Phenomenology of Gamma-Ray Jets

摘要：

We discuss some phenomenological aspects of γ-ray emitting jets. In particular, we present calculations of the γ-sphere and π-sphere for various target photon fields and employ them to demonstrate how γ-ray observations at very high energies can be used to constraint the Doppler factor of the emitting plasma and the production of VHE neutrinos. We also consider some implications of the rapid TeV variability observed in M87 and the TeV blazars, and propose a model for the very rapid TeV flares observed with HESS and MAGIC in some blazars, that accommodates the relatively small Doppler factors inferred from radio observations. Finally, we briefly discuss the prospects for detecting VHE neutrinos from relativistic jets.

关键词： galaxies active-BL Lacertae objects -galaxies jets-radiation mechanism nonthermal-gamma-rays observations

作者: Amir Levinson

作者单位: School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel

会议类型: 国际会议

会议名称: 紧凑型物体的天体物理学国际会议(International Conference on Astrophysics of Compact Objects)

会议地点: 安徽黄山

会议语种:英文

页码: 281-287

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）