Soft X-Ray Transmission Spectroscopy of a Warm/Hot Intergalactic Medium with XEUS | Zendy

Hajime Kawahara | Zendy; Kohji Yoshikawa | Zendy; Shin Sasaki | Zendy; Yasushi Suto | Zendy; N. Kawai | Zendy; Kazuhisa Mitsuda | Zendy; Takaya Ohashi | Zendy; Noriko Y. Yamasaki | Zendy

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Soft X-Ray Transmission Spectroscopy of a Warm/Hot Intergalactic Medium with XEUS

Author(s) -

Hajime Kawahara,

Kohji Yoshikawa,

Shin Sasaki,

Yasushi Suto,

N. Kawai,

Kazuhisa Mitsuda,

Takaya Ohashi,

Noriko Y. Yamasaki

Publication year - 2006

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/58.4.657

Subject(s) - qsos , physics , astrophysics , intergalactic travel , absorption (acoustics) , metallicity , line of sight , sky , spectral line , accretion (finance) , emission spectrum , line (geometry) , spectroscopy , ionization , astronomy , galaxy , quasar , redshift , optics , quantum mechanics , ion , geometry , mathematics

We discuss the detectability of Warm/Hot Intergalactic medium (WHIM) via theabsorption lines toward bright point sources with a future X-ray satellitemission, XEUS. While we consider bright QSOs as specific examples, themethodology can be applied to bright GRB afterglows. We create mock absorptionspectra for bright QSOs (more than 20 QSOs over the all sky) using a light-coneoutput of a cosmological hydrodynamic simulation. We assume that WHIM is undercollisional and photo-ionization equilibrium. If WHIM has a constantmetallicity of $Z=0.1Z_\odot$, approximately 2 O{\sc vii} absorption linesystem with $>3\sigma$ will be detected on average along a random line-of-sighttoward bright QSOs up to $z=0.3$ for 30 ksec exposure.Comment: 34 pages, 17 figures. Substantial revision. PASJ, in press (2006, vol.58, August 25 issue

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