Volume 368, Number 2, March III 2001
|Page(s)||L5 - L7|
|Published online||15 March 2001|
On the duration of the subsonic propeller state of neutron stars in wind-fed mass-exchange close binary systems
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
2 Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, Pulkovo 65-1, 196140 Saint-Petersburg, Russia
Accepted: 25 January 2001
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 ([CITE]) is underestimated by a factor of 7.5. The correct value is s. This result forced us to reconsider some basic conclusions on the efficiency of the propeller spindown mechanism.
Key words: accretion / propeller spindown / stars: close binaries / stars: neutron star
© ESO, 2001
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