2006A&A...451..581D


Query : 2006A&A...451..581D

2006A&A...451..581D - Astronomy and Astrophysics, volume 451, 581-585 (2006/5-4)

Accretion torque on magnetized neutron stars.

DAI H.-L. and LI X.-D.

Abstract (from CDS):

The conventional picture of disk accretion onto magnetized neutron stars has been challenged by the spin changes observed in a few X-ray pulsars, and by theoretical results from numerical simulations of disk-magnetized star interactions. These indicate possible accretion during the propeller regime and the spin-down torque increasing with the accretion rate. Here we present a model for the accretion torque exerted by the disk on a magnetized neutron star, assuming accretion continues even for rapid rotators. The accretion torque is shown to have some different characteristics from that in the conventional model, but in accord with observations and numerical calculations of accretion-powered magnetized neutron stars. We also discuss its possible applications to the spin evolution in X-ray pulsars.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - pulsars: general - stars: magnetic field - X-ray: stars

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 959 0
2 V* V779 Cen HXB 11 21 15.0920532528 -60 37 25.630264596   14.4 12.27     O9III/Veq 1065 0
3 V* KZ TrA LXB 16 32 16.79 -67 27 39.3 17.40 18.60 18.5     ~ 565 1
4 NAME OAO 1657-41 HXB 17 00 48.884 -41 39 21.46           Ofpe/WN9 236 0
5 V* V2116 Oph Sy* 17 32 02.1532435416 -24 44 44.129169096   20.78 18.4     M6IIIe 680 1

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2023.06.02-08:17:51

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