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Astron. Astrophys. 344, 105-110 (1999)

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Neutron disks around black holes

Sandip K. Chakrabarti and Banibrata Mukhopadhyay

S.N. Bose National Centre for Basic Sciences, JD Block, Salt Lake, Calcutta 700091, India

Received 6 October 1998 / Accepted 13 January 1999

Abstract

We study nucleosynthesis in low accretion rate hot advective flows around black holes. We find that matter is generally photo-dissociated into protons and neutrons inside the disk. These neutrons stay around black holes for longer time because they are not coupled to magnetic fields while the protons accrete into the hole. We find the nature of the resulting neutron disks and estimate the rate at which these disks contaminate the surroundings.

Key words: stars: neutron – nucleosynthesis – black hole physics – accretion, accretion disks

Send offprint requests to: S.K. Chakrabarti (chakraba@boson.bose.res.in)

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© European Southern Observatory (ESO) 1999

Online publication: March 10, 1999
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