Searching for cosmic missing baryons with DIOS - Diffuse intergalactic oxygen surveyor

Yasushi Suto; Kohji Yoshikawa; Noriko Y. Yamasaki; Kazuhisa Mitsuda; Ryuichi Fujimoto; Tae Furusho; Takaya Ohashi; Manabu Ishida; Shin Sasaki; Yoshitaka Ishisaki; Yuzuru Tawara; Akihiro Furuzawa

Searching for cosmic missing baryons with DIOS - Diffuse intergalactic oxygen surveyor

Yasushi Suto, Kohji Yoshikawa, Noriko Y. Yamasaki, Kazuhisa Mitsuda, Ryuichi Fujimoto, Tae Furusho, Takaya Ohashi, Manabu Ishida, Shin Sasaki, Yoshitaka Ishisaki, Yuzuru Tawara, Akihiro Furuzawa

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take the form of wa arm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to carry out a direct and homogeneous survey of elusive cosmic missing baryons, we propose a dedicated soft-X-ray mission, DIOS (Diffuse Intergalactic Oxygen Surveyor). The unprecedented energy resolution (∼ 2eV) of the XSA (X-ray Spectrometer Array) on-board DIOS enables us to identify WHIM with gas temperatures T = 10^6-7K and overdensity δ= 10-100 located at z < 0.3 through emission lines of OVII and OVIII. DIOS, which will hopefully be launched in several years time, promises to open a new window of detection and characterization of cosmic missing baryons and to provide yet another important and complementary tool to trace the large-scale structure of the universe.

Original language	English
Pages (from-to)	S110-S117
Journal	Journal of the Korean Physical Society
Volume	45
Issue number	SUPPL.
Publication status	Published - 10-2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Cite this

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title = "Searching for cosmic missing baryons with DIOS - Diffuse intergalactic oxygen surveyor",

abstract = "Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take the form of wa arm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to carry out a direct and homogeneous survey of elusive cosmic missing baryons, we propose a dedicated soft-X-ray mission, DIOS (Diffuse Intergalactic Oxygen Surveyor). The unprecedented energy resolution (∼ 2eV) of the XSA (X-ray Spectrometer Array) on-board DIOS enables us to identify WHIM with gas temperatures T = 106-7K and overdensity δ= 10-100 located at z < 0.3 through emission lines of OVII and OVIII. DIOS, which will hopefully be launched in several years time, promises to open a new window of detection and characterization of cosmic missing baryons and to provide yet another important and complementary tool to trace the large-scale structure of the universe.",

author = "Yasushi Suto and Kohji Yoshikawa and Yamasaki, {Noriko Y.} and Kazuhisa Mitsuda and Ryuichi Fujimoto and Tae Furusho and Takaya Ohashi and Manabu Ishida and Shin Sasaki and Yoshitaka Ishisaki and Yuzuru Tawara and Akihiro Furuzawa",

year = "2004",

month = oct,

language = "English",

volume = "45",

pages = "S110--S117",

journal = "Journal of the Korean Physical Society",

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TY - JOUR

T1 - Searching for cosmic missing baryons with DIOS - Diffuse intergalactic oxygen surveyor

AU - Suto, Yasushi

AU - Yoshikawa, Kohji

AU - Yamasaki, Noriko Y.

AU - Mitsuda, Kazuhisa

AU - Fujimoto, Ryuichi

AU - Furusho, Tae

AU - Ohashi, Takaya

AU - Ishida, Manabu

AU - Sasaki, Shin

AU - Ishisaki, Yoshitaka

AU - Tawara, Yuzuru

AU - Furuzawa, Akihiro

PY - 2004/10

Y1 - 2004/10

N2 - Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take the form of wa arm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to carry out a direct and homogeneous survey of elusive cosmic missing baryons, we propose a dedicated soft-X-ray mission, DIOS (Diffuse Intergalactic Oxygen Surveyor). The unprecedented energy resolution (∼ 2eV) of the XSA (X-ray Spectrometer Array) on-board DIOS enables us to identify WHIM with gas temperatures T = 106-7K and overdensity δ= 10-100 located at z < 0.3 through emission lines of OVII and OVIII. DIOS, which will hopefully be launched in several years time, promises to open a new window of detection and characterization of cosmic missing baryons and to provide yet another important and complementary tool to trace the large-scale structure of the universe.

AB - Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take the form of wa arm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to carry out a direct and homogeneous survey of elusive cosmic missing baryons, we propose a dedicated soft-X-ray mission, DIOS (Diffuse Intergalactic Oxygen Surveyor). The unprecedented energy resolution (∼ 2eV) of the XSA (X-ray Spectrometer Array) on-board DIOS enables us to identify WHIM with gas temperatures T = 106-7K and overdensity δ= 10-100 located at z < 0.3 through emission lines of OVII and OVIII. DIOS, which will hopefully be launched in several years time, promises to open a new window of detection and characterization of cosmic missing baryons and to provide yet another important and complementary tool to trace the large-scale structure of the universe.

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M3 - Article

AN - SCOPUS:10444239236

SN - 0374-4884

VL - 45

SP - S110-S117

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - SUPPL.

ER -

Searching for cosmic missing baryons with DIOS - Diffuse intergalactic oxygen surveyor

Abstract

All Science Journal Classification (ASJC) codes

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