http://arxiv.org/abs/1911.06839
Sunquakes are one of the more distinct secondary phenomena related to solar flares, where energy deposition in the lower layers of the Sun’s atmosphere excites acoustic waves easily visible in HMI dopplergrams. We explore two possible sources of sunquakes in the context of the electron beam hypothesis, as an instantaneous transfer of momentum and as a gradual applied force. We model the sunquake excitation and compare with five observed sunquake events using a cross-correlation analysis. We find that at least half the events studied are consistent with the electron beam hypothesis and estimate the energy required to excite the sunquakes to be within the range determined by previous studies.
J. Stefan and A. Kosovichev
Tue, 19 Nov 19
36/65
Comments: N/A
You must be logged in to post a comment.