Comparison of Microwave and HXR Spectra from Solar Flares

Details Comparison of Microwave and HXR Spectra from Solar Flares Comparison of Microwave and HXR Spectra from Solar Flares

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spro.proc..255s&link_type=abstract

Solar Physics with Radio Observations, Proceedings of the Nobeyama Symposium, held in Kiyosato, Japan, Oct. 27-30, 1998, Edited

Physics

1

Scientific paper

We analyze simultaneous hard X-ray and microwave emission from 28 solar flares with multiple peaks. A total of 44 simultaneous peaks were observed at both wavelengths by BATSE (hard X-ray) and Owens Valley Radio Observatory (microwave). Spectra during each burst were fitted throughout the duration of the flare. The hard X-ray spectra were fitted by a single power-law in most cases, whereas the microwave spectra were fitted as gyrosynchrotron emission. The parameters at both wavelengths (peak flux, turnover frequency, duration, spectral indices, and delays between hard X-ray and microwave peak emission) are then compared and correlated for each individual peak. We find that for 74% of the bursts, the inferred index of the electron energy distribution of the microwave emitting electrons, δr, is harder than that of the lower energy hard X-ray emitting electrons, δx. This implies that there is a breakup in the energy spectra of the electrons, as is sometimes observed in the hard X-ray spectra of giant flares. Moreover, 65% of all bursts with δx > δr also showed delayed radio peak emission with respect to hard X-ray maximum. Implications on electron acceleration mechanisms are discussed.

Affiliated with

Also associated with

No associations

Rating

Comparison of Microwave and HXR Spectra from Solar 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 Comparison of Microwave and HXR Spectra from Solar Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison of Microwave and HXR Spectra from Solar Flares will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1062249