Low luminosity spherical accretion onto neutron stars: Self-consistent models

Details Low luminosity spherical accretion onto neutron stars: Self-consistent models Low luminosity spherical accretion onto neutron stars: Self-consistent models

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..431..413w&link_type=abstract

Accretion processes in astrophysical systems: Some like it hot! - eigth astrophysics conference. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astrophysics

2

Neutron Stars, Accretion And Accretion Disks

Scientific paper

Highly sub-Eddington accretion may occur among some of the old isolated neutron stars which have spun down sufficiently to start accreting interstellar gas. Using an iterative scheme involving the MAPPINGS II code to couple the accretion dynamics with nonequilibrium atomic heating and ionization, we find, for both blackbody and more realistic ionizing spectra, that steady accretion is not possible for the typical accretion rates (Ṁ~1011 g s-1) expected of accretion from the interstellar medium (ISM). In this case, variability on timescales ~ few years could be expected.

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