Strong GeV emission accompanying TeV blazar H1426+428

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 宇宙伽马暴、中子星及相关物理研究团组

	Strong GeV emission accompanying TeV blazar H1426+428
	Fan, YZ; Dai, ZG ; Wei, DA
刊名	ASTRONOMY & ASTROPHYSICS
	2004-02-01
卷号	415 期号:2 页码:483-486
关键词	BL Lacertae objects : general BL Lacertae objects : individual : H1426+428 cosmology : diffuse radiation gamma rays : theory
ISSN号	0004-6361
英文摘要	For High frequency BL Lac objects (HBLs) like H 1426+428, a significant fraction of their TeV gamma-rays emitted are likely to be absorbed in interactions with the diffuse IR background, yielding e(+/-) pairs. The resulting e(+/-) pairs generate one hitherto undiscovered GeV emission by inverse Compton scattering with the cosmic microwave background photons (CMBPs). We study such emission by taking the 1998-2000 CAT data, the reanalyzed 1999 & 2000 HEGRA data and the corresponding intrinsic spectra proposed by Aharonian et al. (2003a). We numerically calculate the scattered photon spectra for different intergalactic magnetic field (IGMF) strengths. If the IGMF is about 10(-18) G or weaker, there comes very strong GeV emission, whose flux is far above the detection sensitivity of the upcoming satellite GLAST! Considered its relatively high redshift (z=0.129), the detected GeV emission in turn provides us a valuable chance to calibrate the poorly known spectral energy distribution of the intergalactic infrared background, or provides us some reliable constraints on the poorly known IGMF strength.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	VERY-HIGH-ENERGY ; INTERGALACTIC MAGNETIC-FIELDS ; BACKGROUND-RADIATION FIELDS ; GAMMA-RAY BURSTS ; MARKARIAN 501 ; SPECTRUM ; ABSORPTION ; PHOTONS ; HEGRA ; TELESCOPE
收录类别	SCI
语种	英语
WOS记录号	WOS:000188936100015
公开日期	2012-12-22
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/7753]
专题	紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组
作者单位	1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Fan, YZ,Dai, ZG,Wei, DA. Strong GeV emission accompanying TeV blazar H1426+428[J]. ASTRONOMY & ASTROPHYSICS,2004,415(2):483-486.
APA	Fan, YZ,Dai, ZG,&Wei, DA.(2004).Strong GeV emission accompanying TeV blazar H1426+428.ASTRONOMY & ASTROPHYSICS,415(2),483-486.
MLA	Fan, YZ,et al."Strong GeV emission accompanying TeV blazar H1426+428".ASTRONOMY & ASTROPHYSICS 415.2(2004):483-486.