2017A&A...606L..10B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST14:43:48

2017A&A...606L..10B - Astronomy and Astrophysics, volume 606, L10-10 (2017/10-1)

The super-orbital modulation of supergiant high-mass X-ray binaries.

BOZZO E., OSKINOVA L., LOBEL A. and HAMANN W.-R.

Abstract (from CDS):

The long-term X-ray light curves of classical supergiant X-ray binaries and supergiant fast X-ray transients show relatively similar super-orbital modulations, which are still lacking a sound interpretation. We propose that these modulations are related to the presence of corotating interaction regions (CIRs) known to thread the winds of OB supergiants. To test this hypothesis, we couple the outcomes of three-dimensional (3D) hydrodynamic models for the formation of CIRs in stellar winds with a simplified recipe for the accretion onto a neutron star. The results show that the synthetic X-ray light curves are indeed modulated by the presence of the CIRs. The exact period and amplitude of these modulations depend on a number of parameters governing the hydrodynamic wind models and on the binary orbital configuration. To compare our model predictions with the observations, we apply the 3D wind structure previously shown to well explain the appearance of discrete absorption components in the UV time series of a prototypical B0.5I-type supergiant. Using the orbital parameters of IGRJ 16493-4348, which has the same B0.5I donor spectral type, the period and modulations in the simulated X-ray light curve are similar to the observed ones, thus providing support to our scenario. We propose that the presence of CIRs in donor star winds should be considered in future theoretical and simulation efforts of wind-fed X-ray binaries.

Abstract Copyright: © ESO, 2017

Journal keyword(s): X-rays: stars - X-rays: binaries - gamma rays: stars - stars: massive - stars: neutron - stars: neutron

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9440 1
2 SK 160 HXB 01 17 05.1447530244 -73 26 36.015353425 12.23 13.00 13.15   13.17 O9.7Ia+ 798 0
3 V* V662 Cas HXB 01 18 02.6973905772 +65 17 29.829417242 12.27 11.99 11.14 10.33 9.58 B1Iae 231 0
4 X LMC X-4 HXB 05 32 49.5558669817 -66 22 13.202534152   13.9 14.0     O8III 609 0
5 * J Pup * 07 53 18.1579197 -48 06 10.563676 3.11 4.10 4.24 4.26 4.38 B0.5Ib 218 0
6 V* GP Vel HXB 09 02 06.8610736194 -40 33 16.896402010 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1373 0
7 2MASS J16415078-4532253 HXB 16 41 50.7854893198 -45 32 25.452141297           O8.5(sg?) 92 2
8 2MASS J16480656-4512068 HXB 16 48 06.56 -45 12 06.8           O8.5Iab 119 2
9 2MASS J16492695-4349090 HXB 16 49 26.95 -43 49 09.0           B0.5Ib 46 0
10 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1920 0
11 4U 1908+075 HXB 19 10 48.2141670291 +07 35 51.715745251           O7.5-9.5sg 103 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-14:43:48

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