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Integral captura un agujero negro en plena erupción   This animation consists of a sequence of two images taken by the IBIS/ISGRI instrument on board ESA’s Integral gamma-ray observatory, and it shows the galactic centre region in hard X-rays.
In one frame, the bright X-ray nova IGR J17497-2821 (indicated by the arrow) is seen during its discovery outburst, while the other frame is the same field as observed prior to the nova event. The other variable sources are well known X-ray binaries.
The two separate images can be downloaded here:
image 1, image 2  This X-ray image was obtained by ESA's XMM-Newton satellite during the night of 22-23 September 2006, and shows the intense X-ray emission of the X-ray nova IGR J17497-2821. The X-ray nova was first spotted by ESA’s Integral gamma-ray observatory.  Artist's representation of an X-ray nova. The compact object on the right - a neutron star or a black hole – ‘swallows’ gas from a companion star. The gas swirls in a disk around the compact object at very high velocity (close to the speed of light) and emits X-rays.  This image shows the field around the new X-ray nova IGR J17497-2821 (circled as source number 1) obtained by the Leonhard Euler (ground) telescope on 21 September 2006.
This source was found to have brightened by about 1 magnitude compared to earlier observations of this region. Release date: 28 noviembre 2006 |