2006A&A...457..753G


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET20:26:08

2006A&A...457..753G - Astronomy and Astrophysics, volume 457, 753-762 (2006/10-3)

Microquasars as sources of positron annihilation radiation.

GUESSOUM N., JEAN P. and PRANTZOS N.

Abstract (from CDS):

We consider the production of positrons in microquasars, i.e. X-ray binary systems that exhibit jets frequently, but not continuously. We estimate the production rate of positrons in microquasars, both by simple energy considerations and in the framework of various proposed models. We then evaluate the collective emissivity of the annihilation radiation produced by Galactic microquasars and we find that it might constitute a substantial contribution to the annihilation flux measured by INTEGRAL/SPI. We also discuss the possible spatial distribution of Galactic microquasars, on the basis of the (scarce) available data and the resulting morphology of the flux received on Earth. Finally, we consider nearby ``misaligned'' microquasars, with jets occasionally hitting the atmosphere of the companion star; these would represent interesting point sources, for which we determine the annihilation flux and the corresponding light curve, as well as the line's spectral profile. We discuss the possibility of detection of such point sources by future instruments.

Abstract Copyright:

Journal keyword(s): gamma rays: theory - line: formation - ISM: general - X-rays: binaries

Simbad objects: 28

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Number of rows : 28

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 LS I +61 303 HXB 02 40 31.6641883136 +61 13 45.591138110 11.27 11.61 10.75 10.19 9.55 B0Ve 774 2
2 1A 0620-00 HXB 06 22 44.5420315454 -00 20 44.289428950 10.60 11.40 11.2     K3V-K7V 1050 0
3 V* KV UMa HXB 11 18 10.7922353051 +48 02 12.319175505     12.25     K5V-M1V 733 0
4 V* GU Mus HXB 11 26 26.5947467816 -68 40 32.888148788           K3V-K7V 675 1
5 V* V822 Cen LXB 14 58 21.9350279092 -31 40 07.515505032 11.95 12.85 12.8     K3-K7V 514 0
6 V* BR Cir HXB 15 20 40.85 -57 10 00.1   21.4 21.4     ~ 731 1
7 V* V381 Nor HXB 15 50 58.6520652623 -56 28 35.309070422   17.95 16.6     K3III 1056 0
8 V* V818 Sco LXB 16 19 55.0688745859 -15 38 25.019920749 11.60 12.40 11.1     Oev 1542 0
9 X Nor X-1 LXB 16 34 01.610 -47 23 34.80           ~ 435 0
10 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1741 1
11 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1811 0
12 V* V1101 Sco LXB 17 05 44.4915929414 -36 25 23.049863107   20.10 18.6     ~ 413 0
13 [KRL2007b] 222 LXB 17 09 07.61 -36 24 25.7           ~ 218 1
14 1H 1726-058 CV* 17 30 21.9016472695 -05 59 31.840647628   17.04 16.15     ~ 72 0
15 2E 3933 Sy1 17 41 55.2532168295 -12 11 56.587824725   17.36 16.40 14.9   ~ 53 0
16 NAME Great Annihilator LXB 17 43 54.83 -29 44 42.6           ~ 642 1
17 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3597 3
18 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 626 0
19 AX J1748.0-2829 LXB 17 48 05.060 -28 28 25.80     13.60     ~ 174 0
20 4U 1758-25 LXB 18 01 09.7308941918 -25 04 44.128444504     11.08     ~ 623 1
21 2XMM J180112.4-254436 LXB 18 01 12.40 -25 44 36.1           ~ 366 1
22 V* V4641 Sgr HXB 18 19 21.6342721789 -25 24 25.849323550     13.654   13.092 B9III 405 1
23 V* V479 Sct HXB 18 26 15.0561532140 -14 50 54.249464136 12.02 12.23 11.27 11.04   ON6V((f))z 503 2
24 IGR J18406-0539 Em* 18 40 47.0 -05 40 51     10.8     ~ 14 2
25 SS 433 HXB 19 11 49.5645897700 +04 58 57.824087535   16.3 13.0     A7Ib: 1958 4
26 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2346 0
27 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3982 0
28 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1798 2

    Equat.    Gal    SGal    Ecl

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