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The dust-enshrouded microquasar candidate AX J1639.0-4642 = IGR J16393-4643 | J. A. Combi
; M. Ribo
; I. F. Mirabel
; M. Sugizaki
; | Date: |
30 Dec 2003 | Journal: | Astron.Astrophys. 422 (2004) 1031-1037 | Subject: | astro-ph | Affiliation: | 1, 2), M. Ribo , I. F. Mirabel (3, 4), M. Sugizaki ( Instituto Argentino de Radioastronomia, Universidad de Jaen, CEA Saclay, IAFE-CONICET, University of California | Abstract: | 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 gamma-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 gamma-ray emission. | Source: | arXiv, astro-ph/0401643 | Services: | Forum | Review | PDF | Favorites |
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