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SUMMARY:Little Red Dots from Primordial Black Holes
DTSTART;VALUE=DATE-TIME:20261028T165500Z
DTEND;VALUE=DATE-TIME:20261028T170500Z
DTSTAMP;VALUE=DATE-TIME:20261101T123019Z
UID:indico-contribution-3661@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Dario Lorenzoni (University of Manitoba)\nRecent JWS
 T observations of distant luminous galaxies and compact "little red dots" 
 suggest the existence of early supermassive black holes (SMBHs) with masse
 s $> 10^5\\\,M_\\odot$. Their rapid emergence challenges conventional seed
 ing and growth scenarios\, motivating the question: could these SMBHs be s
 eeded by primordial black holes (PBHs) formed from inflationary perturbati
 ons? \nExplaining such massive seeds requires primordial power spectrum en
 hancements that are stringently constrained by cosmic microwave background
  (CMB) spectral distortions. In this work\, we perform the first comprehen
 sive exploration of the parameter space capable of producing SMBH-mass PBH
  seeds while remaining consistent with CMB $\\mu$-distortion constraints. 
 We adopt a model-independent approach\, and allow for an arbitrary amount 
 of local-type non-Gaussianity. \nOur results delineate the viable region o
 f early Universe parameter space that can reconcile the JWST high-redshift
  SMBH population with inflationary theory\, and highlight that next-genera
 tion CMB spectral distortion telescopes will be capable of testing much of
  this space in the near future.\n\nhttps://nyx.physics.mcgill.ca/event/587
 /contributions/3661/
LOCATION:Online 
URL:https://nyx.physics.mcgill.ca/event/587/contributions/3661/
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