Tag: Giuseppina Fabbiano

  • Science & Tech

    Cool X-ray disk points to new type of black hole

    Black holes are objects so dense and with a gravitational potential so strong that nothing, not even light, can escape the pull if it ventures too close. Black holes are invisible, yet the gas and dust falling into a black hole are heated to high temperatures and glow furiously. Scientists agree that there are at…

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  • Science & Tech

    X-ray arcs tell tale of giant eruption

    Scientists from the Harvard-Smithsonian Center for Astrophysics (CfA) report that two arc-like structures of multimillion-degree gas in the galaxy Centaurus A appear to be part of a ring 25,000 light years in diameter. The size and location of the ring suggest that it could have been produced in a titanic explosion that occurred about 10…

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  • Science & Tech

    Chandra sees wealth of black holes in star-forming galaxies

    Three independent teams of research scientists, including one from the Harvard-Smithsonian Center for Astrophysics, used NASA’s Chandra X-ray Observatory to find what they suspect are groups of mid-mass black holes in starburst galaxies. In a starburst galaxy, stars form and explode at an unusually high rate. The discovery could help explain the relationship among mid-mass…

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  • Science & Tech

    Cosmic ‘superbubbles’ bespeak toil and trouble

    The merging Antennae Galaxies in constellation Corvus are producing massive bubbles of expanding X-ray-emitting gas at such astonishing rates that they are bumping into each other. Giuseppina Fabbiano, Andreas Zezas and Stephen Murray of the Harvard-Smithsonian Center for Astrophysics used NASA’s Chandra X-ray Observatory to capture in unprecedented detail this phenomenon. Fabbiano said that the…

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