Journal
ASTRONOMY & ASTROPHYSICS
Volume 368, Issue 2, Pages L5-L7Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20010140
Keywords
accretion; propeller spindown; stars : close binaries; stars : neutron star
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The condition for the subsonic propeller- accretor state transition of neutron stars in wind-fed mass-exchange binary systems is discussed. I show that the value of the break period. at which the neutron star change its state to accretor, presented by Davies & Pringle (1981) is underestimated by a factor of 7.5. The correct value P-br similar or equal to 450 mu (16/21)(30) (M) over dot(15)(-5/6) (M/M-circle dot)(-4/21)s. This result forced us to reconsider some basic conclusions on the efficiency of the propeller spindown mechanism.
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