Black Hole Archives - Page 2 of 5 -
Scientists across the globe are planning to bulid a virtual telescope as big as earth by connecting a planet-wide system of telescopes across our planet thus to take detailed pictures of the black hole at the center of our Milky Way galaxy.
As two galaxies enter the last stages of merging they become locked in a gravitational orbit around each other, as a result, astronomers believe that the galaxies’ supermassive black holes at their center would inevitably collide and merge to become one.
Astronomers from Chalmers University of Technology and Onsala Space Observatory in Sweden have observed an extremely intense magnetic field beyond anything previously detected very close to a supermassive black hole in a distant galaxy.
For years, scientists have believed that black holes are a portal to no-return. Astronauts in movies fear the mouths of black holes because the nothingness extends into an unknown forever. Black holes have been known as Bermuda Triangles of space – what goes in is lost forever. Or so we thought.
Don’t let the name fool you: a black hole is anything but empty space. Rather, it is a great amount of matter packed into a very small area – think of a star ten times more massive than the Sun squeezed into a sphere approximately the diameter of New York City. The result is a gravitational field so strong that nothing, not even light, can escape.
Astronomers have obtained direct observational evidence for the first time of a supermassive black hole, at the center of a large galaxy, powering huge molecular outflows from deep inside the galaxy’s core removing massive quantities of star-making gas thereby influencing the size, shape and overall fate of the host galaxy.
A rare medium-sized black hole known as NGC 2276-3c could be the “missing link” in the development of exotic bodies astronomers have been seeking for decades. A jet seen emanating from the object also seems to be snuffing out star formation in its neighborhood. The black hole sits within the galaxy NGC 2276, roughly 100 million light years from Earth.
Quasars — supermassive black holes found at the centre of distant massive galaxies — are the most luminous beacons in the sky. These central supermassive black holes actively accrete the surrounding materials and release a huge amount of their gravitational energy.
Dark matter and black holes are some of the most mysterious things in the Universe, so a connection between the two is absolutely thrilling. In a new study of elliptical galaxies led by Dr Akos Bogdan of the Harvard-Smithsonian Center for Astrophysics has revealed a surprising link between galaxies’ dark matter halos and their central black holes.
It may be another case of life imitating art, but the visual effects technology used for last fall’s Christopher Nolan sci-fi epic ‘Interstellar,’ may lead the way to further understanding of how real life black holes actually function – particularly the extreme power they wield, giving traction to new methods in astrophysics research.
A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return.
Astronomers studying an otherwise “boring” galaxy over a billion light-years from Earth have been surprised to see a powerful storm erupt from its core, an event that will quench any new star formation in the foreseeable future.