Soft X-ray emission from gamma-ray bursts observed with GINGA
Author
Japanese:
Yoshida, A.,
Murakami, T.,
Itoh, M.,
Nishimura, J.,
Tsuchiya, T.,
Fenimore, E. E.,
Klebesadel, R. W.,
Evans, W. D.,
Kondo, I.,
河合 誠之.
English:
Yoshida, A.,
Murakami, T.,
Itoh, M.,
Nishimura, J.,
Tsuchiya, T.,
Fenimore, E. E.,
Klebesadel, R. W.,
Evans, W. D.,
Kondo, I.,
Kawai, N..
Language
English
Journal/Book name
Japanese:
English:
Publications of the Astronomical Society of Japan
Volume, Number, Page
Vol. 41
pp. 509-518
Published date
1989
Publisher
Japanese:
English:
Conference name
Japanese:
English:
Conference site
Japanese:
English:
Abstract
The soft X-ray emission of gamma-ray bursts below 10 keV provides information about size, location, and emission mechanism. The gamma-ray burst detector on Ginga, which consists of a proportional counter and a scintillation detector, covers an energy range down to 1.5 keV with 63-sq cm effective area. In several of the observed gamma-ray bursts, the intensity of the soft X-ray emission showed a longer decay time of 50 to 100 sec after the higher-energy gamma-ray emission had ended. The soft X-ray spectra are consistent with a blackbody of 1 to 2 keV in the late phase of the gamma-ray bursts.