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[BBC] Spinning black holes 'twist light'

post #1 of 6
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Quote:
Researchers have proposed a means to spot rotating black holes.

The idea may provide the first unique signature of black holes, which - true to their name - have never been seen.

The approach, reported in Nature Physics, relies on a property of light called its orbital angular momentum.

The roiling nature of the fabric of space-time around spinning black holes should impart a "twist" in this momentum which could be detected here on Earth, the researchers say.
Source: http://www.bbc.co.uk/news/science-environment-12434007
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post #2 of 6
Haven't we known this for a while? Why did it take so long to draw that conclusion...
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post #3 of 6
Quote:
Originally Posted by darthjoe229 View Post
Haven't we known this for a while? Why did it take so long to draw that conclusion...
yes we have, this is not news.
post #4 of 6
Wow when I read spinning black holes, the first thing I thought of was Chrono Trigger's Time portals
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post #5 of 6
They use this method to WEIGHT GALAXIES already. This isn't anything new. Still blows my mind, and maybe it should be left in news just in hopes of educating some people...
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post #6 of 6
I did a "science presentation" that went completely over the heads of my classmates in the 7th grade about how objects near black holes can appear to be moving faster than the speed of light due to angular momentum of light near the event horizon of superlarge black holes. That was about....1988.

(Yup. Definately member of the ubernerdherd - thank gawd I did heavy manual labor on a farm my whole young nerdy life - it was the only thing between me and a merciless beating.)
Edited by Mjolnir - 2/15/11 at 8:27pm
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Overclock.net › Forums › Industry News › Technology and Science News › [BBC] Spinning black holes 'twist light'