A hybrid model of GeV-TeV gamma ray emission from the Galactic center

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 暗物质和空间天文实验室

	A hybrid model of GeV-TeV gamma ray emission from the Galactic center
	Guo, Yi-Qing 1; Yuan, Qiang 1,2; Liu, Cheng 1; Li, Ai-Feng 3
刊名	JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
	2013-06-01
卷号	40 期号:6 页码:11P
ISSN号	0954-3899
通讯作者	Guo, YQ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China. Email: yuanq@ihep.ac.cn
英文摘要	The observations of high energy gamma-ray emission from the Galactic center (GC) by HESS, and recently by Fermi, suggest cosmic ray acceleration in the GC and possibly around the supermassive black hole. In this work we propose a lepton-hadron hybrid model to simultaneously explain the GeV-TeV gamma-ray emission. Both electrons and hadronic cosmic rays were accelerated during the previous activity of the GC. These particles would then diffuse outwards and interact with the interstellar gas and background radiation field. The collisions between hadronic cosmic rays with gas are responsible for the TeV gamma-ray emission detected by HESS. With fast cooling in the strong radiation field, the electrons would cool down and radiate GeV photons through inverse Compton scattering off the soft background photons. This scenario provides a natural explanation for the observed GeV-TeV spectral shape of gamma-ray.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]	Physics
关键词[WOS]	SGR A-ASTERISK ; CENTER HESS SOURCE ; HIGH-ENERGY ; BLACK-HOLE ; SAGITTARIUS-A ; ACCELERATION ; VARIABILITY ; LUMINOSITY ; GALAXY ; FLARE
收录类别	SCI
语种	英语
WOS记录号	WOS:000319189100015
公开日期	2014-01-08
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/9767]
专题	紫金山天文台_暗物质和空间天文实验室
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 3.Shandong Agr Univ, Sch Informat Sci & Engn, Tai An 271018, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Guo, Yi-Qing,Yuan, Qiang,Liu, Cheng,et al. A hybrid model of GeV-TeV gamma ray emission from the Galactic center[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2013,40(6):11P.
APA	Guo, Yi-Qing,Yuan, Qiang,Liu, Cheng,&Li, Ai-Feng.(2013).A hybrid model of GeV-TeV gamma ray emission from the Galactic center.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,40(6),11P.
MLA	Guo, Yi-Qing,et al."A hybrid model of GeV-TeV gamma ray emission from the Galactic center".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 40.6(2013):11P.