Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acppb..29.3503t&link_type=abstract
Acta Phys. Pol., B, Vol. 29, No. 11, p. 3503 - 3513
Astronomy and Astrophysics
Astrophysics
Neutron Stars: Nucleosynthesis, Neutron Stars: Nuclear Burning, Neutron Stars: Supernovae
Scientific paper
The authors give an overview of explosive burning and the role which neutron and/or proton separation energies play. They focus then on the rapid neutron capture process (r-process) which encounters unstable nuclei with neutron separation energies in the range 1 - 4 MeV, and the rapid proton capture process (rp-process), operating close to the proton drip-line. The site of the rp-process is related to hydrogen accreting neutron stars in binary stellar systems. Explosive H-burning produces nuclei as heavy as A = 100, powering events observable as X-ray bursts. The r-process abundances witness nuclear structure far from beta-stability as well as the conditions in the appropriate astrophysical environment. But there is a remaining lack in the full understanding of its astrophysical origin, ranging from the high entropy neutrino wind, blown from hot neutron star surfaces after a supernova explosion, to low entropy "cold decompresssion" of neutron star matter ejected in mergers of binary neutron star systems.
Freiburghaus Ch.
Kratz Karl Ludwig
Pfeiffer Bernd
Rauscher Thomas
Rembges F.
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