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PRODID:UW-Madison-Physics-Events
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UID:UW-Physics-Event-9440
DTSTART:20251106T213000Z
DTEND:20251106T223000Z
DTSTAMP:20260410T212846Z
LAST-MODIFIED:20250930T112925Z
LOCATION:4421 Sterling Hall
SUMMARY:Dynamics and Energetic Transients in Galactic Nuclei\, Astrono
 my Colloquium\, Dr. Itai Linial\, Hubble Fellow at NYU
DESCRIPTION:Centers of galaxies host a variety of dynamical processes\
 , owing to the high density of stars and the presence of a central Sup
 ermassive Black Hole (SMBH). Orbital relaxation brings stellar objects
  into close encounters with the SMBH\, driving a plethora of energetic
  phenomena. These include tidal disruption events\, stellar collisions
 \, the formation of X-ray binaries\, compact object mergers detectable
  by LIGO\, and gravitational wave (GW) inspirals of stellar objects to
 wards the SMBH. In this talk\, I will review some of these processes a
 nd their observable signatures\, with an emphasis on newly discovered 
 classes of repeating flares associated with SMBHs. I will discuss theo
 retical models\, key open questions\, and how these phenomena inform o
 ur understanding of accretion physics\, SMBH growth and evolution\, an
 d the connection to their host galaxies. A powerful array of current a
 nd upcoming time-domain surveys and instruments will uncover thousands
  of high-energy sources in galactic nuclei in the coming years. I will
  highlight how theoretical interpretation of these discoveries can add
 ress fundamental questions in astrophysics\, and conclude with broader
  implications for multi-messenger observations in the era of space-bas
 ed GW detectors such as LISA.
URL:https://www.physics.wisc.edu/events/?id=9440
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