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Broad-band spectral changes of the microquasars Cygnus X-1 and SWIFT J1753.5-0127
Marion Cadolle Bel, Marc Ribo, Jerome Rodriguez +3
We report high-energy results obtained with INTEGRAL and Rossi-XTE on two microquasars: the persistent high-mass system Cygnus X-1 and the transient low-mass binary SWIFT J1753.5-0…
Simultaneous INTEGRAL and RXTE observations of the accreting millisecond pulsar HETE J1900.1-2455
M. Falanga, J. Poutanen, E. W. Bonning +5
Aims: Hete J1900.1-2455 is the seventh known X-ray transient accreting millisecond pulsar and has been in outburst for more than one year. We compared the data on Hete J1900.1-2455…
The X-ray spectrum of the bursting atoll source 4U~1728-34 observed with INTEGRAL
M. Falanga, D. Gotz, P. Goldoni +5
We present for the first time a study of the 3-200 keV broad band spectra of the bursting atoll source 4U 1728-34 (GX 354-0) along its hardness intensity diagram. The analysis was…
Periodic Modulations in an X-ray Flare from Sagittarius A*
Guillaume Belanger, Regis Terrier, Okkie De Jager +2
We present the highly significant detection of a quasi-periodic flux modulation with a period of 22.2 min seen in the X-ray data of the Sgr A* flare of 2004 August 31. This flaring…