Author/Authors :
Rodriguez، J. نويسنده , , Walter، William R. نويسنده , , Tomsick، J. A. نويسنده , , Corbel، S. نويسنده , , Ubertini، P. نويسنده , , Courvoisier، T. J.-L. نويسنده , , Parmar، A. N. نويسنده , , Hartog، P. R. den نويسنده , , Plaa، J. de نويسنده , , Foschini، L. نويسنده , , Lebrun، F. نويسنده ,
Abstract :
INTEGRAL regularly scans the Galactic plane to search for new objects and in particular for absorbed sources with the bulk of their emission above 10-20 ke V. The first new INTEGRAL source was discovered on 2003 January 29, 0.5° from the Galactic plane and was further observed in the X-rays with XMM-Newton. This source, IGR J16318-4848, is intrinsically strongly absorbed by cold matter and displays exceptionally strong fluorescence emission lines. The likely infrared/optical counterpart indicates that IGR J16318-4848 is probably a High Mass X-Ray Binary neutron star or black hole enshrouded in a Compton thick environment. Strongly absorbed sources, not detected in previous surveys, could contribute significantly to the Galactic hard X-ray background between 10 and 200ke V.
