Friday, 19 January 2007 05:19

All quiet at the Galactic centre

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Astronomers studying the centre of our galaxy via the ESA's Integral gamma ray observatory have seen a temporary fading of emissions from around ten normally high-energy sources.

All the sources are variable and their quiescent periods have just happened to coincide, but this event provides an unusual opportunity to study the area for faint sources that are normally swamped by their more energetic neighbours.

It also means there is a possibility of detecting the very faint radiation from Sagittarius A*, the huge black hole at the centre of the galaxy.

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Stephen Withers

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Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.

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