Black Holes

Black Holes News -- ScienceDaily Black Holes in Space. Read science articles on colliding supermassive black holes, simulated gravitational waves of a black hole, black hole theory and more. Astronomy images.

  • Best evidence of rare black hole captured
    on June 18, 2018 at 6:18 pm

    Scientists have been able to prove the existence of small black holes and those that are super-massive but the existence of an elusive type of black hole, known as intermediate-mass black holes (IMBHs) is hotly debated. New research shows the strongest evidence to date that this middle-of-the-road black hole exists, by serendipitously capturing one in action devouring an encountering star. […]

  • Astronomers see distant eruption as black hole destroys star
    on June 15, 2018 at 1:38 am

    Scientists get first direct images showing fast-moving jet of particles ejected as a supermassive black hole at the core of a galaxy shreds a passing star. […]

  • Dust clouds can explain puzzling features of active galactic nuclei
    on June 15, 2018 at 1:36 am

    Many large galaxies have a bright central region called an active galactic nucleus, powered by matter spiraling into a supermassive black hole. Gas clouds around the AGN emit light at characteristic wavelengths, but the complexity and variability of these emissions has been a longstanding puzzle. A new study explains these and other puzzling features of active galactic nuclei as the result of small clouds of dust that can partially obscure the innermost regions of AGNs. […]

  • Short gamma-ray bursts do follow binary neutron star mergers
    on June 14, 2018 at 5:51 am

    Researchers have confirmed that last fall's union of two neutron stars did in fact cause a short gamma-ray burst. […]

  • Tumultuous galaxy mergers better at switching on black holes
    on June 6, 2018 at 9:37 pm

    A new study finds that violent crashes may be more effective at activating black holes than more peaceful mergers. […]

  • New model explains what we see when a massive black hole devours a star
    on May 29, 2018 at 6:09 pm

    A star that wanders too close to the supermassive black hole in the center of its galaxy will be torn apart by the black hole's gravity in a violent cataclysm called a tidal disruption event (TDE), producing a bright flare of radiation. A new study provides a unified model that explains recent observations of these extreme events. […]

  • Black holes from an exacomputer
    on May 29, 2018 at 5:21 pm

    What happens when two black holes merge, or when stars collide with a black hole? This has now been simulated using a novel numerical method. The simulation code 'ExaHyPE' is designed in such a way that it will be able to calculate gravitational waves on the future generation of 'exascale' supercomputers. […]

  • Astronomers find fastest-growing black hole known in space
    on May 16, 2018 at 2:52 pm

    Astronomers have found the fastest-growing black hole known in the universe, describing it as a monster that devours a mass equivalent to our sun every two days. […]

  • Dozens of binaries from Milky Way's globular clusters could be detectable by LISA
    on May 11, 2018 at 8:02 pm

    A next-generation observatory, called LISA, is expected to be in space in 2034, and it will be sensitive to gravitational waves of a lower frequency than those detected by the Earth-bound Laser Interferometer Gravitational-Wave Observatory (LIGO). […]

  • Milky Way's supermassive black hole may have 'unseen' siblings
    on April 24, 2018 at 5:36 pm

    Astronomers predict that galaxies with a mass similar to the Milky Way should host several supermassive black holes. […]

  • Black hole and stellar winds form giant butterfly, shut down star formation in galaxy
    on April 18, 2018 at 6:15 pm

    Researchers have completed an unprecedented 'dissection' of twin galaxies in the final stages of merging. The new study explores a galaxy called NGC 6240. While most galaxies in the universe hold only one supermassive black hole at their center, NGC 6240 contains two -- and they're circling each other in the last steps before crashing together. […]

  • Can we tell black holes apart?
    on April 17, 2018 at 3:57 pm

    Astrophysicists have created and compared self-consistent and realistic images of the shadow of an accreting supermassive black hole. The goal was to test if Einsteinian black holes can be distinguished from those in alternative theories of gravity. […]

  • Background hum of space could reveal hidden black holes
    on April 12, 2018 at 12:57 pm

    Deep space is not as silent as we have been led to believe. Every few minutes a pair of black holes smash into each other. These cataclysms release ripples in the fabric of spacetime known as gravitational waves. Now scientists have developed a way to listen in on these events. The new technique is expected to reveal the presence of thousands of previously hidden black holes. […]

  • Tens of thousands of black holes may exist in Milky Way's center
    on April 4, 2018 at 5:35 pm

    Astrophysicists have discovered a dozen black holes gathered around Sagittarius A* (Sgr A*), the supermassive black hole in the center of the Milky Way Galaxy. The finding is the first to support a decades-old prediction, opening up myriad opportunities to better understand the universe. […]

  • Deep inside Perseus A – A telescope larger than the Earth makes a sharp image of the formation of...
    on April 3, 2018 at 1:00 pm

    Researchers have imaged newly forming jets of plasma from a massive black hole with unprecedented accuracy. Radio images made with a combination of telescopes in space and on the ground resolve the jet structure merely a couple of hundred black hole radii or 12 light days from its launching site. […]

  • Gravitational waves created by black holes in the cenetr of most galaxies
    on April 2, 2018 at 11:28 pm

    Gravitational waves may be forged in the heart of the galaxy, says a new study. […]

  • Scientists detect radio echoes of a black hole feeding on a star
    on March 19, 2018 at 3:58 pm

    A scientist has detected radio echoes of a black hole feeding on a star, suggesting black hole emits a jet of energy proportional to the stellar material it gobbles up. […]

  • A new kind of star
    on March 8, 2018 at 3:52 pm

    A new kind of star: Astronomers have developed a novel mathematical model that combines general relativity with the repulsive effect of quantum vacuum polarization. The inclusion of this repulsive force allows describing ultracompact configurations of stars, which were previously considered by scientists not to exist in equilibrium. […]

  • Black holes from small galaxies might emit gamma rays
    on February 28, 2018 at 6:41 pm

    Researchers have discovered seven galaxies that could shake up what astrophysicists thought they knew about how the size of a galaxy -- and the black hole at its center -- can affect its behavior. […]

  • Beaming with the light of millions of suns
    on February 26, 2018 at 5:25 pm

    An astronomy team is homing in on the nature of extreme objects known as ultraluminous X-ray sources, or ULXs. […]

  • Astronomers discover S0-2 star is single and ready for big Einstein test
    on February 22, 2018 at 3:36 pm

    A team of astronomers has found that S0-2 does not have a significant other after all, or at least one that is massive enough to get in the way of critical measurements that astronomers need to test Einstein's Theory of General Relativity. Up until now, it was thought that S0-2 may be a binary, a system where two stars circle around each other. […]

  • Magnetic field traces gas and dust swirling around supermassive black hole
    on February 21, 2018 at 5:29 pm

    Astronomers reveal a new high resolution map of the magnetic field lines in gas and dust swirling around the supermassive black hole at the center of our Galaxy. The team created the map, which is the first of its kind, using the CanariCam infrared camera attached to the Gran Telescopio Canarias sited on the island of La Palma. […]

  • Some black holes erase your past
    on February 21, 2018 at 2:13 pm

    Physicists insist on determinism: your past and present determine your future uniquely, per Einstein's equations of general relativity. They call this strong cosmic censorship. A mathematician found some types of black holes -- charged, non-rotating objects in an expanding universe -- that allow an observer inside the black hole to travel across a horizon into a place where the past is obliterated and there are an infinite number of possible futures for every initial state. […]

  • No relation between a supermassive black hole and its host galaxy?
    on February 20, 2018 at 5:30 pm

    Using ALMA to observe an active galaxy with a strong ionized gas outflow from the galactic center, a team has obtained a result making astronomers even more puzzled -- the team clearly detected CO gas associated with the galactic disk, yet they have also found that the CO gas which settles in the galaxy is not affected by the strong ionized gas outflow launched from the galactic center. […]

  • 'Ultramassive' black holes discovered in far-off galaxies
    on February 20, 2018 at 2:32 pm

    Thanks to data collected by NASA’s Chandra X-ray telescope on galaxies up to 3.5 billion light years away from Earth, an international team of astrophysicists was able to detect what is likely to be the most massive black holes ever discovered in the universe. The team’s calculations showed that these “ultramassive” black holes are growing faster than the stars in their respective galaxies. […]

  • Supermassive black hole model predicts characteristic light signals at cusp of collision
    on February 14, 2018 at 11:19 pm

    A new simulation of supermassive black holes -- the behemoths at the centers of galaxies -- uses a realistic scenario to predict the light signals emitted in the surrounding gas before the masses collide, said researchers. […]

  • Rotating dusty gaseous donut around an active supermassive black hole
    on February 14, 2018 at 2:39 pm

    High resolution observations show a rotating dusty gas torus around an active supermassive black hole. The existence of such rotating donuts-shape structures was first suggested decades ago, but this is the first time one has been confirmed so clearly. This is an important step in understanding the co-evolution of supermassive black holes and their host galaxies. […]

  • Supermassive black holes can feast on one star per year
    on February 1, 2018 at 7:14 pm

    Supermassive black holes in some galaxies can eat stars at a rate of one per year in the period following a galactic merger, helping explain a longstanding astronomical mystery about eccentric stellar orbits. […]

  • Overabundance of massive stars in the Tarantula Nebula
    on January 31, 2018 at 4:03 pm

    Astronomers have revealed an 'astonishing' overabundance of massive stars in a neighboring galaxy. The discovery, made in a gigantic star-forming region of the Large Magellanic Cloud galaxy, has 'far-reaching' consequences for our understanding of how stars transformed the pristine Universe into the one we live in today. […]

  • Newborns or survivors? The unexpected matter found in hostile black hole winds
    on January 30, 2018 at 5:37 pm

    The existence of large numbers of molecules in winds powered by supermassive black holes at the centers of galaxies has puzzled astronomers since they were discovered more than a decade ago. Molecules trace the coldest parts of space, and black holes are the most energetic phenomena in the universe, so finding molecules in black hole winds was like discovering ice in a furnace. A new theory predicts the molecules are born in the winds with unique properties that enable them to adapt to and thrive in the hostile environment. […]