A Radiative Recombination Edge in the X-ray Afterglow of GRB 970828, and Non-Equilibrium Ionization States
著者
和文:
Yonetoku, D.,
Murakami, T.,
Yoshida, A.,
Masai, K.,
河合 誠之,
Namiki, M. ..
英文:
Yonetoku, D.,
Murakami, T.,
Yoshida, A.,
Masai, K.,
Kawai, N.,
Namiki, M. ..
言語
English
掲載誌/書名
和文:
英文:
Gamma-Ray Burst and Afterglow Astronomy 2001: A Workshop Celebrating the First Year of the HETE Mission
巻, 号, ページ
Vol. 662
pp. 383-386
出版年月
2003年4月
出版者
和文:
英文:
会議名称
和文:
英文:
開催地
和文:
英文:
アブストラクト
We observed the X-ray afterglow of GRB 970828 with the Japanese X-ray satellite ASCA. The spectral data displayed a hump around ~ 5 keV. This hump structure is likely a recombination edge of iron in the vicinity of the source, taking into account the redshift z = 0.9578 found for the likely host galaxy of the associated radio flare. The Radiative Recombination Edge and Continuum model can interpret the spectrum as coming from a highly ionized plasma in a non-equilibrium ionization state.
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