RHESSI Microflare Statistics II. X-ray Imaging, Spectroscopy & Energy Distributions

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dc.creatorHannah, I. G.
dc.creatorChriste, S.
dc.creatorKrucker, S.
dc.creatorHurford, G. J.
dc.creatorHudson, H. S.
dc.creatorLin, R. P.
dc.date2007-12-15
dc.date.accessioned2026-07-07T09:23:12Z
dc.date.available2026-07-07T09:23:12Z
dc.descriptionWe present X-ray imaging and spectral analysis of all microflares the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) observed between March 2002 and March 2007, a total of 25,705 events. These microflares are small flares, from low GOES C Class to below A Class (background subtracted) and are associated with active regions. They were found by searching the 6-12 keV energy range during periods when the full sensitivity of RHESSI's detectors was available (see paper I). Each microflare is automatically analyzed at the peak time of the 6-12 keV emission: the thermal source size is found by forward-fitting the complex visibilities for 4-8 keV, and the spectral parameters (temperature, emission measure, power-law index) are found by forward fitting a thermal plus non-thermal model. The combination of these parameters allows us to present the first statistical analysis of the thermal and non-thermal energy at the peak times of microflares.
dc.description17 pages, 21 figs, ApJ
dc.identifierhttps://arxiv.org/abs/0712.2544
dc.identifierhttp://arxiv.org/abs/0712.2544
dc.identifierdoi:10.1086/529012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/155646
dc.subjectAstrophysics
dc.titleRHESSI Microflare Statistics II. X-ray Imaging, Spectroscopy & Energy Distributions
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