Astronomy and Astrophysics Seminars

Understanding the emission mechanisms and the particle acceleration in astrophysical jets

by Dr. Sunil Chandra (North-West University)

Tuesday, December 13, 2022 from to (Asia/Kolkata)
at Hybrid ( AG66 )
https://tifr-res-in.zoom.us/j/92194334027?pwd=bGVYckZvNVM4OTJhMTI0Wjd0RUlZQT09 Meeting ID: 921 9433 4027 Passcode: 180961
Description
Astrophysical jets are one of the most efficient and natural particle accelerators in the known Universe. The evidence of transient or persistent jets observed in a variety of astrophysical sources starting from protostars to stellar-mass black-holes in X-Ray Binaries (XRBs) to Active Galaxies and GRBs all indicate it to be linked with the phenomenon of accretion onto a gravitating object. The mechanisms of the formation, particle acceleration and collimation of jet have been some of the key questions since the discovery of the first jetted source. Over several decades, our understanding of particle energization has advanced a lot, and a significant portion of my research revolves around some of the questions in this direction. Some of the most striking questions in the field include: what are the scenarios when multiple acceleration mechanisms self-consistently feed to the observed emission? How do the basic shock acceleration mechanisms scale with the length of the jet? What is the relationship between outflows and jets in black-hole objects? In this seminar, I shall be mainly briefing some of my recent works.
Organised by DAA