That stars over 8 masses will not end with white dwarf but explodes supernovae SNII. Those with masses greater than 20/30 solar masses should not shed enough fabric in the explosion so thatcollapse gravity most often gives one neutron star, but rather a star-sized hole. The observed masses have between 5 and 15 solar masses. … Read more
Contents of Sky & Space 583 – June-July 2022 File: The new black holes They vibrate space-time Since 2015, the detection of gravitational waves has given us access to a totally invisible and hitherto inaccessible universe. A population of black holes with unimaginable characteristics has emerged. And it shuffles the cards for the stars’ evolution. … Read more
Towards the end of the 1960s, there were a few researchers, including Martin Rees, but especially his colleague and countrymanastrophysicist British Donald Lynden-Bell, claimed that the majority of large galaxies must host supermassive black holes in their center. This is a dissertation that has been widely accepted for at least 20 years, although a conclusive … Read more
Stunning “immersive” monsters, by definition invisible … The mysteries of the universe and physics, black holes have long been detected by scientists who in a few years have managed to uncover them before the eyes of the world. The first “black stars” Their existence was assumed in the late 18th century by the Frenchman Pierre … Read more
Recently one joint press release from European Southern Observatory (ESO) andEvent Horizon Telescope (EHT) has announced that on May 12, 2022, there will be an online conference at. 15.00 in France, which will report new results and especially about supermassive black hole of The Milky Way. It contains just over DKK 4 million masses solar … Read more
What is a quantum sensor? ” A sensor is by definition a tool that measures one or more physical quantitiesexplains Preden Roulleau, research director at CEA-Iramis. They are said to be “quantum” when they use quantum properties to function, such as the principle of superposition, quantum interference, or entanglement of their quantum states These sensors … Read more
A team of astronomers has discovered a supermassive black hole on a few hundred thousand solar masses in a dwarf galaxy, Mrk 462. The discovery of this “small” black hole hidden by gas and matter could allow scientists to learn more about formation and life cycle of these cosmic phenomena. Among the cosmic ogres that … Read more
Sky & Space No. 582 hits stores on March 15, 2022. The hidden worlds of the Milky Way – interstellar asteroids, floating planets, black holes… – are the cover of this April-May 2022 issue. Contents of sky and space 582 – April-May 2022 File: The hidden worlds of the Milky Way emerge from the shadows … Read more
What is a quantum sensor? ” A sensor is by definition a tool that measures one or more physical quantitiesexplains Preden Roulleau, research director at CEA-Iramis. They are said to be “quantum” when they use quantum properties to function, such as the principle of superposition, quantum interference, or entanglement of their quantum states These sensors … Read more
The first candidates for the black hole of the stars was discovered in the early 1970s with the advent of especially X-ray astronomy. But we can say that the first candidates for the title of black hole tout court were discovered in the early 1960s with quasars. In the following years from the end of … Read more