Stochastic seismic emission from acoustic glories in solar active regions

Alina-Catalina Donea, Marie Newington

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

4 Citations (Scopus)

Abstract

Helioseismic images of active regions show enhanced seismic emission in 5 mHz oscillations in a halo surrounding the active region called the acoustic glory . In this paper we analyse the high-frequency power excess surrounding two active regions that occurred during the shy ascending phase of the solar cycle 24, at the beginning of 2010. This study compares the acoustic properties of seismic emission from acoustic glories with that from the quiet Sun. The power distribution of quiet-Sun seismic emission far from solar activity is exponential, as for random Gaussian noise, and therefore not episodic. The magnitudes of the acoustic glories and their seismic structure allow us to make predictions of the seismic behaviour of active regions and compare the data with present theoretical models.
Original languageEnglish
Title of host publicationJournal of Physics: Conference Series [P]
EditorsThierry Appourchaux
Place of PublicationUK
PublisherIOP Publishing
Pages1 - 5
Number of pages5
Volume271
ISBN (Print)1742-6596
DOIs
Publication statusPublished - 2011
EventJoint Conference of the Global Oscillation Network Group and Solar and Heliospheric Observatory (GONG/SOHO) 2011 - Aix-en-Provence, France
Duration: 27 Jun 20102 Jul 2010

Conference

ConferenceJoint Conference of the Global Oscillation Network Group and Solar and Heliospheric Observatory (GONG/SOHO) 2011
Abbreviated titleGONG2010–SoHO24
CountryFrance
CityAix-en-Provence
Period27/06/102/07/10
OtherVolume 271 (2011) of the Journal of Physics: Conference Series provides a record of the invited and contributed talks, and of the posters presented at the GONG2010–SoHO24 conference entitled 'A new era of seismology of the Sun and solar-like stars'. The conference was held from 27 June 2010 to 2 July 2010 in Aix-en-Provence, France.

Cite this

Donea, A-C., & Newington, M. (2011). Stochastic seismic emission from acoustic glories in solar active regions. In T. Appourchaux (Ed.), Journal of Physics: Conference Series [P] (Vol. 271, pp. 1 - 5). IOP Publishing. https://doi.org/10.1088/1742-6596/271/1/012004