Signs of magnetic accretion in young Be/X-ray pulsar SXP 1062

Abstract

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 1062s, and spin-down at the rate ~ - 2.6 \times 10^{-12} Hz s^{-1}. I show that all of the conventional accretion scenarios encounter major difficulties 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_* ~ 4 \times 10^{13} G. I show that the age of the pulsar in this case lies in the rage (2-4) \times 10^4 yr, which is consistent with observations. The spin evolution of the pulsar is briefly discussed.

accepted for publication in MNRAS

References in corpus (2)

• Burst Fluence Distributions of Soft Gamma Repeaters 1806-20 and 1900+14 in the RXTE PCA era
• Signs of Magnetic Accretion in the X-ray Pulsar Binary GX 301-2

Cited by in corpus (8)

• Discovery of a Glitch in the Accretion Powered Pulsar SXP 1062
• Targeted search for young radio pulsars in the SMC: Discovery of two new pulsars
• A new look at the origin of the 6.67\,hr period X-ray pulsar 1E~161348-5055
• Deep Chandra Survey of the Small Magellanic Cloud. II. Timing Analysis of X-ray Pulsars
• The unusual behaviour of the young X-ray pulsar SXP 1062 during the 2019 outburst
• A scenario of the formation of isolated X-ray pulsars with anomalously long period
• Monte-Carlo simulations on possible collimation effects of outflows to fan-beamed emission of ultraluminous accreting X-ray pulsars
• Accretion into black hole, and formation of magnetically arrested accretion disks