The γ-γ Absorption in TeV Flares

摘要：

The rapid variability in high energy band have been observed in many blazars. A value of Lorentz factor up to 50 is necessary in a uniform SSC model to produce TeV gamma-rays without being absorbed in γ - γ pair production, and contradicts the modest apparent speed observed by radio VLBI. We estimate the Lorentz factors under different pair production opacity in uniform SSC model. It is found that the TeV photon absorbtion by pair production is unavoidable in order to mediate the inconsistence of bulk motions obtained by different wavebands, and pair acceleration is needed to keep TeV gamma-ray emission.

关键词： AGN BL Lac objects jet γ-ray absorption homogeneous SSC model

作者: X. Y. Gao J. C. Wang

作者单位: National Astronomical Observatories /Yunnan Observatory, Chinese Academy of Sciences, 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: 218-219

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）