We confront theoretical models for the rotational, magnetic, and thermal evolution of an ultramagnetized neutron star, or magnetar, with available data on the anomalous X-ray pulsars (AXPs). We argue that, if the AXPs are interpreted as magnetars, their clustering of spin periods between 6 and 12 s (observed at present in this class of objects), their period derivatives, their thermal X-ray luminosities, and the association of two of them with young supernova remnants can only be understood globally if the magnetic field in magnetars decays significantly on a timescale of the order of 10(4) yr.

We confront theoretical models for the rotational, magnetic, and thermal evolution of an ultramagnetized neutron star, or magnetar, with available data on the anomalous X-ray pulsars (AXPs). We argue that, if the AXPs are interpreted as magnetars, their clustering of spin periods between 6 and 12 s (observed at present in this class of objects), their period derivatives, their thermal X-ray luminosities, and the association of two of them with young supernova remnants can only be understood globally if the magnetic field in magnetars decays significantly on a timescale of the order of 104 yr.

Colpi, M., Geppert, U., Page, D. (2000). Period clustering of the anomalous X-ray pulsars and magnetic field decay in magnetars. THE ASTROPHYSICAL JOURNAL, 529(1), L29-L32 [10.1086/312448].

Period clustering of the anomalous X-ray pulsars and magnetic field decay in magnetars

COLPI, MONICA;
2000

Abstract

We confront theoretical models for the rotational, magnetic, and thermal evolution of an ultramagnetized neutron star, or magnetar, with available data on the anomalous X-ray pulsars (AXPs). We argue that, if the AXPs are interpreted as magnetars, their clustering of spin periods between 6 and 12 s (observed at present in this class of objects), their period derivatives, their thermal X-ray luminosities, and the association of two of them with young supernova remnants can only be understood globally if the magnetic field in magnetars decays significantly on a timescale of the order of 104 yr.
Articolo in rivista - Articolo scientifico
Pulsars: General; Stars: Magnetic fields; Stars: Neutron; X-rays: Stars;
English
2000
529
1
L29
L32
none
Colpi, M., Geppert, U., Page, D. (2000). Period clustering of the anomalous X-ray pulsars and magnetic field decay in magnetars. THE ASTROPHYSICAL JOURNAL, 529(1), L29-L32 [10.1086/312448].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/3876
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