@article{oai:kanazawa-u.repo.nii.ac.jp:00010258,
 author = {米德, 大輔 and Yoshida, A and Namiki, M. and Yonetoku, Daisuke and Murakami, T. and Otani, C. and Kawai, N. and Ueda, Y. and Shibata, R. and Uno, S.},
 issue = {1},
 journal = {The Astrophysical Journal},
 month = {Aug},
 note = {A gamma-ray burst (GRB) of 1997 August 28 was localized by the All-Sky Monitor on the Rossi X-Ray Timing Explorer satellite, and its coordinates were promptly disseminated. An ASCA follow-up started 1.17 days after the burst as a Target-of-Opportunity Observation and detected an X-ray afterglow. The spectral data displayed a hump around ∼5 keV and an absorption column of 7.1 × 1021 cm-2. Taking into account the redshift z = 0.9578 found for the likely host galaxy of the associated radio flare, this hump structure is likely a recombination edge of iron in the vicinity of the source. The radiative recombination edge and continuum model can interpret the spectrum from highly ionized plasma in a nonequilibrium ionization state. The absorption could also be due to the medium presumably residing in the vicinity of the GRB., 金沢大学大学院自然科学研究科物理学},
 pages = {L27--L30},
 title = {A Possible Emission Feature in an X-Ray Afterglow of GRB 970828 as a Radiative Recombination Edge},
 volume = {557},
 year = {2001}
}