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SUMMARY:Reverberation lags viewed in hard X-rays from an accreting stellar
 -mass black hole
DTSTART;VALUE=DATE-TIME:20260729T060000Z
DTEND;VALUE=DATE-TIME:20260729T070000Z
DTSTAMP;VALUE=DATE-TIME:20260813T163100Z
UID:indico-event-5211@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Bei You(游贝) (Wuhan University)\n\nHost: Ying ZuJ
 oin Tencent Meeting: https://meeting.tencent.com/dm/qidPMHeUvjxaMeeting ID
 : 811331910 (no password)Abstract:In a BHXRB\, the X-ray emitting region i
 s far too small to be directly imaged\, but rapid variability of the X-ray
  signal can be used to infer the geometry by measuring time lags caused by
  material propagating towards the black hole and by coronal X-rays reflect
 ing off the disk to imprint a reverberation lag. In this talk\, I will int
 roduce our recent theoretical/observational studies on the X-ray fast vari
 ability with HXMT observations. On short-timecale\, we report on the first
  detection of the Compton hump reverberation feature from an X-ray binary\
 , achieved by measuring lags in the broad energy range of 1-150 keV\; On l
 ong-timescale\, the lag measurements up to the highest energy to date reve
 al that this lag evolves dramatically on timescales of days. These discove
 ries helps us mapping the accretion flow at the very beginning of the outb
 urst and its evolution.Biography:Dr. Bei You is a professor at the School 
 of Physics and Technology at Wuhan University and a recipient of the Xiaom
 i Young Scholar Award. He earned his PhD from Shanghai Observatory in 2014
 . After that\, he worked as a postdoc at the Nicolaus Copernicus Astronomi
 cal Centre (NCAC) in Poland from 2014 to 2017. In October 2017\, he began 
 working at Wuhan University. His long-term research focuses on black hole 
 accretion and jets\, primarily studying energy spectra and temporal variat
 ions during outbursts in black hole X-ray binaries. He has published paper
 s in international journals such as Science and Nature Communications\, un
 covering the physical processes of black hole accretion and magnetic field
  transport.\n\nhttps://indico-tdli.sjtu.edu.cn/event/5211/
URL:https://indico-tdli.sjtu.edu.cn/event/5211/
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