Observations of the high-redshift quasar Q1745 + 624 (z = 3.9) with ASCA | Zendy

H. Kubo | Zendy; Kazuo Makishima | Zendy; Tadayuki Takahashi | Zendy; M. Ishida | Zendy; H. Inoue | Zendy; M. Matsuoka | Zendy; Noriko Y. Yamasaki | Zendy; Kenta Suzuki | Zendy

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Observations of the high-redshift quasar Q1745 + 624 (z = 3.9) with ASCA

Author(s) -

H. Kubo,

Kazuo Makishima,

Tadayuki Takahashi,

M. Ishida,

H. Inoue,

M. Matsuoka,

Noriko Y. Yamasaki,

Kenta Suzuki

Publication year - 1997

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/287.2.328

Subject(s) - physics , quasar , astrophysics , redshift , galaxy , rest frame , luminosity , spectral line , spectral index , astronomy , spectral density , photon , optics , statistics , mathematics

Q1745 + 624 is located at redshift z = 3.89, and is one of the most distant quasars observed in the X-ray band. Q1745 + 624 was clearly detected with ASCA in the 0.5–7 keV X-ray band, or in 2.4–34 keV in the quasar rest frame. If the energy spectrum is fitted by a single power law with photoelectric absorption, the photon index becomes 1.68−0.24+0.25, and the column density NH becomes 2.1−1.4+1.5 ...

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