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Old 09-09-2010, 06:47 AM
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CraigS
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In the News: New Class of Black Hole

"Extreme X-ray source supports new class of black hole"

Quote:
The X-ray source, HLX-1, is the most extreme member of an extraordinary class of objects - the ultra-luminous X-ray sources - and is located in the galaxy ESO 243-49 at a distance of ~300 million light years from the Earth.
...
The astronomers' findings confirm that the extreme luminosity (which is a factor of ~100 above most other objects in its class, and a factor of ~10 higher than the next brightest ultra-luminous X-ray source) is correct.
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The VLT data analysis was especially complicated on this project, as it is very difficult to disentangle the signature in optical wavelengths of HLX-1 from the bright galaxy in which it lies.
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"This is very difficult to explain without the presence of an intermediate mass black hole of between ~500 and 10,000 times the mass of the Sun. HLX-1 is therefore (so far!) weathering the scrutiny of the international astronomy community."
Black Hole theory standing up to peer scruntiny and creating a new class of 'Intermediate' Black Holes in the centres of Galaxies .. in addition to the measurement breakthroughs made !!

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Old 09-09-2010, 10:59 AM
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renormalised (Carl)
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They've talked about these intermediate class of BH's for a number of years, now. The believe the centres of some globulars and dwarf galaxies are probably homes to these objects. Also, some of the galaxies with very small nuclei....Sc and Sd class, are probably homes to intermediate sized holes.
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