Communication Dans Un Congrès Année : 2013

Can we detect local helioseismic parameter shifts in coronal holes?

Résumé

Changes in helioseismic mode parameters in active regions and across the solar disk are well documented, but local magnetic activity and geometric effects may not account for all of the scatter seen in the results. We use results from the Helioseismic and Magnetic Imager ring-diagram pipeline for Carrington rotation 2113 to look for differences in mode amplitude and frequency between coronal holes and other quiet-Sun regions. While we do not find a systematic difference, the results do suggest that the correlation between magnetic activity index and mode parameters shows less scatter in coronal hole regions than in general quiet Sun.

Dates et versions

hal-03743862 , version 1 (02-08-2022)

Identifiants

Citer

R. Howe, D. A. Haber, R. S. Bogart, Sergey I. Zharkov, Deborah Baker, et al.. Can we detect local helioseismic parameter shifts in coronal holes?. Eclipse on the Coral Sea: Cycle 24 Ascending (GONG 2012, LWS/SDO-5, and SOHO 27), Nov 2012, Palm Cove, Queensland, Australia, Australia. pp.2019, ⟨10.1088/1742-6596/440/1/012019⟩. ⟨hal-03743862⟩
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