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The INTEGRAL Science Data Centre (ISDC)
The INTEGRAL Science Data Centre (ISDC) provides the INTEGRAL data and means to analyse them to the scientific community. The ISDC runs a gamma ray burst alert system that provides the position of
JEM-X: The X-ray monitor aboard INTEGRAL ?
The JEM-X monitor provides X-ray spectra and imaging with arcminute angular resolution in the 3 to 35 keV band. The good angular resolution and the low energy response of JEM-X plays an important
A study of magnetic fields of accreting X-ray pulsars with the Rossi X-ray Timing Explorer
Using a consistent set of models, we parameterized the X-ray spectra of all accreting pulsars in the Rossi X-Ray Timing Explorer (RXTE) database that exhibit cyclotron resonance scattering features
Spectral formation in accreting X-ray pulsars: bimodal variation of the cyclotron energy with luminosity
Context. Accretion-powered X-ray pulsars exhibit significant variability of the cyclotron resonance scattering feature (CRSF) centroid energy on pulse-to-pulse timescales, and also on much longer
High variability in Vela X-1: giant flares and off states
Aims. We investigate the spectral and temporal behavior of the high mass X-ray binary Vela X-1 during a phase of high activity, with special focus on the observed giant flares and off states.
The variable cyclotron line in GX 301-2
We present pulse phase resolved spectra of the hypergiant high mass X-ray binary GX 301−2. We observed the source in 2001 October with RXTE continuously for a total on-source time of almost 200 ks.
INTEGRAL observations of the cosmic X-ray background in the 5-100 keV range via occultation by the Earth
Aims. We study the spectrum of the cosmic X-ray background (CXB) in energy range ∼5−100 keV. Methods. Early in 2006 the INTEGRAL observatory performed a series of four 30 ks observations with the
Confirmation of two cyclotron lines in Vela X-1
We present pulse phase-resolved X-ray spectra of the high mass X-ray binary Vela X-1 using the Rossi X-ray Timing Explorer. We observed Vela X-1 in 1998 and 2000 with a total observation time of
JEM-X science analysis software
The science analysis of the data from JEM-X on INTEGRAL is performed through a number of levels including corrections, good time selection, imaging and source finding, spectrum and light-curve
Clumped stellar winds in supergiant high‐mass X‐ray binaries: X‐ray variability and photoionization
ABSTRACT The clumping of massive star winds is an established paradigm confirmed by multiple lines ofevidence and supported by stellar wind theory. The purpose of this paper is to bridge the