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Thread: space based event horizon imaging prospects

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    Default space based event horizon imaging prospects



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    Default Re: space based event horizon imaging prospects

    Don't get it, sharper images of no photons? They must mean sharper images of matter that has been able to escape and understand the distortions induced thereby having a better knowledge of the forces being enacted.
    A 3D image of nothing will improve the image by a factor of what?

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    Default Re: space based event horizon imaging prospects

    The imaging is possible because of the accretion disk of matter falling into the BH. That hot disk is a source of photons that backlights the silhouette of the event horizon. So your criticisms are unfair and off the mark.
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    Default Re: space based event horizon imaging prospects

    So if you read my comment carefully then we are in agreement? A BH can't be imaged, only the event horizon?

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    Default Re: space based event horizon imaging prospects

    The distinction between a BH and the event horizon is a distinction without a difference.
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    Default Re: space based event horizon imaging prospects

    Quote Originally Posted by not_Fritz_Argelander View Post
    The distinction between a BH and the event horizon is a distinction without a difference.
    Here's a handy article that debunks BH myths https://phys.org/news/2019-08-black-holes.html

    Physically BH = event horizon.
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    Default Re: space based event horizon imaging prospects

    Yes I have read the original in detail, quote from the document 'light can be detected near a black hole's event horizon's but as I said not photon's from the mass of the BH itself but energy from the EH upon conclusion defines it's presence . What colour is black?

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    Default Re: space based event horizon imaging prospects

    Tomayto. Tomahto.

    Claiming a difference between an event horizon and a black hole and a "black hole's mass" is a misleading word game with zero physical significance. The physics of it is clear, there is no difference. The physical meaning of "event horizon" and "black hole" in terms of measurements is identical.

    "What color is black?" shows another self confusing word game that is physically meaningless. Black holes aren't black.

    First of all they emit Hawking radiation. https://en.m.wikipedia.org/wiki/Hawking_radiation

    Secondly real world rotating black holes have an inner and outer event horizon structure and radiation from the ergosphere happens, though popular articles usually omit that bit of physics.
    https://en.m.wikipedia.org/wiki/Ergosphere

    Both radiation mechanisms can decrease the mass of the "black" hole.

    That's why I know (having done the maths getting degrees in physics) that your word game is confusing you and is misleading about the physics.

    Black holes aren't black.
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