Astronomy and Astrophysics – Astronomy
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf..359d&link_type=abstract
In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 359-362 (SEE N94-22624 05-75)
Astronomy and Astrophysics
Astronomy
Accretion Disks, Astronomy, Black Holes (Astronomy), Dense Plasmas, Galactic Nuclei, Space Plasmas, Companion Stars, Gamma Ray Spectra, Novae, Positrons, Stellar Mass Accretion
Scientific paper
Accretion disks surrounding a compact object, which are able to produce a pair plasma, are investigated. The cooling down of positrons and their annihilation sites, in the light of the line observations, are evaluated. The model consists ofa black hole system, with an important accretion rate, fuelled by a companion star. The purpose is to emphasize that a search of features, mainly at 511 keV backscattered energies, as well as their relative intensities and timing evolution, might be a powerful tool in black hole searches. It is shown that backscattered features could provide a new set of signatures for black hole candidates.
Durouchoux Philippe
Wallyn Pierre
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