Observations of solar flare photon spectra from 20 keV to 7 MeV

Details Observations of solar flare photon spectra from 20 keV to 7 MeV Observations of solar flare photon spectra from 20 keV to 7 MeV

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jpsj...54.4462y&link_type=abstract

Physical Society of Japan, Journal (ISSN 0031-9015), vol. 54, Nov. 1985, p. 4462-4467.

Astronomy and Astrophysics

Astronomy

10

Energy Spectra, Photons, Solar Flares, Japanese Spacecraft, Line Spectra, Solar Instruments, Solar X-Rays, Spaceborne Astronomy

Scientific paper

Solar flare photon energy spectra in the 20 keV to 7 MeV range are derived from the Apr. 1, Apr. 4, Apr. 27 and May 13, 1981 flares. The flares were observed with hard X-ray and gamma-ray spectrometers on board the Hinotori satellite. The results reveal that the shape of hard X-ray spectrum for the gamma-ray flares does not much vary from flare to flare, and the spectra harden apparently at energy about 400 keV. Effects of nuclear line emission on the continuum and of higher energy electron bremsstrahlung are considered to explain the spectral hardening.

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