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UID:33@osups.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20251016T140000
DTEND;TZID=Europe/Paris:20251016T160000
DTSTAMP:20251013T103614Z
URL:https://osups.universite-paris-saclay.fr/calendrier/soutenance-de-thes
 e-de-tristan-bouchet-le-16-octobre-2025-a-14h/
SUMMARY:Soutenance de thèse de Tristan Bouchet le 16 octobre 2025 à 14h
DESCRIPTION:Title: High-energy studies of Microquasars: spectropolarimetry 
 with INTEGRAL and preliminary results from SVOM\n\nPlace: CEA - Orme des M
 erisiers\, building 703 (Ground floor Amphitheater / room 45)\n\nAbstract:
  Black Hole X-ray Binaries are binary systems where a stellar-mass Black H
 ole accretes material from a companion star\, leading to X-ray to gamma-ra
 y emission attributed to heat dissipation in the accretion disk and invers
 e Compton radiation from a corona. Above the typical spectral cut-off of t
 he Compton component\, strong hard X-ray emission was also detected in sev
 eral sources. Known as the hard-tail\, it was interpreted as either non-th
 ermal inverse Compton emission\, or synchrotron emission\, or a mix of bot
 h. These objects are also found to have powerful bipolar jets similarly to
  Quasars\, resulting in the name Microquasar as their scaled down version.
  The hard-tail emission could be linked to these accretion-ejection proces
 ses.\nAlthough challenging to measure properly\, spectro-polarization is a
  critical tool to understand and distinguish the precise emission mechanis
 ms\, as it provides novel diagnosis to constrain parameters related to sou
 rce geometry and magnetic fields. In particular\, the INTEGRAL satellite a
 nd the newly launched French-Chinese SVOM satellite are well fitted to ach
 ieved those goals.\n\nSupervisors: RODRIGUEZ-VACHOUX Jerôme\, LAURENT Phi
 lippe\n\nJury members: MARCOWITH Alexandre\, BOUCHET Laurent\, HANLON Lorr
 aine\, KIERANS Carolyn\, PETRUCCI Pierre-Olivier\, TATISCHEFF Vincent\, CA
 NGEMI Floriane (invitée)\n
CATEGORIES:Soutenances
LOCATION:AIM\, Orme des Merisiers Bât. 709\, Gif sur Yvette\, 91191\, Fran
 ce
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Orme des Merisiers Bât. 70
 9\, Gif sur Yvette\, 91191\, France;X-APPLE-RADIUS=100;X-TITLE=AIM:geo:0,0
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DTSTART:20250330T030000
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