2005A&A...431..667M


Query : 2005A&A...431..667M

2005A&A...431..667M - Astronomy and Astrophysics, volume 431667-672 (2005/2-4)

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

MUKHERJEE U. and PAUL B.

Abstract (from CDS):

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 2kpc for this system, the 2-10keV X-ray luminosities measured from the three observations are in the range of 1.5-4.0x1033erg/s, indicating a very low rate of accretion. We report the detection of pulsations at a very low luminosity of 2x1033erg/s 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.

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Journal keyword(s): stars: pulsars: individual: 3A 0535+262 - stars: neutron - stars: circumstellar matter - X-rays: general - X-rays: 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 - 2026
#notes
1 V* V635 Cas HXB 01 18 31.9704955824 +63 44 33.072603144 17.05 16.64 15.19 14.34 13.22 B0.2Ve 791 0
2 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
3 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 1045 0
4 HD 153919 HXB 17 03 56.7725629224 -37 50 38.913331452 6.06 6.78 6.51 6.08 5.90 O6Iafcp 851 0
5 3FHL J1746.2-2852 LXB 17 44 33.09 -28 44 27.0           ~ 559 0

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