摘要
考虑了喷流的吸收效应对类星体3C 279多波段能谱的影响.在不含时的同步自康普顿(SSC)模型的基础上,假定喷流中辐射的包受到在其前面的已冷却的包的遮挡,从而使得辐射区的发射可被吸收,这导致能谱的改变.计算表明喷流物质会对类星体辐射区发出的X射线波段的辐射有强烈的吸收,同时喷流物质会以发射线的形式在软X射线和紫外波段将吸收来的能量发射出去.利用这样的模型拟合了类星体3C 279观测到的多波段能谱,并对结果给出了简要的讨论.
The absorption effect on the non-thermal spectrum of 3C 279 in a jet model is considered in this paper. Based on a simple synchrotron self-Compton （SSC） model, it is assumed that a blob of radiation region in the jet is partly kept out by a cooled blob in this jet, and then the emission from the radiation region can be absorbed. This leads to the change of the spectral energy distribution. Our calculation indicates that there is a strong absorption in X-ray band, and the absorbed energy will be emitted in the form of emission lines in ultraviolet and soft X-ray bands. We reproduce the multi-band spectra of 3C 279 by using such a model and give a brief discussion.
出处
《天文学报》
CSCD
北大核心
2010年第4期341-347,共7页
Acta Astronomica Sinica
基金
国家自然科学基金项目(10778702)资助
