学术报告（20220106）A multi-zone view of blazar's emission

作者：时间：2022-01-04 点击数：

报告题目：	A multi-zone view of blazar's emission
报告人：	柳若愚研究员
报告人单位：	南京大学
报告时间：	2022年1月6日周四晚上18:30-20:30
报告地点：	东七楼427会议室
报告摘要：	Blazars are a class of active galactic nuclei that host relativistic jets oriented close to the observer's line of sight. Non-thermal radiation of relativistic jet is observed at all wavelengths from radio to gamma-rays and shows a spectral energy distribution (SED) with double humps. the most common interpretation is the one-zone leptonic model which assumes that all the jet's emission comes from a single compact spherical region. While this conventional model has made a great success on interpretation of the multi-wavelength SEDs and variabilities of many blazars, there are growing observational evidences implying the existence of more than one radiation zones in a blazar jet. Various theoretical interpretation beyond the conventional one-zone model have been proposed to account specific phenomena but sometimes cannot be synthesized into a coherent picture. Following observational facts of some blazars, we propose a new model in which the jet contains numerous spherical emitting blobs at different locations along the jet. We show that the model can reproduce many features of blazars that are difficult to be explained with the conventional models. The framework of this model is flexible and can be integrated with many other models.
报告人简介：	I obtained my doctoral degree from the University of Heidelberg in 2015. Then I worked as a postdoctoral researcher in Max-Planck-Institute for Nuclear Physics (MPIK) and Deutsches Electron-Synchrotron researcher center (DESY) respectively for two years. In 2019, I returned to China and joined Nanjing University. My research interest mainly focuses on (but not limited to) the astroparticle physics and the high-energy astrophysics, including the origin of high-energy cosmic rays and high-energy neutrinos, the radiation processes in dynamic astrophysical objects such blazars, gamma-ray bursts, pulsar wind nebulae, etc, as well as their roles as the accelerators of cosmic rays.
参会人员：	全体师生

上一篇：学术报告（20220309）活动星系核中心黑洞质量的测量
下一篇：学术报告（20211217）TDE外流与云团作用的射电辐射