2009A&A...504..181M


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.22CEST12:16:11

2009A&A...504..181M - Astronomy and Astrophysics, volume 504, 181-184 (2009/9-2)

A low luminosity state in the massive X-ray binary SAX J0635+0533.

MEREGHETTI S. and LA PALOMBARA N.

Abstract (from CDS):

The X-ray pulsar SAX J0635+0533 was repeatedly observed with the XMM-Newton satellite in 2003-2004. The precise localization provided by these observations confirms the association of SAX J0635+0533 with a Be star. The source was found, for the first time, in a low-intensity state, a factor ∼30 lower than that seen in all previous observations. The spectrum, well fitted by an absorbed power law with photon index ∼1.7 and NH=1.2x1022cm–2, was compatible with that of the high state. The low flux did not allow the detection of the pulsations at 33.8ms seen in BeppoSAX and RXTE data. In view of the low luminosity observed in 2003-2004, we reconsider the peculiarities of this source in both the accretion and rotation-powered scenarios.

Abstract Copyright:

Journal keyword(s): X-rays: individual: SAX J0635+0533 - X-rays: binaries

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 RX J0535.6-6651 HXB 05 35 40.9965654015 -66 51 53.522991468   13.7 13.8     B0.5IIIe 277 0
2 PSR J0635+0533 Psr 06 35 17.4 +05 33 21   13.81 12.83     B1IIIe-B2Ve 38 0
3 CPD-63 2495 HXB 13 02 47.6541729595 -63 50 08.625922862 10.34 10.72 9.98 10.03   O9.5Ve 656 1
4 PSR J1959+2048 Psr 19 59 36.7480 +20 48 14.599   20.4       ~ 675 2

    Equat.    Gal    SGal    Ecl

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2019.10.22-12:16:11

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