=−204 nT. Also, for understanding the CME propagation, we present a statistical study probing the relation between interplanetary coronal mass ejections (ICMEs) observed at 1 AU and their corresponding coronal mass ejections at the near-Sun region. The work encompasses the ICME activity that occurred during Solar Cycles 23 and 24 (1996 – 2017) while presenting an overall picture of ICME events during the complete Solar Cycle 24 for the first time. The importance of this study further lies in comparing two subsets of ICMEs, i.e. magnetic clouds (MCs) and ejecta (EJ), to explore how the observed structures of ICMEs at 1 AU could be associated with the properties of CMEs during their launch at the Sun.

About Speaker :

Syed is a postdoctoral fellow in ARIES, and have recently joined. This is a part of the Tuesday Seminar series.