Title of article
First INTEGRAL observations of eight persistent neutron star low mass X-ray binaries
Author/Authors
Bazzano، Lydia A. نويسنده , , Ebisawa، K. نويسنده , , Rodriguez، J. نويسنده , , Goldoni، P. نويسنده , , Santangelo، A. نويسنده , , Kuulkers، E. نويسنده , , Zdziarski، A. A. نويسنده , , Hannikainen، D. C. نويسنده , , Frontera، F. نويسنده , , Palumbo، G. G. C. نويسنده , , Gimenez، A. نويسنده , , Courvoisier، T. J.-L. نويسنده , , Oosterbroek، T. نويسنده , , Beckmann، V. نويسنده , , Vilhu، O. نويسنده , , Paizis، A. نويسنده , , Chernyakova، M. نويسنده , , Lutovinov، A. نويسنده , , Heras، J. A. Zurita نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
-362
From page
363
To page
0
Abstract
Early results from the INTEGRAL Core Program, for a sample of eight persistently bright neutron star low mass X-ray binaries in the energy range from 5 keV to 200 keV, are presented. It is shown that INTEGRAL efficiently detects sources and that spectra may be obtained up to several hundreds of keV by combining data from three of the four INTEGRAL instruments: JEM-X, IBIS and SPI. For the source GX 17+2 it is shown that the spectrum extends well above 100 keV with a flattening above 30 keV. This might suggest a non-thermal comptonisation emission, but uncertainties in the current data reduction and background determination do not allow firm conclusions to be drawn yet.
Keywords
stars: neutron , binaries: close , X-rays: binaries , INTEGRAL sources
Journal title
Astronomy and Astrophysics
Serial Year
2003
Journal title
Astronomy and Astrophysics
Record number
78049
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