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SUMMARY:Quasi-periodic oscillations in black hole X-ray binaries
DTSTART;VALUE=DATE-TIME:20260513T060000Z
DTEND;VALUE=DATE-TIME:20260513T070000Z
DTSTAMP;VALUE=DATE-TIME:20260519T023400Z
UID:indico-event-5008@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Wei Wang\n\nHost: Yosuke MizunoJoin Tencent Meeting
 ：https://meeting.tencent.com/dm/60UuiSONUeVvMeeting ID: 900823879 (no pa
 ssword)Abstract:Black hole X-ray binaries (BHXRBs\, also named as microqua
 sars) show strong variability in multi-wavelength observations. In X-rays\
 , the sources show the fast variation features up to millisecond time scal
 es\, with the prominent quasiperiodic oscillations (QPOs) around 1 Hz - te
 ns of Hz in light curves\, however\, physical origin of QPOs is still unce
 rtain. FAST as the largest radio telescope provides the opportunity to stu
 dy fast variability of both radio flux and polarization in microquasars. F
 irstly\, we reported the first evidence of subsecond quasi-periodic oscill
 ations of GRS 1915+105 in the radio band\, providing the direct link betwe
 en QPOs and relativistic jets. In addition\, we also at first time discove
 r the polarization quasiperiodic oscillation in the BH system. The similar
  behaviors of both flux and polarization oscillations in jets\, which shou
 ld provide a new picture on plasma dynamics or instability occurring in re
 lativistic magnetized jets\, which is important to understand the inner en
 gine and magnetic configuration of jets. In near future\, high time resolu
 tion both radio and X-ray monitorings of BHXRBs are expected to discover m
 ore new phenomena in black hole systems.Biography:Prof. Wei Wang now is th
 e professor at Department of Astronomy\, School of Physics and Technology\
 , Wuhan University. He obtained the PhD at the Max-Planck Institute for Ex
 traterrestrial Physics in Germany in 2007. Then he joined in the National 
 Astronomical Observatories\, CAS in Beijing as the Research Professor\, an
 d moved to Wuhan University in 2017. His research interest includes high e
 nergy astrophysics\, black holes\, pulsars\, neutron stars\, supernova and
  supernova remnants\, cosmic rays and nuclear astrophysics. Prof. Wang has
  published more than 120 research papers in international peer-reviewed jo
 urnals\, and is the co-PI and core member of the Chinese astronomical proj
 ects\, like Insight-HXMT\, LHAASO\, FAST\, EP and SVOM. \n\nhttps://indic
 o-tdli.sjtu.edu.cn/event/5008/
LOCATION:Tsung-Dao Lee Institute/S4F-SW - Open Area (Tsung-Dao Lee Institu
 te)
URL:https://indico-tdli.sjtu.edu.cn/event/5008/
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