Estimation of Key Sunquake Parameters through Hydrodynamic Modeling and Cross-correlation Analysis

John T. Stefan, Alexander G. Kosovichev

Research output: Contribution to journalArticlepeer-review

Abstract

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 photospheric dopplergrams. We explore two possible excitation mechanisms of sunquakes in the context of the electron beam hypothesis: an instantaneous transfer of momentum and a gradual applied force due to flare eruption. 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.

Original languageEnglish (US)
Article number65
JournalAstrophysical Journal
Volume895
Issue number1
DOIs
StatePublished - May 20 2020

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Estimation of Key Sunquake Parameters through Hydrodynamic Modeling and Cross-correlation Analysis'. Together they form a unique fingerprint.

Cite this