TY - JOUR
T1 - Locating the warm-hot intergalactic medium in the simulated local universe
AU - Yoshikawa, Kohji
AU - Dolag, Klaus
AU - Suto, Yasushi
AU - Sasaki, Shin
AU - Yamasaki, Noriko Y.
AU - Ohashi, Takaya
AU - Mitsuda, Kazuhisa
AU - Tawara, Yuzuru
AU - Fujimoto, Ryuichi
AU - Furusho, Tae
AU - Furuzawa, Akihiro
AU - Ishida, Manabu
AU - Ishisaki, Yoshitaka
AU - Takei, Yoh
PY - 2004
Y1 - 2004
N2 - We present an analysis of mock spectral observations of warm-hot intergalactic medium (WHIM) using a constrained simulation of the local universe. The simulated map of oxygen emission lines from local WHIM well reproduces the observed structures traced by galaxies in the real local universe. We further attempt to perform mock observation of the outer parts of the simulated Coma cluster and A 3627 adopting the expected performance of DIOS (Diffuse Intergalactic Oxygen Surveyor), which is proposed as a dedicated soft X-ray mission to search for cosmic missing baryons. We find that WHIMs surrounding nearby clusters are detectable with a typical exposure time of one day, and thus constitute realistic and promising targets for DIOS. We also find that an X-ray emitting clump in front of Coma cluster, recently reported in the XMM-Newton observation, has a counterpart in the simulated local universe, and its observed spectrum can be well reproduced in the simulated local universe if the gas temperature is set to the observationally estimated value.
AB - We present an analysis of mock spectral observations of warm-hot intergalactic medium (WHIM) using a constrained simulation of the local universe. The simulated map of oxygen emission lines from local WHIM well reproduces the observed structures traced by galaxies in the real local universe. We further attempt to perform mock observation of the outer parts of the simulated Coma cluster and A 3627 adopting the expected performance of DIOS (Diffuse Intergalactic Oxygen Surveyor), which is proposed as a dedicated soft X-ray mission to search for cosmic missing baryons. We find that WHIMs surrounding nearby clusters are detectable with a typical exposure time of one day, and thus constitute realistic and promising targets for DIOS. We also find that an X-ray emitting clump in front of Coma cluster, recently reported in the XMM-Newton observation, has a counterpart in the simulated local universe, and its observed spectrum can be well reproduced in the simulated local universe if the gas temperature is set to the observationally estimated value.
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U2 - 10.1093/pasj/56.6.939
DO - 10.1093/pasj/56.6.939
M3 - Article
AN - SCOPUS:12144249416
SN - 0004-6264
VL - 56
SP - 939
EP - 957
JO - Publications of the Astronomical Society of Japan
JF - Publications of the Astronomical Society of Japan
IS - 6
ER -