Hot and Explosive Hydrogen Burning on Compact Objects

Details Hot and Explosive Hydrogen Burning on Compact Objects Hot and Explosive Hydrogen Burning on Compact Objects

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.4602t&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #46.02; Bulletin of the American Astronomical Society, Vol. 24, p.804

Astronomy and Astrophysics

Astronomy

Scientific paper

The degenerate ignition of accreted hydrogen layers on white dwarfs and neutron stars leads to explosive events like novae and x-ray bursts. But also Thorne-Zytkow objects, until now theoretically postulated neutron star -- main sequence star mergers, would undergo hot hydrogen burning at the bottom of their completely convective envelopes. Temperatures in the range of 10(8) to 1.5-2.0times 10(9) K can be reached and lead to a sequence of rapid proton captures and beta decays (rp-process), which can synthesize nuclei with mass numbers as heavy as 80-100. Such burning sequences were first considered by Wallace and Woosley (1981). This was done with the then still very limited knowledge of the properties of proton-rich unstable nuclei, but a vast amount of information has become available since then. We report details of a study of hot hydrogen burning for a large range of temperature and density conditions. The reaction flow and resulting abundance patterns as well as simplified treatments, when only being interested in energy generation rates, will be discussed. Wallace, R.A., Woosley, S.E. 1981, Ap. J. Suppl. 45, 389

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