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Simultaneous multiwavelength observations of the Low/Hard State of the X-ray transient source SWIFT J1753.5-0127 | | M. Cadolle Bel
; M. Ribo
; J. Rodriguez
; S. Chaty
; S. Corbel
; A. Goldwurm
; F. Frontera
; R. Farinelli
; P. D’Avanzo
; A. Tarana
; P. Ubertini
; P. Laurent
; P. Goldoni
; I. F. Mirabel
; | | Date: |
20 Dec 2006 | | Abstract: | We report the results of simultaneous multiwavelength observations of the X-ray transient source SWIFT J1753.5-0127 performed with INTEGRAL, RXTE, NTT, REM and VLA on 2005 August 10-12. The source, which underwent an X-ray outburst since 2005 May 30, was observed during the INTEGRAL Target of Opportunity program dedicated to new X-ray novae located in the Galactic Halo. Broad-band spectra and fast timing variability properties of SWIFT J1753.5-0127 are analyzed together with the optical, near infra-red and radio data. We show that the source was significantly detected up to 600 keV with Comptonization parameters and timing properties typical of the so-called Low/Hard State of black hole candidates. We build a spectral energy distribution and we show that SWIFT J1753.5-0127 does not follow the usual radio/X-ray correlation of X-ray binaries in the Low/Hard State. We give estimates of distance and mass. We conclude that SWIFT J1753.5-0127 belongs to the X-ray nova class and that it is likely a black hole candidate transient source of the Galactic Halo which remained in the Low/Hard State during its main outburst. We discuss our results within the context of Comptonization and jet models. | | Source: | arXiv, astro-ph/0612575 | | Services: | Forum | Review | PDF | Favorites | |
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