Lunch talk on Jun. 9, 2025

Traversing the Outflow Regions of Black Holes Using X-rays and Radios

Speaker: Zuobin Zhang (University of Oxford)

Venue: Video Conference

Time: 16:00 PM, Monday, Jun. 9, 2025

Abstract: 

Relativistic jets and disk winds are among the most powerful manifestations of accretion processes around black holes, yet their physical origins and mutual interactions remain poorly understood. In this talk, I’ll be presenting my research on black hole outflows—specifically, how jets and disk winds are launched from accreting stellar-mass black holes. These outflows are key to understanding how black holes interact with their surroundings, but there are still many open questions: for example, when do jets appear, what role the corona plays, and whether winds and jets can exist at the same time. To address these, I’m using coordinated X-ray and radio observations of black hole X-ray binaries. The goal is to track how different types of outflows—jets, coronae, and winds—evolve throughout an outburst, and to test how they connect with each other. I’ll show results from NICER, HXMT, MeerKAT and VLA, and discuss new insights into the physical conditions that drive jet production and wind suppression.

Report PPT:  SWIFAR_Zuobin Zhang.pdf