Location of the source of soft X-ray non-thermal line broadenings in a solar flare

Details Location of the source of soft X-ray non-thermal line broadenings in a solar flare Location of the source of soft X-ray non-thermal line broadenings in a solar flare

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...364..859r&link_type=abstract

Astronomy and Astrophysics, v.364, p.859-872 (2000)

Astronomy and Astrophysics

Astrophysics

10

Sun: Flares, Sun: X-Rays, Gamma Rays

Scientific paper

We determine the location of the source of the non-thermal Soft X-ray line broadenings in an M1.7 two-ribbon solar flare using multi-wavelength observations. Using a combination of the Yohkoh Soft X-ray Telescope (SXT), Hard X-ray Telescope (HXT), Bragg Crystal Spectrometer (BCS) and the Transition Region and Coronal Explorer (TRACE), we find the source of the non-thermal broadenings, at their peak value, to be located in and above the SXR flare loops, not at the flare loop footpoints. After eliminating the footpoints as a potential source we discuss the likelihood that the source of non-thermally broadened emission lines is either evaporating chromospheric plasma or plasma above the Soft X-ray flare loop that is associated with the flare energy release.

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