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SUMMARY:Ultra-high energy cosmic rays from supermassive black holes: contr
 ibution to   particle flux on the Earth and extragalactic diffuse emission
 .
DTSTART;VALUE=DATE-TIME:20181026T071000Z
DTEND;VALUE=DATE-TIME:20181026T072500Z
DTSTAMP;VALUE=DATE-TIME:20260811T200124Z
UID:indico-contribution-1288@cern.ch
DESCRIPTION:Speakers: Anna Uryson (Lebedev Physical Institute of RAS)\nWe 
 discuss ultra-high energy cosmic rays from supermassive black holes and th
 eir contribution to the particle flux on the Earth along with diffuse gamm
 a-ray emission and cosmogenic neutrino flux. Several processes of particle
  acceleration in supermassive black holes are suggested in literature\, ba
 sed on which various particle injection spectra are considered in this pap
 er.  Cosmic ray spectra on the Earth and the intensity of quanta and neutr
 inos produced by particles in extragalactic space are obtained. The comput
 ational results are compared with the data by Pierre Auger Observatory and
  Telescope Array\, with extragalactic diffuse gamma-ray emission measured 
 by Fermi LAT\, and neutrino flux obtained by IceCube. We conclude that sup
 ermassive black holes are possibly cosmic ray sources which make a negligi
 ble contribution to the particle flux at the Earth but contribute noticeab
 ly to extragalactic diffuse gamma-ray emission. We also conclude that data
  on diffuse gamma-ray emission can be applied to study processes in superm
 assive black holes.\nModel flux of cosmogenic neutrino is several orders l
 ower than IceCube flux.\n\nhttps://indico.particle.mephi.ru/event/22/contr
 ibutions/1288/
LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy hall
URL:https://indico.particle.mephi.ru/event/22/contributions/1288/
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