Hostname: page-component-7c8c6479df-r7xzm Total loading time: 0 Render date: 2024-03-29T01:13:18.960Z Has data issue: false hasContentIssue false

A search for oscillating loops in Solar-B XRT observations

Published online by Cambridge University Press:  01 September 2007

Antonia Savcheva
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden st, Cambridge, MA02139, USA email: asavcheva@cfa.harvard.edu and edeluca@cfa.harvard.edu
Edward DeLuca
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden st, Cambridge, MA02139, USA email: asavcheva@cfa.harvard.edu and edeluca@cfa.harvard.edu
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Between November 2006 and March 2007, on several occasions, XRT has been taking high-cadence one or two filter observations of prominent active regions on the disk. We took these datasets and conducted a quick search for acoustic brightness oscillation in loops. We concentrated our search on flaring active regions. Here we present the preliminary results of this search. We found one active region - NOAA 10953 from 27 April - 02 May 2007 that had indications of acoustic oscillations with periods around 5 min, as well as multiples of this period, and one 40 min period that we associate with periodic heating of the loops. An interesting result is that all the loops in the active region seemed to oscillate with the same set of periods, only the power in the FFT was different and maybe dependent on the magnetic field strength.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008