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

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 $\times$ 10${}^{33}$ erg s${}^{-1}$, indicating a very low rate of accretion. We report the detection of pulsations at a very low luminosity of 2 $\times$ 10${}^{33}$ 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.

13 pages, 6 figures, accepted in Astronomy and Astrophysics

References in corpus (10)

• A natural explanation for periodic X-ray outbursts in Be/X-ray binaries
• The distances to the X-ray binaries LSI +61 303 and A0535+262
• The transient X-ray pulsar 4U 0115+63 from quiescence to outburst through the centrifugal transition
• Discovery of a Cyclotron Resonant Scattering Feature in the RXTE Spectrum of 4U 0352+309 (X Per)
• Nature of the Soft Spectral Component in the X-ray Pulsars SMC X-1 and LMC X-4
• Chandra Grating Spectroscopy of the X-ray Binary 4U 1700-37 in a Flaring State
• ASCA Observation of the New Transient X-ray Pulsar XTE J0111.2-7317 in the Small Magellanic Cloud
• A Chandra observation of GRO J1744-28: the bursting pulsar in quiescence
• Hard X-ray tails and cyclotron features in X-ray pulsars
• X-ray and optical periodicities in X-ray binaries. I.A0535+26

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