Thursday, January 18

Integral sees the Galactic centre playing hide and seek

This mosaic image, built with exposures obtained by the IBIS/ISGRI instrument on board ESA’s Integral gamma-ray observatory in April 2006, shows the Galactic centre region, an area of the sky supposed to host a gigantic black hole and characterized by the presence of a variety of hard X-ray and gamma-ray point sources. Due to the variability these sources possess on all time scales, the region never looks exactly the same. Surprisingly, the sources were


Integral sees the Galactic centre playing hide and seek from PhysOrg.com

ESA's gamma ray observatory Integral has caught the centre of our galaxy in a moment of rare quiet. A handful of the most energetic high-energy sources surrounding the black hole at the centre of the Galaxy had all faded into a temporary silence when Integral looked.[...]

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