2007A&A...476..335W


Query : 2007A&A...476..335W

2007A&A...476..335W - Astronomy and Astrophysics, volume 476, 335-340 (2007/12-2)

Probing clumpy stellar winds with a neutron star.

WALTER R. and ZURITA HERAS J.

Abstract (from CDS):

INTEGRAL, the European Space Agency's γ-ray observatory, tripled the number of super-giant high-mass X-ray binaries (sgHMXB) known in the Galaxy by revealing absorbed and fast transient (SFXT) systems. In these sources, quantitative constraints on the wind clumping of the massive stars could be obtained from the study of the hard X-ray variability of the compact accreting object. Hard X-ray flares and quiescent emission of SFXT systems have been characterized and used to derive wind clump parameters. A large fraction of the hard X-ray emission is emitted in the form of flares with a typical duration of 3ks, frequency of 7 days and luminosity of 1036erg/s. Such flares are most probably emitted by the interaction of a compact object orbiting at ∼10R* with wind clumps (1022–23g) representing a large fraction of the stellar mass-loss rate. The density ratio between the clumps and the inter-clump medium is 102–4 in SFXT systems. The parameters of the clumps and of the inter-clump medium, derived from the SFXT flaring behavior, are in good agreement with macro-clumping scenario and line driven instability simulations. SFXT have probably a larger orbital radius than classical sgHMXB.

Abstract Copyright:

Journal keyword(s): gamma rays: observations - X-rays: binaries - pulsars: general - stars: winds, outflows - supergiants

CDS comments: 2S 014+65 is a misprint for 2S 0114+65, IGR J11305-6246 is a misprint for IGR J11305-6256, AX J1700.2-5129 not identified.

Simbad objects: 36

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Number of rows : 36
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 BD+60 73 HXB 00 37 09.6358465128 +61 21 36.485521705 9.79 10.14 9.66     B1Ib 66 0
2 V* V662 Cas HXB 01 18 02.6973905772 +65 17 29.829417242 12.27 11.99 11.14 10.33 9.58 B1Iae 240 0
3 HD 74194 HXB 08 40 47.7915105936 -45 03 30.231146034 7.05 7.77 7.55 8.70   O8.5Ib-II(f)p 184 0
4 V* GP Vel HXB 09 02 06.8610736194 -40 33 16.896402010 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1398 0
5 HD 306414 s*b 11 21 46.8237210288 -59 51 47.969821291 10.12 10.69 10.23 10.00   B1Ia 140 0
6 HD 100199 HXB 11 31 06.9123810954 -62 56 48.929152927 7.33 8.147 8.17 8.98   B0/1(III)n(e) 91 0
7 1E 1145.1-6141 HXB 11 47 28.5595495558 -61 57 13.424380577   13.08       B2Iae 127 0
8 V* BP Cru HXB 12 26 37.5607088371 -62 46 13.259605389   12.70 10.66     B1.5Iaeq 621 0
9 V* QV Nor HXB 15 42 23.3633078550 -52 23 09.576918639   16.3 14.5     B0.2Ia:e 384 1
10 HD 146628 * 16 19 29.5213460341 -49 45 40.716565476 10.23 10.58 10.06 10.02   B1/2Ia 64 1
11 IGR J16195-4945 HXB 16 19 32.1829528980 -49 44 30.564960595   17.4 16.8 15.3 15.6 B1sg 48 0
12 CXOU J162046.2-513006 HXB 16 20 46.2655398336 -51 30 06.046848280   18.9   16.28 13.4 B8IIIe 57 0
13 IGR J16283-4843 gam 16 28.3 -48 43           ~ 3 0
14 IGR J16318-4848 HXB 16 31 48.3102815892 -48 49 00.664215918           ~ 160 0
15 3FHL J1633.0-4746e HXB 16 32 01.87 -47 52 28.3           O8I 153 3
16 [KRL2007b] 194 Psr 16 36 30 -47 37.5           Be 75 0
17 IGR J16393-4641 gam 16 39.3 -46 41           ~ 5 1
18 2MASS J16415078-4532253 HXB 16 41 50.7854893198 -45 32 25.452141297           O8.5(sg?) 96 2
19 2MASS J16463526-4507045 HXB 16 46 35.2592332854 -45 07 04.609816032   15.2       O9.5Ia 89 1
20 2MASS J16480656-4512068 HXB 16 48 06.56 -45 12 06.8           O8.5Iab 125 2
21 HD 153919 HXB 17 03 56.7728262865 -37 50 38.912077679 6.06 6.78 6.51 6.08 5.90 O6Iafcp 775 1
22 2MASS J17251139-3616575 HXB 17 25 11.392 -36 16 57.53     14.30     B0-1Ia 111 2
23 AX J1739.1-3020 HXB 17 39 11.5521531365 -30 20 37.783172824     14.40 13.91   O8.5Iab(f) 145 1
24 2RXP J174040.9-280852 HXB 17 40 41.2 -28 08 50           ~ 24 1
25 2MASS J17430133-3622221 HXB 17 43 01.336 -36 22 22.18       16.8   OI 41 2
26 2XMM J174906.8-273232 HXB 17 49 06.79 -27 32 32.4           B1-3 41 0
27 IGR J17544-2619 HXB 17 54 25.2724584579 -26 19 52.578788584   14.71 12.94 12.10 10.38 O9Ib 169 0
28 IGR J18029-2016 HXB 18 02 39.9 -20 17 13           B1b 73 1
29 SAX J1818.6-1703 HXB 18 18 37.8990045305 -17 02 47.970872274     17.4 17.4   ~ 96 0
30 4FGL J1821.1-1422 HXB 18 20 29.5 -14 34 24           O9.5-B0Ve 56 1
31 [KRL2007b] 332 HXB 18 41 00.43 -05 35 46.5           B1Ib 119 1
32 [KRL2007b] 335 HXB 18 45 01.5 -04 33 58   16.24 14.06 12.71 11.42 O9Ia 78 0
33 2MASS J18553040-0236167 HXB 18 55 30.4059836401 -02 36 16.737233178           B0Iaep 82 0
34 4U 1907+09 HXB 19 09 37.9 +09 49 49   19.41 16.35 14.40 12.53 O8.5Iab 313 1
35 INTEGRAL1 111 HXB 19 14 04.2269997048 +09 52 58.398334234   18.6 16.4     B0.5I 90 0
36 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 4021 0

    Equat.    Gal    SGal    Ecl

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2021.07.25-14:00:13

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