Speaker
Prof.
Vahe' Petrosian
(Stanford University)
Description
The Fermi Large Area Telescope (LAT) has detected more than 40 flares with
significant flux above 100 MeV reaching to several GeV in some flares.
Most of these flares are detected many hours after the impulsive phase and some
of these flare last for occur behind the limb as determined by STEREO
observations. These observations when combined with those from instruments on
board other satellites such as RHESSI, SDO, STEREO and others have provided new
insights and challenges on the radiation, transport and acceleration
mechanisms. I will review these mechanisms and discuss how these
observations allow us to determine whether the gamma-ray radiation is due to
electron bremsstrahlung or decay of pions produced by accelerated ions, whether
these particles are accelerated continuously in the low corona and/or in the CME
driven shock, or promptly and stored for relatively long times in a high corona
trap.
Author
Prof.
Vahe' Petrosian
(Stanford University)
