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SUMMARY:The possibility of observing primordial black holes with hydrogen 
 subordinate lines
DTSTART;VALUE=DATE-TIME:20261029T061000Z
DTEND;VALUE=DATE-TIME:20261029T063000Z
DTSTAMP;VALUE=DATE-TIME:20261104T222836Z
UID:indico-contribution-6251@cern.ch
DESCRIPTION:Speakers: Yury Eroshenko (INR RAS)\nThe formation of spectral-
 spatial distortions of cosmic microwave background radiation near primordi
 al black holes at redshifts 100-1000 is considered. After hydrogen recombi
 nation\, the radiation from these objects leads to the significant increas
 e in the population of the hydrogen subordinate levels in their surroundin
 g environment. Consequently\, this allows for the observation of a Fraunho
 fer-like absorption spectrum in the cosmic microwave background. These sub
 ordinate hydrogen lines currently lie in the radio wavelength range. Оne 
 should observe circular absorption or emission features around the objects
  with small angular sizes.\n\nhttps://indico.particle.mephi.ru/event/626/c
 ontributions/6251/
LOCATION: Conference Hall 5
URL:https://indico.particle.mephi.ru/event/626/contributions/6251/
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