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RX J0720.4--3125 as a Possible Example of the Magnetic Field Decay of Neutron Stars | D. Yu. Konenkov
; S. B. Popov
; | Date: |
29 Jul 1997 | Journal: | Astronomy Letters (English translation of Pisma v Astronomicheskii Zhurnal), Vol. 23, p. 569-575, 1997 (August) | Subject: | astro-ph | Affiliation: | A.F.Ioffe Institute of Physics and Technology) and S. B. Popov (Sternberg Astronomical Institute, Moscow State University | Abstract: | We studied possible evolution of the rotational period and the magnetic field of the X-ray source RX J0720.4-3125 assuming this source to be an isolated neutron star accreting interstellar medium. Magnetic field of the source is estimated to be $10^6 - 10^9$ G, and it is difficult to explain observed rotational period 8.38 s without invoking hypothesis of the magnetic field decay. We used the model of ohmic decay of the crustal magnetic field. The estimates of accretion rate ($10^{-14} - 10^{-16} M_odot/yr$), velocity of the source relative to interstellar medium ($10 - 50 $ km/s), neutron star age ($2cdot 10^9 - 10^{10}$ yrs) are obtained. | Source: | arXiv, astro-ph/9707318 | Services: | Forum | Review | PDF | Favorites |
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