Multi-wavelength Observations of Supra-Arcade Structure associated with M1.6 Limb Flare

Details Multi-wavelength Observations of Supra-Arcade Structure associated with M1.6 Limb Flare Multi-wavelength Observations of Supra-Arcade Structure associated with M1.6 Limb Flare

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh33a2032k&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SH33A-2032

Astronomy and Astrophysics

Astrophysics

[7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7534] Solar Physics, Astrophysics, And Astronomy / Radio Emissions

Scientific paper

We have investigated supra-arcade structure produced by M1.6 flare that occurs in east-north limb on 2010 Nov 4th. For this work, we have used multi-wavelength observations from microwave at 17 and 34 GHz with Nobeyama Radioheliograph (NoRH), Hard X-rays at the range of 8-20 keV with Ramaty High Energy Solar Spectroscopic Imager (RHESSI), EUV with Atmospheric Imaging Assembly (AIA) onboard Solar Dynamic Observatory (SDO), and X-ray telescope (XRT) onboard Hinode. As reported by Reeves & Golub (2011), this supra-arcade structure comes into sight predominantly on AIA 131 Å channel, one of AIA multi-channel, that contain a contribution from Fe XIX formed at 11 MK (Boerner et al. 2011). While this hot flare plasma lasts over the decay phase of the flare, we found two separated Hard X-ray sources in the high corona inside of the hot flare plasma as well as above the top of the flare loop. For these two HXR sources, we have estimated the plasma temperature using filter ratio with a pair of XRT thick filter and derived the emission measure, density, and thermal energy using brightness temperature obtained by 17 GHz microwave observation. Based on the results, we discuss the physical mechanism to generate the supra-arcade structure.

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