Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...592l..49z&link_type=abstract
The Astrophysical Journal, Volume 592, Issue 1, pp. L49-L52.
Astronomy and Astrophysics
Astronomy
5
Scattering, Sun: Flares, Sun: X-Rays, Gamma Rays
Scientific paper
A study of the photon spectra of three Yohkoh/hard X-ray telescope (HXT) events at the nonthermal peak times is presented. It is found that the photon spectra are very hard (γ~2.6-3.1) and have a single power law approximately between the HXT M1 and H channels (23-93 keV). However, the photon spectra become very flattened between the HXT L and M1 channels (13-33 keV); i.e., the M1/L channel ratio is excessively large. Consequently, the observed photon spectra cannot be produced simply by a single-power-law electron spectrum with a low-energy cutoff/flattening. We understand that this property of the photon spectra may result from the superposition of a strong Compton backscattering component in the observed hard X-ray spectra. This Letter points out that the contribution of the Compton backscattering may actually be significant for the received hard X-ray emissions in the deka-keV energy range, which has been indicated by previous researchers through theoretical calculations.
Huang Guang Li
Zhang Jian
No associations
LandOfFree
The Effect of the Compton Backscattering Component on the Photon Spectra of Three Yohkoh/Hard X-Ray Telescope Flares does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Effect of the Compton Backscattering Component on the Photon Spectra of Three Yohkoh/Hard X-Ray Telescope Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Effect of the Compton Backscattering Component on the Photon Spectra of Three Yohkoh/Hard X-Ray Telescope Flares will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1465569