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SUMMARY:Black holes in star clusters: Gravitational waves\, dormant binari
 es\, and black hole growth
DTSTART:20261020T203000Z
DTEND:20261020T223000Z
DTSTAMP:20261106T075500Z
UID:indico-event-372@eventreg.ads.ttu.edu
DESCRIPTION:Speakers: Daniel Marín Pina (Universität Heidelberg)\n\nStar
  clusters pack up to a million stars into a region only a few light-years 
 across. Their dense cores host a population of black holes\, remnants of m
 assive stars\, that move on chaotic orbits and repeatedly undergo close in
 teractions. These encounters make clusters natural factories for some of t
 he most extreme objects in the Universe. Here\, I will introduce\, from a 
 modeling perspective\, what effects cluster dynamics have on the populatio
 n of black holes. First\, I will explain how close encounters pair black h
 oles into tight binaries that spiral in and merge\, producing the gravitat
 ional waves observed by LIGO. Then\, I will characterize the formation of 
 dormant black holes: wide black hole-star binaries that emit no radiation 
 as they are not significantly accreting mass from their companion star. Th
 ese are detected by the wobbling motion of the star by e.g.\, Gaia\, a spa
 ce telescope that has mapped the positions and motions of billions of star
 s in our Galaxy. Finally\, I will show how black holes in clusters can rep
 eatedly merge\, building intermediate-mass black holes\, the missing link 
 between the black holes born from stars and the supermassive giants at the
  centers of galaxies.\n\nhttps://eventreg.ads.ttu.edu/event/372/
LOCATION:234 (Science)
URL:https://eventreg.ads.ttu.edu/event/372/
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