2017A&A...602A.114L


Query : 2017A&A...602A.114L

2017A&A...602A.114L - Astronomy and Astrophysics, volume 602A, 114-114 (2017/6-1)

Swift monitoring of the massive X-ray binary SAX J0635.2+0533.

LA PALOMBARA N. and MEREGHETTI S.

Abstract (from CDS):

SAX J0635.2+0533 is a binary pulsar with a very short pulsation period (P=33.8ms) and a high long-term spin down (P>3.8x10–13s/s), which suggests a rotation-powered (instead of an accretion-powered) nature for this source. While it was discovered at a flux level around 10–11erg/cm2/s, between 2003 and 2004, this source was detected with XMM-Newton at an average flux of about 10–13erg/cm2/s; moreover, the flux varied by over one order of magnitude on timescales of a few days, sometimes decreasing to below 3x10–14erg/cm2/s. Since both the rotation-powered and the accretion-powered scenarios have difficulties to explain these properties, the nature of SAX J0635.2+0533 is still unclear. Here we report on our recent long-term monitoring campaign on SAX J0635.2+0533 carried out with Swift, and on a systematic reanalysis of all the RXTE observations performed between 1999 and 2001. We found that during this time interval, the source remained almost always active at a flux level above 10–12erg/cm2/s.

Abstract Copyright: © ESO, 2017

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

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10532 1
2 LS I +61 303 HXB 02 40 31.6644419688 +61 13 45.593918580 11.27 11.61 10.75 10.19 9.55 B0Ve 817 2
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16511 1
4 RX J0535.6-6651 HXB 05 35 40.9970566152 -66 51 53.547559416   13.7 13.8     B0.5IIIe 282 0
5 3EG J0634+0521 gam 06 32 51.3 +05 50 43           ~ 25 0
6 PSR J0635+0533 Psr 06 35 17.4 +05 33 21   13.81 12.83     B1IIIe-B2Ve 44 0
7 NAME MONOCEROS NEB SNR 06 38 43 +06 30.2           ~ 238 0
8 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 748 0
9 V* V479 Sct HXB 18 26 15.0561548880 -14 50 54.247274304 12.02 12.23 11.27 11.04   ON6V((f))z 546 2
10 PSR J1959+2048 Psr 19 59 36.7480 +20 48 14.599   20.4       ~ 768 2

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2023.01.31-18:11:58

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