Physics – Nuclear Physics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dnp2wb001c&link_type=abstract
American Physical Society, Division of Nuclear Physics Fall Meeting, October 30 - November 1, 2003, Tucson, Arizona, MEETING ID:
Physics
Nuclear Physics
Scientific paper
I review recent advances in our understanding of thermonuclear flashes on accreting neutron stars, concentrating on how well theory confronts observations of Type I X-ray bursts. I review recent progress in modelling Type I bursts, in particular multizone calculations incorporating large nuclear reaction networks, and discuss what comparisons with observations can tell us about the accretion rate onto the star, metallicity of the accreted matter, and the neutron star itself. I then discuss the spectacular "superbursts" discovered by long term monitoring programs. These very energetic events (1000 times the energy and duration of normal Type I bursts) fit naturally into the theoretical picture as unstable thermonuclear ignition of a thick layer of carbon and heavy rp process ashes, providing an important new window on the nuclear processes in, and properties of, the neutron star's outer layers.
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