Could 2S 0114+650 be a magnetar?

Details Could 2S 0114+650 be a magnetar? Could 2S 0114+650 be a magnetar?

1999-01-08

arxiv.org/abs/astro-ph/9901084v2

Astronomy and Astrophysics

Astrophysics

7 pages, 1 figure, accepted for publication in ApJL

Scientific paper

10.1086/311904

We investigate the spin evolution of the binary X-ray pulsar 2S 0114+650, which possesses the slowest known spin period of $\sim 2.7$ hours. We argue that, to interpret such long spin period, the magnetic field strength of this pulsar must be initially $\gsim 10^{14}$ G, that is, it was born as a magnetar. Since the pulsar currently has a normal magnetic field $\sim 10^{12}$ G, our results present support for magnetic field decay predicted by the magnetar model.

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