Integral observation of CYG X-1 in an intermediate state

J. Malzac; P. O. Petrucci; E. Jourdain; P. Sizun; M. Cadolle; G. Pooley; C. Cabanac; S. Chaty; T. Belloni; J. Rodriguez; J. P. Roques; P. Durouchoux; A. Goldwurm; P. Laurent

Integral observation of CYG X-1 in an intermediate state

J. Malzac
, P. O. Petrucci
, E. Jourdain
, P. Sizun
, M. Cadolle
, G. Pooley
, C. Cabanac
, S. Chaty
, T. Belloni
, J. Rodriguez
, J. P. Roques
, P. Durouchoux
, A. Goldwurm
, P. Laurent

IRAP/CNRS
Institute of Astronomy
Université Grenoble Alpes
Institut Pierre Simon Laplace, CNRS and CEA
University of Cambridge
Laboratoire de Probabilités et Modèles Aléatoires
INAF
University of Geneva

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 711 2003. Both spectral and variability properties of the source indicate that Cygnus X-1 was in an intermediate state. As expected during state transitions, we find an anticorrelation between the 3-10 keV and the 15 GHz radio fluxes and a strong correlation between the 3-200 keV hardness and radio flux.

Original language	English
Pages (from-to)	341-344
Number of pages	4
Journal	European Space Agency, (Special Publication) ESA SP
Issue number	552
Publication status	Published - 1 Dec 2004
Externally published	Yes
Event	5th INTEGRAL Workshop on The INTEGRAL Universe - Munich, Germany Duration: 16 Feb 2004 → 20 Feb 2004

Keywords

Black holes
Gamma-rays
Individual: Cyg X-1
X-ray binaries

Cite this

@article{0a6fb74c98864bdd8218bc60011d0609,

title = "Integral observation of CYG X-1 in an intermediate state",

abstract = "We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 711 2003. Both spectral and variability properties of the source indicate that Cygnus X-1 was in an intermediate state. As expected during state transitions, we find an anticorrelation between the 3-10 keV and the 15 GHz radio fluxes and a strong correlation between the 3-200 keV hardness and radio flux.",

keywords = "Black holes, Gamma-rays, Individual: Cyg X-1, X-ray binaries",

author = "J. Malzac and Petrucci, \{P. O.\} and E. Jourdain and P. Sizun and M. Cadolle and G. Pooley and C. Cabanac and S. Chaty and T. Belloni and J. Rodriguez and Roques, \{J. P.\} and P. Durouchoux and A. Goldwurm and P. Laurent",

year = "2004",

month = dec,

day = "1",

language = "English",

pages = "341--344",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

number = "552",

note = "5th INTEGRAL Workshop on The INTEGRAL Universe ; Conference date: 16-02-2004 Through 20-02-2004",

}

TY - JOUR

T1 - Integral observation of CYG X-1 in an intermediate state

AU - Malzac, J.

AU - Petrucci, P. O.

AU - Jourdain, E.

AU - Sizun, P.

AU - Cadolle, M.

AU - Pooley, G.

AU - Cabanac, C.

AU - Chaty, S.

AU - Belloni, T.

AU - Rodriguez, J.

AU - Roques, J. P.

AU - Durouchoux, P.

AU - Goldwurm, A.

AU - Laurent, P.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 711 2003. Both spectral and variability properties of the source indicate that Cygnus X-1 was in an intermediate state. As expected during state transitions, we find an anticorrelation between the 3-10 keV and the 15 GHz radio fluxes and a strong correlation between the 3-200 keV hardness and radio flux.

AB - We present preliminary results of an observation of Cygnus X-1 with INTEGRAL performed on June 711 2003. Both spectral and variability properties of the source indicate that Cygnus X-1 was in an intermediate state. As expected during state transitions, we find an anticorrelation between the 3-10 keV and the 15 GHz radio fluxes and a strong correlation between the 3-200 keV hardness and radio flux.

KW - Black holes

KW - Gamma-rays

KW - Individual: Cyg X-1

KW - X-ray binaries

M3 - Conference article

AN - SCOPUS:23844516360

SN - 0379-6566

SP - 341

EP - 344

JO - European Space Agency, (Special Publication) ESA SP

JF - European Space Agency, (Special Publication) ESA SP

IS - 552

T2 - 5th INTEGRAL Workshop on The INTEGRAL Universe

Y2 - 16 February 2004 through 20 February 2004

ER -

Integral observation of CYG X-1 in an intermediate state

Abstract

Keywords

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