ROSES ID: NNH11ZDA001N Selection Year: 2012
Program Element: Focused Science Topic
Principal Investigator: Alexander Kosovichev
Affiliation(s): Stanford University
Project Member(s):
Struminsky, Alexei Collaborator Space Research Institute
Wray, Alan A. Collaborator NASA Ames Research Center
Kitiashvili, Irina N Co-I NASA Ames Research Center
Zhao, Junwei Co-I null
Parchevsky, Konstantin Co-I Stanford University
Kontar, Eduard Collaborator University of Glasgow
Stenflo, Jan Collaborator null
Scherrer, Philip H. Co-I HEPL
Summary:
The sunquakes, observed in the form of expanding wave ripples, in the solar photosphere represent packets of acoustic waves that are excited by flare impacts and travel through the solar interior. The excitation impacts strongly correlate with the impulsive flare phase and are caused by the energy and momentum transport from the flare magnetic energy released sites. However, the exact mechanism of the energy and momentum transport are not known. Solving the problem of the sunquake mechanism will substantially improve our understanding of the flare energy release in the form of energetic particles, wave and mass motions, and radiation. We propose a comprehensive investigation of the sunquake properties and their relationship to the physical processes of the impulsive phase, using observational data from the SDO, RHESSI, Hinode, SOHO, GONG, and numerical modeling. The problem of the flare dynamics in the lower solar atmosphere is very complex and involves a wide range of topics from the particle acceleration in specific magnetic configurations, MHD instabilities and CME initiation to the impacts in the solar photosphere and helioseismic response.Performance Year | Reference | Investigation Type | Actions |
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1 | Kosovichev, Alexander G.; (2014), Sunquakes and starquakes... | not set | |
1 | Sharykin, I. N.; Kosovichev, A. G.; Zimovets, I. V.;... | not set | |
1 | Sharykin, I. N.; Kosovichev, A. G.; (2015), Dynamics of... | not set | |
1 | Sharykin, I. N.; Kosovichev, A. G.; Sadykov, V. M.;Â... | not set |
Performance Year | Reference | Actions |
---|---|---|
1 | Kosovichev, Alexander G.; (2012), Physics of Sunquakes Event... | |
1 | Kosovichev, Alexander G.; (2014), Sunquakes: helioseismic re... | |
1 | Kosovichev, Alexander G.; Sharykin, Ivan; Zimovets, Iv... | |
1 | Sharykin, I.; Kosovichev, A. G.; (2014), Flare Energy Re... | |
1 | Sharykin, Ivan; Kosovichev, Alexander; (2015), Dynamics o... | |
1 | Sharykin, Ivan; Kosovichev, Alexander; (2015), Dynamics of E... | |
1 | Sharykin, Ivan N; Kosovichev, Alexander G; Sadykov, V... |