Physics
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988stin...8828849v&link_type=abstract
Unknown
Physics
Angular Momentum, Binary Stars, Mass Flow, Mass Transfer, Stellar Mass, Neutron Stars, Pulsars, Star Formation, White Dwarf Stars
Scientific paper
The onset of dynamical mass transfer instabilities due to angular momentum flows in close binaries is studied, taking into account the finite growth time of the instability. Results are applied to the formation of single millisecond pulsars in the galactic disk, showing that mass transfer from a white dwarf onto a neutron star is dynamically unstable for white dwarf masses less than 5 solar masses. This lower limit for unstable mass transfer is larger than that found previously. A further application is the formation of long-period and ultrashort-period white-dwarf/neutron-star binaries, via mass transfer from a giant to a neutron star. Incipient mass transfer from a 0.8 solar mass giant to a 1.2 solar mass neutron star occurs on a sufficiently slow time scale for an accretion disk to form. A scenario wherein an episode of unstable mass transfer, triggered by a passing field star, can lead to the formation of an isolated millisecond pulsar in a globular cluster is considered.
Rappaport Saul
Verbunt Frank
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