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Semantic Scholar Open Access 2014 3 sitasi

ASTRO-H White Paper - Plasma Diagnostic and Dynamics of the Galactic Center Region

Tadayuki Takahashi K. Mitsuda Rich Kelley F. Aharonian Hiroki Akamatsu +70 lainnya
Lihat Sumber

Abstrak

The most characteristic high-energy phenomena in the Galactic center (GC) region is the presence of strong K-shell emission lines from highly ionized Si, S, Ar, Ca, Fe and Ni, which form the Galactic Center X-ray Emission (GCXE). These multiple lines suggest that the GCXE is composed of at least two plasmas with temperatures of ~1 and ~7 keV. The GCXE also exhibits the K-shell lines from neutral Si, S, Ar, Ca, Fe and Ni atoms. A debatable issue is the origin of the GCXE plasma; whether it is a diffuse plasma or integrated emission of many unresolved point sources such as cataclysmic variables and active binaries. Detailed spectroscopy for these lines may provide a reliable picture of the GCXE plasma. The origin of the K-shell lines from neutral atoms is most likely the fluorescence by X-rays from a putative past flare of Sgr A*. Therefore ASTRO-H may provide unprecedented data for the past light curve of Sgr A*. All these lines may provide key information for the dynamics of the GCXE, using possible Doppler shift and/or line broadening. This paper overviews these line features and the previous interpretation of their origin. We propose extended or revised science with the ASTRO-H observations of some select objects in the GC region.

Topik & Kata Kunci

Physics

Penulis (75)

T

Tadayuki Takahashi

K

K. Mitsuda

R

Rich Kelley

F

F. Aharonian

H

Hiroki Akamatsu

F

F. Akimoto

S

Steve Allen

N

N. Anabuki

L

Lorella Angelini

K

Keith Arnaud

M

M. Audard

H

H. Awaki

A

A. Bamba

M

M. Bautz

R

R. Blandford

L

L. Brenneman

G

G. Brown

E

E. Cackett

M

M. Chernyakova

M

M. Chiao

E

E. Costantini

J

J. Plaa

J

J. D. Herder

C

C. Done

T

T. Dotani

K

K. Ebisawa

M

M. Eckart

T

T. Enoto

Y

Y. Ezoe

A

A. Fabian

C

C. Ferrigno

A

Adam R. Foster

R

R. Fujimoto

Y

Y. Fukazawa

S

S. Funk

A

A. Furuzawa

M

M. Galeazzi

L

L. Gallo

P

P. Gandhi

M

M. Guainazzi

Y

Y. Haba

K

Kenji Hamaguchi

I

I. Hatsukade

T

T. Hayashi

K

Katsuhiro Hayashi

K

K. Hayashida

J

J. Hiraga

A

A. Hornschemeier

R

R. Iizuka

Y

Y. Inoue

H

Hajime Inoue

K

K. Ishibashi

M

M. Ishida

K

K. Ishikawa

Y

Y. Ishisaki

N

N. Iyomoto

J

J. Kaastra

T

T. Kallman

T

T. Kamae

J

J. Kataoka

S

S. Katsuda

J

J. Katsuta

M

M. Kawaharada

D

D. Khangulyan

C

C. Kilbourne

M

Masashi Kimura

S

S. Kitamoto

T

T. Kitayama

T

T. Kohmura

M

M. Kokubun

S

S. Konami

H

H. Krimm

H

H. Kunieda

S

S. Paltani

T

T. Tamura

Format Sitasi

APA MLA BibTeX
Takahashi, T., Mitsuda, K., Kelley, R., Aharonian, F., Akamatsu, H., Akimoto, F. et al. (2014). ASTRO-H White Paper - Plasma Diagnostic and Dynamics of the Galactic Center Region. https://www.semanticscholar.org/paper/9af04acd0e6c057466c43b90acb5d5ca59396da6

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Informasi Jurnal
Tahun Terbit
2014
Bahasa
en
Total Sitasi
3×
Sumber Database
Semantic Scholar
Akses
Open Access ✓