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Black Holes

Discussion in 'Science & Technology' started by Drone, Sep 24, 2011.

  1. Drone

    Drone

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    Rare Triple Supermassive Black Hole System

    Einstein’s General Relativity predicts that merging black holes are sources of gravitational waves. Astronomers have managed to spot three black holes packed about as tightly together as they could be before spiraling into each other and merging.

    Galaxy SDSS J150243.09+1111557.3 contains a triple system with a very compact double supermassive black hole J1502S (E&W) and J1502P.

    [​IMG]
     
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  2. D007

    D007

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    Neat. :p
    Going there on my next vacation!
     
  3. Drone

    Drone

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    Astronomers have uncovered rhythmic pulsations from a rare type of black hole 12 million ly away by sifting through archival data from NASA's Rossi X-ray Timing Explorer satellite. The signals have helped astronomers identify an unusual midsize black hole called M82 X-1. By going over past RXTE observations, the astronomers found specific changes in brightness that helped them determine M82 X-1 measures around 400 solar masses.
     
  4. Drone

    Drone

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    The relatively nearby dwarf galaxy M60-UCD1 may house a supermassive black hole at its heart equal in mass to ~ 21 million suns.



    [​IMG]



    It lies ~ 54 million ly away from Earth and orbits M60, one of the largest galaxies near the Milky Way, at a distance of only ~ 22000 ly from the larger galaxy's center, closer than the sun is to the center of the Milky Way!

    The scientists calculated the size of the supermassive black hole that may lurk inside M60-UCD1 by analyzing the motions of the stars in that galaxy, which helped the researchers deduce the amount of mass needed to exert the gravitational field seen pulling on those stars. The stars at the center of M60-UCD1 zip at speeds of ~ 370000 km/h, much faster than stars would be expected to move in the absence of such a black hole.

    The supermassive black hole at the core of the Milky Way has a mass of ~ 4 million suns, taking up less than 0.01% of the galaxy's estimated total mass, which is ~ 50 billion suns. In comparison, the supermassive black hole that may lie in the core of M60-UCD1 appears five times larger than the one in the Milky Way, and also seems to make up about 15% of the dwarf galaxy's mass, which is ~ 140 million suns. That's pretty amazing, given that the Milky Way is 500 times larger and more than 1000 times heavier than M60-UCD1.

    The researchers suggest M60-UCD1 was once a very large galaxy, with maybe 10 billion stars, but then it passed very close to the center of an even larger galaxy, M60, and in that process, all the stars and dark matter in the outer part of the galaxy got torn away and became part of M60. That was maybe as much as 10 billion years ago.

    Eventually, M60-UCD1 may merge with the center of M60, which has a monster black hole in it, with 4.5 billion solar masses (>1000 times bigger than the supermassive black hole in our galaxy!). When that happens, the black hole in M60-UCD1 will merge with that monster black hole.

    The astronomers suggest the way stars move in many other ultra-compact dwarf galaxies hints that they may host supermassive black holes, as well. All in all, the scientists suggest that ultra-compact dwarf galaxies could double the number of supermassive black holes known in the nearby regions of the universe. The researchers are participating in ongoing projects that may provide conclusive evidence for supermassive black holes in 4 other ultra-compact dwarfs.

    [​IMG]
     
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  5. VulkanBros

    VulkanBros

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    Monster Black Hole Found in Dwarf Galaxy video :
     
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  6. FordGT90Concept

    FordGT90Concept "I go fast!1!11!1!"

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  7. Drone

    Drone

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    Astronomers have discovered a black hole that is consuming gas from a nearby star 10 times faster than previously thought possible. The black hole P13 lies on the outskirts of NGC 7793 ~ 12 million ly from Earth.

    [​IMG]

    P13 rotates around a supergiant 'donor' star (20 times heavier than our Sun) in 64 days. Scientists worked out that the black hole must be <15 times the mass of our Sun


    Size don't always matter XD
     
  8. Drone

    Drone

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    Astronomers found a black hole in KA1858 galaxy (located 100 million ly away).

    BYU scientists estimate that this black hole has a mass of approximately 8 million times the mass of our sun.

     
  9. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    I think someone should start a campaign to rename Black Holes because they arent actually holes.
     
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  10. Knoxx29

    Knoxx29

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    What are they?
     
  11. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    Imagine a big black ball rather than a big black hole.
     
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  12. Knoxx29

    Knoxx29

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    My imagination shows me this:

    BigBlackBall.gif
     
  13. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    Nice one.


    I like that.
     
  14. MxPhenom 216

    MxPhenom 216 Corsair Fanboy

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    Yeah, I would say a worm hole is more of a "hole." not only that but a little more interesting in what they do.

    Anyone see the movie Interstellar?

    [​IMG]
     
    Last edited: Jan 6, 2015
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  15. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    Imagine something the size of earth but a billion times heavier so all that mass is in a very small space.

    Then think about Earths gravity and how a fighter pilot might experience 4 or 5 g,s (or 4 times gravity) in a turn

    Consider then the gravitational force an object a billion times more massive might have. What would your face look like if you pulled a billion g,s
    20140806_113515 (2).jpg


    So a big black ball in space. Whatever is sucked in by its gravitational pull will probably end up as an incredibly thin smear equally spread over its whole surface. Possibly.
     
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  16. twilyth

    twilyth

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    Wormholes are proposed as means of solving the black hole firewall problem - http://blogs.scientificamerican.com...es-may-save-physics-from-black-hole-infernos/

     
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  17. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    phew.
     
  18. Drone

    Drone

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    A new high-energy X-ray image from NASA's Nuclear Spectroscopic Telescope Array [NuSTAR] shows two colliding galaxies, collectively called Arp 299, located 134 million ly away. Each of the galaxies has a supermassive black hole at its heart. The black hole on the right is, in fact, the hungry one. As it feeds on gas, energetic processes close to the black hole heat electrons and protons to about hundreds of millions of degrees, creating a superhot plasma, or corona, that boosts the visible light up to high-energy X-rays. Meanwhile, the black hole on the left either is "snoozing away," in what is referred to as a quiescent, or dormant state, or is buried in so much gas and dust that the high-energy X-rays can't escape.

    [​IMG]
     
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  19. Drone

    Drone

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    [​IMG]

    NGC 3115

    Using the Chandra data, the flow of hot gas toward the supermassive black hole in the center of this galaxy has been imaged. NGC 3115's black hole has a mass of ~2 billion times that of the Sun.
     
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  20. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    i Just cant get my head round some of these numbers.

    2 billion times the mass of the sun. Thats BIG.

    Keep the pics coming please.
     
  21. xvi

    xvi

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    OOH! OOH! OOH! There's a really excellent series on YouTube called Vsauce, one video from which is on black holes. It's very, very relevant here!

     
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  22. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    Thankyou for that.

    Its all speculation of course. Book me on the first flight and i will pm you when i get there .
     
  23. rtwjunkie

    rtwjunkie

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    Except, keep in mind, we're talking MASS, not size. Black holes, or more correctly Black Blobs of Matter, are compact and extremely dense.
     
  24. CAPSLOCKSTUCK

    CAPSLOCKSTUCK

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    Yes i understand the difference, even so the scale is immense.

    One teaspoon full =,s mass of the earth or something mad like that.
     
  25. xvi

    xvi

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    There's a little flash project that HTwins put together called Scale of the Universe 2. I found that, for me, it puts some things in to decent perspective. Still boggles the mind if you're not careful though.

    I think I had a couple old friends who were black holes. :rolleyes:
     
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