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Thread: Today's black hole

  1. #1
    Master noel's Avatar
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    Today's black hole

    https://www.bbc.com/news/science-environment-47873592

    I was surprised it isn't just black - which wouldn't have made for a very good picture of course. It's got a halo of light around it.
    No longer "resting"

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    Quote Originally Posted by noel View Post
    https://www.bbc.com/news/science-environment-47873592

    I was surprised it isn't just black - which wouldn't have made for a very good picture of course. It's got a halo of light around it.
    Nor is the centre surface black in theoretical physics. I refer you to Hawkings first opus " blackholes ain't so black"
    Last edited by Oracle; 10-04-2019 at 10:57 PM.

  3. #3
    Crikey!

    Theoretical Physics? Black Holes?

    Are you sure this Forum can cope with such erudition?
    "...as dry as the Atacama desert".

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    Looks like the shadow of the light from the infalling material. After a lot of data processed from a lot of telscopes over a fair bit of time, or somat. See this link, more info than bbc but not the full blown paper https://astrobites.org/2019/04/11/th...-a-black-hole/
    Measure the whole Surface of the Earth with our own feet. Don Quixote

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    Quote Originally Posted by Eddie D View Post
    Looks like the shadow of the light from the infalling material. After a lot of data processed from a lot of telscopes over a fair bit of time, or somat. See this link, more info than bbc but not the full blown paper https://astrobites.org/2019/04/11/th...-a-black-hole/
    Think slingshot. Photons trapped in a layer whirling round just above the event horizon then thrown out into space. So it is seen emerging only from the periphery, several times the diameter of the hole. So the central area seen as dark, nothing emanates from there. The colours are only symbolic, it is not visible radiation. The bright side is because of rotation.
    Last edited by Oracle; 11-04-2019 at 09:52 PM.

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    Be warned. The next thing these boffins will be telling us is that man has walked on the moon
    Visibility good except in Hill Fog

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    Quote Originally Posted by Llani Boy View Post
    Be warned. The next thing these boffins will be telling us is that man has walked on the moon
    Watched it live! Pictures were lousy. How many can say that?

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    Today, nearly 50 years since Neil Armstrong supposedly walked on the moon the Israeli’s couldn’t even land an unmanned craft there. With all today’s modern technology I would have thought if it was possible to put a man on the moon we would have been going regularly by now.
    It never happened, so you missed nothing on those lousy pictures Oracle!
    Visibility good except in Hill Fog

  9. #9
    Quote Originally Posted by Oracle View Post
    Think slingshot. Photons trapped in a layer whirling round just above the event horizon then thrown out into space. So it is seen emerging only from the periphery, several times the diameter of the hole. So the central area seen as dark, nothing emanates from there. The colours are only symbolic, it is not visible radiation. The bright side is because of rotation.
    Maybe so, and interesting; but if you want any credibilty attached to your doom and gloom, end of the world, Brexit scenario then where do you stand on how important Johnny Burnette and the Rock'n'Roll trio's The Train Kept A-Rollin' stands in the pantheon - particularly the never-before-heard sound of Paul Burlison on guitar which pre-dated eg Keith Richards' fuzz-tone sound?
    Last edited by Graham Breeze; 11-04-2019 at 11:18 PM.
    "...as dry as the Atacama desert".

  10. #10
    Senior Member Daletownrunner's Avatar
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    Quote Originally Posted by Llani Boy View Post
    Today, nearly 50 years since Neil Armstrong supposedly walked on the moon the Israeli’s couldn’t even land an unmanned craft there. With all today’s modern technology I would have thought if it was possible to put a man on the moon we would have been going regularly by now.
    It never happened, so you missed nothing on those lousy pictures Oracle!
    I went to Camelot at Charnock Richard once with the kids, it was rubbish and too expensive, we never went back so a bit like Americans and the moon really. (although it is now closed and still sits forlorn at the side of the M6, Camelot that is, not the moon )

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