Origin of thermal and non-thermal hard X-ray emission from the Galactic center

V. A. Dogiel; K. S. Cheng; D. O. Chernyshov; H. Inoue; C. M. Ko; M. Kokubun; Y. Maeda; K. Mitsuda; N. Y. Yamasaki

Origin of thermal and non-thermal hard X-ray emission from the Galactic center

V. A. Dogiel, K. S. Cheng, D. O. Chernyshov, H. Inoue, C. M. Ko, M. Kokubun, Y. Maeda, K. Mitsuda, N. Y. Yamasaki

Graduate Institute of Astronomy

Research output: Contribution to journal › Conference article › peer-review

Abstract

We analyse new results of CHANDRA and SUZAKU which found a flux of hard X-ray emission from the compact region around Sgr A^* (r∼ 100 pc). We propose that this emission is a consequence of a special transient accretion process when a part of captured star obtains an additional angular momentum. As a result a flux of subrelativistic protons is ejected from the Galactic black hole, which heats up the background plasma in the Galactic center up to temperature about 6-10 keV and produces by inverse bremsstrahlung a flux of non-thermal X-ray emission in the energy range above 10 keV.

Original language	English
Journal	Proceedings of Science
State	Published - 2008
Event	7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, INTEGRAL 2008 - Copenhagen, Denmark Duration: 8 Sep 2008 → 11 Sep 2008

Cite this

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title = "Origin of thermal and non-thermal hard X-ray emission from the Galactic center",

abstract = "We analyse new results of CHANDRA and SUZAKU which found a flux of hard X-ray emission from the compact region around Sgr A* (r∼ 100 pc). We propose that this emission is a consequence of a special transient accretion process when a part of captured star obtains an additional angular momentum. As a result a flux of subrelativistic protons is ejected from the Galactic black hole, which heats up the background plasma in the Galactic center up to temperature about 6-10 keV and produces by inverse bremsstrahlung a flux of non-thermal X-ray emission in the energy range above 10 keV.",

author = "Dogiel, {V. A.} and Cheng, {K. S.} and Chernyshov, {D. O.} and H. Inoue and Ko, {C. M.} and M. Kokubun and Y. Maeda and K. Mitsuda and Yamasaki, {N. Y.}",

year = "2008",

language = "???core.languages.en_GB???",

journal = "Proceedings of Science",

issn = "1824-8039",

note = "7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, INTEGRAL 2008 ; Conference date: 08-09-2008 Through 11-09-2008",

}

TY - JOUR

T1 - Origin of thermal and non-thermal hard X-ray emission from the Galactic center

AU - Dogiel, V. A.

AU - Cheng, K. S.

AU - Chernyshov, D. O.

AU - Inoue, H.

AU - Ko, C. M.

AU - Kokubun, M.

AU - Maeda, Y.

AU - Mitsuda, K.

AU - Yamasaki, N. Y.

PY - 2008

Y1 - 2008

N2 - We analyse new results of CHANDRA and SUZAKU which found a flux of hard X-ray emission from the compact region around Sgr A* (r∼ 100 pc). We propose that this emission is a consequence of a special transient accretion process when a part of captured star obtains an additional angular momentum. As a result a flux of subrelativistic protons is ejected from the Galactic black hole, which heats up the background plasma in the Galactic center up to temperature about 6-10 keV and produces by inverse bremsstrahlung a flux of non-thermal X-ray emission in the energy range above 10 keV.

AB - We analyse new results of CHANDRA and SUZAKU which found a flux of hard X-ray emission from the compact region around Sgr A* (r∼ 100 pc). We propose that this emission is a consequence of a special transient accretion process when a part of captured star obtains an additional angular momentum. As a result a flux of subrelativistic protons is ejected from the Galactic black hole, which heats up the background plasma in the Galactic center up to temperature about 6-10 keV and produces by inverse bremsstrahlung a flux of non-thermal X-ray emission in the energy range above 10 keV.

UR - http://www.scopus.com/inward/record.url?scp=84883643075&partnerID=8YFLogxK

M3 - 會議論文

AN - SCOPUS:84883643075

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, INTEGRAL 2008

Y2 - 8 September 2008 through 11 September 2008

ER -

Origin of thermal and non-thermal hard X-ray emission from the Galactic center

Abstract

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