2006A&A...446.1081B


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.04CET16:58:51

2006A&A...446.1081B - Astronomy and Astrophysics, volume 446, 1081-1087 (2006/2-2)

A microquasar model applied to unidentified gamma-ray sources.

BOSCH-RAMON V., PAREDES J.M., ROMERO G.E. and TORRES D.F.

Abstract (from CDS):

Among unidentified gamma-ray sources in the galactic plane, there are some that present significant variability and have been proposed to be high-mass microquasars. To deepen the study of the possible association between variable low galactic latitude gamma-ray sources and microquasars, we have applied a leptonic jet model based on the microquasar scenario that reproduces the gamma-ray spectrum of three unidentified gamma-ray sources, and GRO J1411-64, and is consistent with the observational constraints at lower energies. We conclude that if these sources were generated by microquasars, the particle acceleration processes could not be as efficient as in other objects of this type that present harder gamma-ray spectra. Moreover, the dominant mechanism of high-energy emission should be synchrotron self-Compton (SSC) scattering, and the radio jets may only be observed at low frequencies. For each particular case, further predictions of jet physical conditions and variability generation mechanisms have been made in the context of the model. Although there might be other candidates able to explain the emission coming from these sources, microquasars cannot be excluded as counterparts. Observations performed by the next generation of gamma-ray instruments, like GLAST, are required to test the proposed model.

Abstract Copyright:

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

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 - 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 775 2
2 V* BW Cir HXB 13 58 09.700 -64 44 05.80 17.90 18.00 16.9     ~ 201 1
3 GRO J1411-64 gam 14 11 -64.0           ~ 2 0
4 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1038 2
5 4U 1416-62 HXB 14 21 12.8 -62 41 54   17.9 17.2     B1Ve 126 0
6 3EG J1735-1500 gam 17 36 -15.0           ~ 18 0
7 [CRP2003] J1737-15 rG 17 37 12.744 -15 11 01.14           ~ 4 0
8 PMN J1738-1502 Rad 17 38 11.6354984 -15 03 00.595725           ~ 15 1
9 V* V479 Sct HXB 18 26 15.0561532140 -14 50 54.249464136 12.02 12.23 11.27 11.04   ON6V((f))z 504 2
10 [VV2006] J182625.1+014940 QSO 18 26 25.0611604 +01 49 40.119529     19.90 18.5   ~ 23 0
11 GRO J1834+01 gam 18 29 +01.7           ~ 20 0

    Equat.    Gal    SGal    Ecl

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2021.03.04-16:58:51

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