Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-05-23
Astron.Astrophys. 423 (2004) 1023-1027
Astronomy and Astrophysics
Astrophysics
5 pages, 1 figure, accepted for publication in A&A
Scientific paper
10.1051/0004-6361:20041132
The appearance of subsonic propellers situated in a strong wind is discussed. We show that it is similar to the appearance of anomalous X-ray pulsars (AXPs) provided the mass and the magnetic moment of neutron stars are 1.4 solar masses, and 2E+30 G cm^3, respectively, and the strength of the wind is M_c = 3E+17 g/s. Under these conditions, the spin periods of subsonic propellers are limited within the range of 5-15 s, and the expected spin-down rates are close to 7E-11 s/s. The mass accretion rate onto the stellar surface is limited to the rate of plasma penetration into its magnetosphere at the boundary. As this process is governed by the reconnection of the field lines, the accretion rate onto the stellar surface constitutes 1-2% of M_c. In this case the X-ray luminosity of the objects under consideration can be evaluated as 4E+35 erg/s. The model predicts the existence of at least two spatially separated sources of the X-ray emission: hot spots at the stellar surface, and the hot atmosphere surrounding the magnetosphere of the star. The ages of the subsonic propellers under the conditions of interest are limited to 10^5 yr.
Choi Chul-Sung
Ikhsanov Nazar R.
No associations
LandOfFree
Subsonic propellers in a strong wind as anomalous X-ray pulsars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Subsonic propellers in a strong wind as anomalous X-ray pulsars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subsonic propellers in a strong wind as anomalous X-ray pulsars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-186150