New observations by the ALMA telescope in Chile have revealed a never-before-seen disk of cool, interstellar gas wrapped around Sagittarius A*, the giant black hole at the center of our galaxy. Source: https://earthsky.org/space/cool-gas-ring-milky-way-central-black-hole…
Tag: Black Hole
Detection of powerful winds driven by a supermassive black hole from La Palma
The supermassive black holes in the centres of many galaxies seem to have a major influence on their evolution. This happens during a phase in which the black hole is consuming the material of the galaxy in which it resides at a very high rate, growing in mass as it does so. During this phase, the galaxy has an active galactic…
What Is the Black Hole Information Paradox?
The universe really likes its information. It doesn’t like to create new information, and it doesn’t like to destroy any of its existing information. Source: https://www.livescience.com/65660-black-hole-information-paradox-mystery.html
Most-detailed-ever simulations of black hole solve longstanding mystery
An international team has constructed the most detailed, highest resolution simulation of a black hole to date. The simulation proves theoretical predictions about the nature of accretion disks—the matter that orbits and eventually falls into a black hole—that have never before been seen. Source: https://phys.org/news/2019-06-most-detailed-ever-simulations-black-hole-longstanding.html…
Cool, nebulous ring around Milky Way’s supermassive black hole
New ALMA observations reveal a never-before-seen disk of cool, interstellar gas wrapped around the supermassive black hole at the center of the Milky Way. This nebulous disk gives astronomers new insights into the workings of accretion: the siphoning of material onto the surface of a black hole. The results are published in the journal Nature. Source: https://phys.org/news/2019-06-cool-nebulous-milky-supermassive-black.html…
The accretion disk around our galaxy’s black hole has been spotted at last
The Milky Way’s central black hole has a disk of gas and dust orbiting it, astronomers can finally say with confidence. Source: https://www.sciencenews.org/article/accretion-disk-milky-way-galaxy-black-hole4…
In a first, scientists took the temperature of a sonic black hole
A lab-made black hole that traps sound, not light, emits radiation at a certain temperature, as Stephen Hawking first predicted. Source: https://www.sciencenews.org/article/first-scientists-took-temperature-sonic-black-hole4…
Today in science: Einstein’s triumph
May 29, 2019, is the 100th anniversary of a total solar eclipse, during which Sir Arthur Eddington observed the bending of light around the sun, thereby proving Einstein’s general relativity theory and catapulting Einstein into rock star fame. Source: https://earthsky.org/human-world/may-29-1919-solar-eclipse-einstein-relativity…
Imaging black hole like listening to broken piano, says scientist
US computer scientist Katie Bouman, who became a global sensation over her role in generating the world’s first image of a black hole, has described the painstaking process as akin to listening to a piano with broken keys. Source: https://phys.org/news/2019-05-imaging-black-hole-broken-piano.html…
Telescopes in space for even sharper images of black holes
Astronomers have just managed to take the first image of a black hole, and now the next challenge facing them is how to take even sharper images, so that Einstein’s Theory of General Relativity can be tested. Radboud University astronomers, along with the European Space Agency (ESA) and others, are putting forward a concept for achieving this by launching radio telescopes…