期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 424, 期 1, 页码 L39-L43出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1745-3933.2012.01285.x
关键词
accretion, accretion discs; stars: magnetic field; stars: neutron; X-rays: binaries; X-rays: individual: SXP 1062
资金
- Programme of Presidium of Russian Academy of Sciences [N 21]
- [NSH-1625.2012.2]
The spin behaviour of the neutron star in the newly discovered young Be/X-ray long-period pulsar SXP 1062 is discussed. The star is observed to rotate with the period of 1062 s, and spin down at the rate similar to-2.6 x 10(-12) Hz s(-1). I show that all of the conventional accretion scenarios encounter major difficulties in explaining the rapid spin-down of the pulsar. These difficulties can be, however, avoided within the magnetic accretion scenario in which the neutron star is assumed to accrete from a magnetized wind. The spin-down rate of the pulsar can be explained within this scenario provided the surface magnetic field of the neutron star is B-* similar to 4 x 10(13) G. I show that the age of the pulsar in this case lies in the range (2-4) x 10(4) yr, which is consistent with observations. The spin evolution of the pulsar is briefly discussed.
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