期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 457, 期 1, 页码 1101-1106出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw046
关键词
accretion, accretion discs; magnetic fields; stars: individual: M82 X-2; stars: magnetars; X-rays: binaries
资金
- Russian Science Foundation [14-12-01287]
- Magnus Ehrnrooth Foundation
- Russian Foundation for Basic Research [12-02-97006-r-povolzhea]
- Deutsche Forschungsgemeinschaft (DFG) [WE 1312/48-1]
- Academy of Finland [268740]
- COST Action [MP1304]
We present here the first convincing observational manifestation of a magnetar-like magnetic field in an accreting neutron star in binary system - the first pulsating ultraluminous X-ray source X-2 in the galaxy M82. Using the Chandra X-ray observatory data, we show that the source exhibit the bimodal distribution of the luminosity with two well-defined peaks separated by a factor of 40. This behaviour can be interpreted as the action of the 'propeller regime' of accretion. The onset of the propeller in a 1.37 s pulsar at luminosity of similar to 10(40) erg s(-1) implies the dipole component of the neutron star magnetic field of similar to 10(14) G.
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