2003A&A...407L..25Q

Query : 2003A&A...407L..25Q

2003A&A...407L..25Q - Astronomy and Astrophysics, volume 407, L25-28 (2003/8-4)

An accretion disk model for periodic timing variations of pulsars.

QIAO G.J., XUE Y.Q., XU R.X., WANG H.G. and XIAO B.W.

Abstract (from CDS):

The long-term, highly periodic and correlated variations in both the pulse shape and the rate of slow-down of two isolated pulsars (PSRs) PSR B1828-11 and PSR B1642-03 were discovered recently. This phenomenon may provide evidence for ``free precession'' as suggested in the literature. Some authors presented various kinds of models to explain this phenomenon within the framework of free precession. Here we present an accretion disk model for this precession phenomenon instead. Under reasonable parameters, the observed phenomenon can be explained by an isolated pulsar with a fossil disk. This may link radio pulsars and anomalous X-ray pulsars (AXPs) and present an indirect evidence for the existence of the fossil disk in nature.

Abstract Copyright: ∼

Journal keyword(s): stars: neutron - accretion, accretion disks

Simbad objects: 3

Full paper

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Number of rows : 3

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2023	#notes
1	PSR B1642-03	Psr	16 45 02.0330	-03 17 57.200					~	345	0
2	V* HZ Her	LXB	16 57 49.8110126616	+35 20 32.486555472	11.90	14.89	13.63	13.88	B3/6ep	2029	0
3	PSR B1828-10	Psr	18 30 47.566	-10 59 27.90					~	158	1

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