Study on Possible GeV Emission from H 1426+428

摘要：

Very high energy photons (～TeV) from blazars are absorbed partly through γγ-annihilation with photons from extragalactic background light (EBL), and con verted to e±pairs. the produced e±pairs is propelling inverseCompton cascade which result in secondary photons production. In such a case, the origin of GeV emis sion include two components both intrinsic component (source component through synchrotron-self Compton) and secondary photons production (external component). We use this model to study the possible GeV emission from H 1426 +428 with different EBL cases. Our results indicate that the GeV emission from external component will dominate over that from (Cii)e source component if intergalactic magnetic field (IGMF) strength is weaker than 10-20G and the intensity in the stellar component of the EBL should be high or medium. We discuss the possibility of the GeV-TeV emission detected by the FGST and possible constraints of the EBL.

关键词： Key words BL Laccertae objects general - BL Lacertae objects individual H1426+428 - radiation mechanisms - non-thermal

作者: C. Y. Yang L. Zhang

作者单位: Deptartment of Physics, Yunnan University, Kunming, China

会议类型: 国际会议

会议名称: The 10th Asian-Pacific Regional International Astronomical Union Meeting(第十届亚洲及太平洋地区天文学大会 APRIM)

会议地点: 昆明

会议语种:英文

页码: 268-269

在线出版日期: 2008-08-03（万方平台首次上网日期，不代表论文的发表时间）