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Related papers: INTEGRAL survey of the Cassiopeia region in hard X…

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The anomalous X-ray pulsar 4U 0142+61 was studied by the INTEGRAL observations. The hard X-ray spectrum of 18 -- 500 keV for 4U 0142+61 was derived using near 9 years of INTEGRAL/IBIS data. We obtained the average hard X-ray spectrum of 4U…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Wei Wang , Hao Tong , Yan-Jun Guo

We present detailed spectral and temporal characteristics both in the hard X-ray (>10 keV) and soft X-ray (<10 keV) domains, obtained using data from INTEGRAL, XMM-Newton, ASCA and RXTE. The INTEGRAL time-averaged total spectrum shows a…

Astrophysics · Physics 2009-11-13 P. R. den Hartog , L. Kuiper , W. Hermsen , V. M. Kaspi , R. Dib , J. Knoedlseder , F. P. Gavriil

This letter presents the first results of an observational campaign to study the Galactic Centre with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the energy ranges 20-40 and 40-100 keV, give a…

The hard X-ray source IGRJ11215-5952, discovered with INTEGRAL during a brief outburst in 2005, has been proposed as a new member of the class of Supergiant Fast X-ray Transients. Analysing archival INTEGRAL observations of the source…

Astrophysics · Physics 2008-11-26 Lara Sidoli , Ada Paizis , Sandro Mereghetti

We report the discovery of persistent hard X-ray emission extending up to 150 keV from the soft gamma-ray repeater SGR 1806-20 using data obtained with the INTEGRAL satellite in 2003-2004. Previous observations of hard X-rays from objects…

Astrophysics · Physics 2009-11-10 S. Mereghetti , D. Gotz , I. F. Mirabel , K. Hurley

We present spectra for 34 accretion-powered X-ray and one millisecond pulsars that were within the field of view of the INTEGRAL observatory over two years (December 2002 - January 2005) of its in-orbit operation and that were detected by…

Astrophysics · Physics 2009-11-13 E. V. Filippova , S. S. Tsygankov , A. A. Lutovinov , R. A. Sunyaev

We report on the discovery of hard spectral tails for energies above 10 keV in the total and pulsed spectra of anomalous X-ray pulsars 1RXS J1708-4009, 4U 0142+61 and 1E 2259+586 using RXTE PCA (2-60 keV) and HEXTE (15-250 keV) data and…

Astrophysics · Physics 2009-11-11 L. Kuiper , W. Hermsen , P. R. den Hartog , W. Collmar

We present results of all sky survey, performed with data acquired by the IBIS telescope onboard the INTEGRAL observatory over eleven years of operation, at energies above 100 keV. A catalogue of detected sources includes 132 objects. The…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 Roman A. Krivonos , Sergey S. Tsygankov , Alexander A. Lutovinov , Mikhail G. Revnivtsev , Eugene M. Churazov , Rashid A. Sunyaev

We present the preliminary results of the observational campaign performed in 2003 to study the Galactic Nucleus with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the energy range above 20 keV,…

The X-ray burster 4U1850-087, located in the globular cluster NGC6712, is an ultracompact binary likely harbouring a degenerate companion.The source has been observed with INTEGRAL several times, during the monitoring of the Galactic plane,…

Astrophysics · Physics 2007-05-23 Lara Sidoli , Ada Paizis , Angela Bazzano , Sandro Mereghetti

IGR J18483-0311 is a poorly known transient hard X-ray source discovered by INTEGRAL during observations of the Galactic Center region performed between 23--28 April 2003. Aims: To detect new outbursts from IGR J18483-0311 using INTEGRAL…

Following an extensive survey of the galactic plane by the INTEGRAL satellite, new hard X-ray sources are discovered with a significant fraction of Cataclysmic Variables (CVs) among them. We report here the identification of one of these…

Astrophysics · Physics 2009-11-13 J. M. Bonnet-Bidaud , D. de Martino , M. Falanga , M. Mouchet , N. Masetti

We studied spectra for 34 accretion-powered X-ray and one millisecond pulsars that were within the field of view of the INTEGRAL observatory over two years (December 2002 - January 2005) of its in-orbit operation and that were detected by…

Astrophysics · Physics 2007-05-23 E. V. Filippova , S. S. Tsygankov , A. A. Lutovinov , R. A. Sunyaev

Using 2.5 Ms of data obtained by the INTEGRAL satellite in 2003-2004, we discovered persistent hard X-ray emission from the soft gamma-ray repeater SGR 1900+14. Its 20-100 keV spectrum is well described by a steep power law with photon…

Astrophysics · Physics 2009-11-11 D. Gotz , S. Mereghetti , A. Tiengo , P. Esposito

We present the first results of the observations of the X-ray pulsars LMC X-4, 4U0352+309 and EXO1722-363 performed with the INTEGRAL observatory. The LMC X-4 was investigated during the whole superorbital cycle ($\sim$30 days) and it was…

A number of new X-ray sources (IGR J17091-3624, IGR/XTE J17391-3021, IGR J17464-3213 (= XTE J17464-3213 = H 1743-322), IGR J17597-2201, SAX/IGR J18027-2017) have been observed with the INTEGRAL observatory during ultra deep exposure of the…

Astrophysics · Physics 2009-11-10 A. Lutovinov , M. Revnivtsev , S. Molkov , R. Sunyaev

IGR J17591-2342 is a recently INTEGRAL discovered accreting millisecond X-ray pulsar that went into outburst around July 21, 2018. To better understand the physics acting in these systems during the outburst episode we performed detailed…

High Energy Astrophysical Phenomena · Physics 2020-09-09 L. Kuiper , S. S. Tsygankov , M. Falanga , I. A. Mereminskij , D. K. Galloway , J. Poutanen , Z. Li

The X-ray burster 4U1850-087, located in the Galactic globular cluster NGC6712, is an ultracompact binary (orbital period~21 min),likely harbouring a degenerate companion.The source has been observed at soft gamma-rays several times with…

Astrophysics · Physics 2009-11-11 L. Sidoli , A. Paizis , A. Bazzano , S. Mereghetti

We present preliminary results of observations of X-ray pulsar SAX J2103.5+4545 with INTEGRAL observatory in Dec 2002. Maps of this sky region in energy bands 3-10, 15-40, 40-100 and 100-200 keV are presented. The source is significantly…

Astrophysics · Physics 2009-11-07 A. Lutovinov , S. Molkov , M. Revnivtsev

For the first time a quasi-simultaneous multi-wavelength campaign has been performed on an Anomalous X-ray Pulsar from the radio to the hard X-ray band. 4U 0142+61 was an INTEGRAL target for 1 Ms in July 2005. During these observations it…

Astrophysics · Physics 2008-11-26 P. R. den Hartog , L. Kuiper , W. Hermsen , N. Rea , M. Durant , B. Stappers , V. M. Kaspi , R. Dib
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