CNO destruction by spallation and type I X-ray bursts

Details CNO destruction by spallation and type I X-ray bursts CNO destruction by spallation and type I X-ray bursts

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...388..555t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 388, April 1, 1992, p. 555-560. Research supported by University of Delawar

Astronomy and Astrophysics

Astrophysics

2

Carbon Isotopes, Neutron Stars, Nitrogen, Nuclear Fusion, Oxygen, X Ray Sources, Accretion Disks, Boundary Conditions, Exosat Satellite, Stellar Models

Scientific paper

Recent work on the surface boundary conditions of accreting neutron stars indicates that appreciable amounts of CNO elements can be destroyed by spallation. Previous authors assume an accretion of near-solar-abundance material which is not altered by boundary effects. Steady state models of accreting neutron stars are constructed assuming all but traces of metals are destroyed due to spallation in the surface layers. Models with solar accretion for comparison are also constructed. The models are compared with Exosat observations of 4U/MXB 1636 - 53. It is found that the simplifications introduced by assuming CNO destruction does not bring theory closer to describing what is observed.

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