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Colloquium

Triggering and evolution of eruptive phenomena on the Sun: A Multi-wavelength perspective

2018-06-05
  • Speaker : Dr. Bhuwan Joshi (Udaipur Solar Observatory, India)
  • Date : 2018-06-20 16:00 ~ 17:00
  • Location : JYS 331-2
  • Host : Dr. Roksoon Kim

Solar eruptive phenomena occur at different spatial, temporal and energy scales. A flare is the most violent form of solar activity which essentially represents sudden release of excess energy stored in the magnetic fields of solar corona. The contemporary multi-wavelength observations have immensely improved our understanding of the various physical processes occurring in different atmospheric layers of the Sun during a solar flare. The standard flare model has been successful in broadly recognizing these physical processes as the consequence of large-scale magnetic reconnection in the corona. Jets and coronal mass ejections are among important phenomena associated with solar flares.

The objective of the present talk is to summarize the multi-wavelength observations of solar flares and associated phenomena taken mainly from the space borne instruments over the last decade. I will highlight some recent works on magnetic field modelling of the active region corona that shed light upon the triggering and energy release mechanisms. I will also briefly discuss contemporary observations on flare-flux rope-CME associations in the lower corona and their space weather consequences.