INVESTIGADORES
COMBI Jorge Ariel
artículos
Título:
The dust-enshrouded microquasar candidate AX J1639.0-4642 = IGR J16393-4643
Autor/es:
COMBI, J. A.; M.RIBÓ; I.F. MIRABEL; SUGIZAKI, M.
Revista:
ASTRONOMY AND ASTROPHYSICS
Editorial:
EDP SCIENCES S A
Referencias:
Lugar: Paris; Año: 2004 vol. 422 p. 1031 - 1037
ISSN:
0004-6361
Resumen:
We present a multiwavelength study of the field containing the
unidentified X-ray source AX J1639.0-4642, discovered
with the ASCA observatory and recently detected with the IBIS telescope,
onboard the INTEGRAL satellite, dubbed IGR
J16393-4643. The huge hydrogen column density towards the
source, the hard spectral index in the 0.7-10 keV band and its flux
variability suggest that the source is a High Mass X-ray Binary (HMXB)
enshrouded by dust. Our search reveals the presence of a non-thermal
radio counterpart within the X-ray error box. After a study of the
broadband emission from X-rays to the radio domain, we propose that
AX J1639.0-4642 is a dust-enshrouded Microquasar (MQ)
candidate. In addition, the X-ray source is well within the 95% location
contour of the unidentified γ-ray source 3EG
J1639-4702. The main properties of AX
J1639.0-4642/3EG J1639-4702 are consistent
with those of two other MQs previously proposed to display high-energy
γ-ray emission.