Neutrino heating near hyper-accreting black holes
Hyper-accretion discs around black holes emit copious neutrinos and anti-neutrinos. A fraction of the emitted neutrinos convert to electron-positron plasma above the disc through the annihilation reaction . This process may drive relativistic jets associated with gamma-ray bursts (GRB) explosions. W...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2011-02, Vol.410 (4), p.2302-2308 |
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| container_title | Monthly notices of the Royal Astronomical Society |
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| creator | Zalamea, Ivan Beloborodov, Andrei M. |
| description | Hyper-accretion discs around black holes emit copious neutrinos and anti-neutrinos. A fraction of the emitted neutrinos convert to electron-positron plasma above the disc through the annihilation reaction
. This process may drive relativistic jets associated with gamma-ray bursts (GRB) explosions. We calculate the efficiency of energy deposition by neutrinos. Our calculation is fully relativistic and based on a geodesic-tracing method. We find that the efficiency of neutrino heating is a well-defined function of (i) accretion rate and (ii) spin of the black hole. It is practically independent of the details of neutrino transport in the opaque zone of the disc. The results help identify accretion discs whose neutrino emission can power GRBs. |
| doi_str_mv | 10.1111/j.1365-2966.2010.17600.x |
| format | Article |
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| language | eng |
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| source | Access via Oxford University Press (Open Access Collection); Access via Wiley Online Library |
| subjects | Accreditation accretion accretion discs accretion, accretion discs Astrophysics black hole physics Black holes Gamma rays gamma-ray burst: general magnetic fields Neutrinos relativistic processes |
| title | Neutrino heating near hyper-accreting black holes |
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