X-ray properties of the transient pulsar 3A 0535+262 in quiescence

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4977

Title:	X-ray properties of the transient pulsar 3A 0535+262 in quiescence
Authors:	Mukherjee, U. Paul, Biswajit
Issue Date:	Feb-2005
Publisher:	EDP Sciences
Citation:	Astronomy and Astrophysics, 2005, Vol. 431, p667-672
Abstract:	We present the timing and spectral properties of the transient Be/X-ray binary pulsar 3A 0535+262 during quiescence using three observations with the narrow field imaging instruments (NFI) of BeppoSAX. Assuming a distance of 2 kpc for this system, the 2-10 keV X-ray luminosities measured from the three observations are in the range of 1.5-4.0 × 1033 erg s-1, indicating a very low rate of accretion. We report the detection of pulsations at a very low luminosity of 2 × 1033 erg s-1 during one of the three observations, though at this accretion rate the system is expected to be in the centrifugally inhibited regime. The X-ray spectra for the unpulsed observations are best modeled as power law type while a combined model of power law and black-body is required to fit the pulsed spectrum.
Description:	Open Access
URI:	http://hdl.handle.net/2289/4977
ISSN:	0004-6361
Alternative Location:	http://adsabs.harvard.edu/abs/2005A%26A...431..667M http://arxiv.org/abs/physics/0410255 http://dx.doi.org/10.1051/0004-6361:20041665
Copyright:	2005 EDP Sciences
Appears in Collections:	Research Papers (A&A)

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