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Thread: Life and times of a black hole

  1. #201
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    here is another really big one.!



    "If we had this monster sitting at the centre of our Milky Way galaxy, it would appear 10 times brighter than a full moon. It would appear as an incredibly bright pin-point star that would almost wash out all of the stars in the sky."

    Dr Wolf said the energy emitted from this newly discovered supermassive black hole, also known as a quasar, was mostly ultraviolet light but also radiated x-rays.

    "Again, if this monster was at the centre of the Milky Way it would likely make life on Earth impossible with the huge amounts of x-rays emanating from it," he said.
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    Tytower obviously missed Allover's post of the same black hole.

    This black hole is ~20 billion solar masses @ ~2 billion years old.
    Ton618 is ~60 billion solar masses @ ~4 billion years old.
    S5 0014+81 ~40 billion solar masses @ ~4 billion years old.
    H1821+643 ~30 billion solar masses @ ~10 billion years old.
    H1821+643 ~20 billion solar masses @ ~13 billion years old.

    So while this is only a very small sample size, there is a general trend in quasar (black hole) sizes. The big ones are really far away, in the early universe.
    There are a lot more smaller supermassive black holes closer (later) in the universe.

    The obvious question is how such black holes can get so big so fast?
    The less obvious is why there aren't any that big in the universe now?
    Most nearby quasar and SMBH's are about 1 billion solar masses.
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  • #203
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    I have been thinking about how matter falls into a black mass.
    Gravity being the convoluted distorted thing it would be getting in or out of there would not be a straight line affair . Rather as it falls it would have an orbit that is "adjusted" as it comes in by the fields of the black mass.

    This site popped up with a computer simulation so I guess we will get a video soon of what they think might happen.




    In the new model, it is the viewing angle of the observer that accounts for differences in the observations. Galaxies are oriented randomly with respect to the line of sight of observers on Earth, who see different aspects of a tidal disruption event depending on its orientation.

    "It is like there is a veil that covers part of a beast," Ramirez-Ruiz explained. "From some angles we see an exposed beast, but from other angles we see a covered beast. The beast is the same, but our perceptions are different."

    The model developed by Dai and her collaborators combines elements from general relativity, magnetic fields, radiation, and gas hydrodynamics. It shows what astronomers can expect to see when viewing tidal disruption events from different angles, allowing researchers to fit different events into a coherent framework.
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  • #204
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    That would be frame dragging Tytower.
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    There is a fine line between "Hobby" and "Madness"

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    More reading for you
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    Pictured here is an artist's drawing of a particle jet emanating from a black hole at the center of a blazar.
    My Health , my Family and my Property are not Government business. Governments should do what they were designed to do . Govern the issues best done by a central body in the country.

    To defeat corruption in the public service , give them three times the penalty. Have them agree on hiring.

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