De-excitation C and O lines and the 511 keV annihilation line from Sgr A*

V. A. Dogiel; K. S. Cheng; D. O. Chernyshov; V. Tatischeff; C. M. Ko; W. H. Ip

doi:10.1016/j.newar.2008.06.025

De-excitation C and O lines and the 511 keV annihilation line from Sgr A^*

V. A. Dogiel, K. S. Cheng, D. O. Chernyshov, V. Tatischeff, C. M. Ko, W. H. Ip

天文研究所

研究成果: 雜誌貢獻 › 短篇回顧評介論文 › 同行評審

4 引文斯高帕斯（Scopus）

摘要

We present a model of the observed annihilation emission from the Galactic center. From our estimations it follows that this region should emit also a flux of de-excitation C and O lines at the level ≤10^-5 ph cm^-2 s^-1. From restrictions based on the observed >100 MeV gamma-ray flux from the Galactic center, ∼2 × 10^-5 ph cm^-2 s^-1, we predict that the calculated gamma-ray line flux below 8 MeV is about 2.5 × 10^{- 5} ph cm^{- 2} s^{- 1}. A specific line is the one at 1.809 MeV from radioactivity of ²⁶Al. The predicted quasi-stationary flux of the ²⁶Al 1.809 MeV line from the 1 ° × 1 ° central region is ≤ 10^{- 6} ph cm^{- 2} s^{- 1}.

原文	???core.languages.en_GB???
頁（從 - 到）	460-462
頁數	3
期刊	New Astronomy Reviews
卷	52
發行號	7-10
DOIs	https://doi.org/10.1016/j.newar.2008.06.025
出版狀態	已出版 - 10月 2008

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10.1016/j.newar.2008.06.025

引用此

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title = "De-excitation C and O lines and the 511 keV annihilation line from Sgr A*",

abstract = "We present a model of the observed annihilation emission from the Galactic center. From our estimations it follows that this region should emit also a flux of de-excitation C and O lines at the level ≤10-5 ph cm-2 s-1. From restrictions based on the observed >100 MeV gamma-ray flux from the Galactic center, ∼2 × 10-5 ph cm-2 s-1, we predict that the calculated gamma-ray line flux below 8 MeV is about 2.5 × 10- 5 ph cm- 2 s- 1. A specific line is the one at 1.809 MeV from radioactivity of 26Al. The predicted quasi-stationary flux of the 26Al 1.809 MeV line from the 1 ° × 1 ° central region is ≤ 10- 6 ph cm- 2 s- 1.",

keywords = "511 keV line, Black hole, De-excitation lines, Secondary positrons",

author = "Dogiel, {V. A.} and Cheng, {K. S.} and Chernyshov, {D. O.} and V. Tatischeff and Ko, {C. M.} and Ip, {W. H.}",

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volume = "52",

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TY - JOUR

T1 - De-excitation C and O lines and the 511 keV annihilation line from Sgr A*

AU - Dogiel, V. A.

AU - Cheng, K. S.

AU - Chernyshov, D. O.

AU - Tatischeff, V.

AU - Ko, C. M.

AU - Ip, W. H.

PY - 2008/10

Y1 - 2008/10

N2 - We present a model of the observed annihilation emission from the Galactic center. From our estimations it follows that this region should emit also a flux of de-excitation C and O lines at the level ≤10-5 ph cm-2 s-1. From restrictions based on the observed >100 MeV gamma-ray flux from the Galactic center, ∼2 × 10-5 ph cm-2 s-1, we predict that the calculated gamma-ray line flux below 8 MeV is about 2.5 × 10- 5 ph cm- 2 s- 1. A specific line is the one at 1.809 MeV from radioactivity of 26Al. The predicted quasi-stationary flux of the 26Al 1.809 MeV line from the 1 ° × 1 ° central region is ≤ 10- 6 ph cm- 2 s- 1.

AB - We present a model of the observed annihilation emission from the Galactic center. From our estimations it follows that this region should emit also a flux of de-excitation C and O lines at the level ≤10-5 ph cm-2 s-1. From restrictions based on the observed >100 MeV gamma-ray flux from the Galactic center, ∼2 × 10-5 ph cm-2 s-1, we predict that the calculated gamma-ray line flux below 8 MeV is about 2.5 × 10- 5 ph cm- 2 s- 1. A specific line is the one at 1.809 MeV from radioactivity of 26Al. The predicted quasi-stationary flux of the 26Al 1.809 MeV line from the 1 ° × 1 ° central region is ≤ 10- 6 ph cm- 2 s- 1.

KW - 511 keV line

KW - Black hole

KW - De-excitation lines

KW - Secondary positrons

UR - http://www.scopus.com/inward/record.url?scp=51849130958&partnerID=8YFLogxK

U2 - 10.1016/j.newar.2008.06.025

DO - 10.1016/j.newar.2008.06.025

M3 - 短篇回顧評介論文

AN - SCOPUS:51849130958

SN - 1387-6473

VL - 52

SP - 460

EP - 462

JO - New Astronomy Reviews

JF - New Astronomy Reviews

IS - 7-10

ER -

De-excitation C and O lines and the 511 keV annihilation line from Sgr A*

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De-excitation C and O lines and the 511 keV annihilation line from Sgr A^*