报告题目： Accretion and outflows in the Gamma Ray Bursts central engines
报 告 人： Agnieszka Janiuk（Polish Academy of Sciences）
报告时间： 2025年9月30日（周二）上午10：00
报告地点： 物理科学与技术学院新楼D-505多功能厅
报告摘要：
Gamma Ray Bursts (GRBs) are powered by transient jets launched by a central engine. The plausible model of such engine is based on a black hole surrounded by the magnetized accretion disk. This model explains various phenomenology of GRBs, such as its energetics, durations, and jet structure. In addition, the neutrino-cooled winds from the central engine are found to be sites of r-process nucleosynthesis. In this talk, I will present results of numerical simulations performed by our group at Center for Theoretical Physics in Warsaw. Our models address formation of the GRB engine through the compact binary mergers, as well as collapsar scenarios. I will discuss the broad band emissions of GRBs jets and disk outflows. The prospects for multimessenger astrophysical phenomena will also be briefly presented.
报告人简介：
Prof. Agnieszka Janiuk – Polish astrophysicist, Professor at the Center for Theoretical Physics of the Polish Academy of Sciences. Member of the National Council for Particle Astrophysics, Polish Astronomical Society, and the Polish Society of Relativity. Completed PhD at the Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences in Warsaw, in 2003. Worked as a postdoctoral fellow at the University of Nevada, Las Vegas. Later as tenure-track at the Nicolaus Copernicus Astronomical Center and simultaneously (2010-2011) as an assistant professor at the Center for Theoretical Physics of the Polish Academy of Sciences. Since November 2011, he has been appointed a professor at the Centre for Theoretical Physics of the Polish Academy of Sciences Received habilitation (tenure) in physical sciences in astronomy in 2011, and the title of professor in the field of exact and natural sciences from the President of the Republic of Poland in January 2021. Author of over 180 scientific publications. Her research interests include: astrophysics of accretion disks in binary systems, black holes in the Milky Way, active galactic nuclei and quasars, and the origin of gamma-ray bursts.
邀 请 人：游贝教授
