Could 2S 0114+650 be a magnetar?

2); Amsterdam; China; (2) Astronomical Institute; E. P. J. van den Heuvel (2) ((1) Department of Astronomy; Nanjing; Nanjing University; the Netherlands); University of Amsterdam; X.-D. Li (1

arxiv: astro-ph/9901084 · v2 · submitted 1999-01-08 · 🌌 astro-ph

Could 2S 0114+650 be a magnetar?

X.-D. Li (1 , 2) , E. P. J. van den Heuvel (2) ((1) Department of Astronomy , Nanjing University , Nanjing , China; (2) Astronomical Institute , University of Amsterdam , Amsterdam

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the Netherlands)

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keywords fieldmagnetarmagneticpulsarspinperiodarguebinary

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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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Could 2S 0114+650 be a magnetar?

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