black holes

NASA's Chandra X-ray Observatory has discovered that the cosmic landscape at the center of a group of galaxies has been profoundly reorganized due to multiple eruptions of a supermassive black hole over 50 million years old.

According to current instruments, the odds of finding a quadruple quasar are one in ten million. Given these figures, it is no wonder astronomers are surprised and fascinated to have discovered the first of them. The team of scientists responsible for the discovery has been led by Joseph Hennawi, from the Max Planck Institute for Astronomy (Germany).

This is the so-called "information loss paradox" of black holes, a problem that has been immersed in physics for almost 40 years and that, according to a new study from the University of Buffalo, is not possible: black holes They swallow matter, yes, but they do not destroy the information it contains. The work has been published in the journal Physical Review Letters.

An international team of astronomers has discovered, thanks to the Sloan Digital Sky Survey project, a supermassive black hole in the early universe; that is, the one that began after the Big Bang. The finding has surprised the entire scientific community since it is the center of an ultraluminous quasar, the brightest object found so far from that period.

The science fiction film "Interstellar" by director Christopher Nolan has managed to transfer fiction to scientific reality, since, as published by the team of experts that includes physicist Kip Thorne, from the California Institute of Technology (USA) in the magazine Classical and Quantum Gravity from IOP Publishing, the visual effects team has been so precise and realistic that they have explained to scientists how they made the images, providing the most compelling proof of what a black hole or hole would look like in reality. worm.

By measuring the rotation of the gas and stars that make up our galaxy, scientists have found that there is a large amount of dark matter between the Solar System and the center of the Milky Way.

At least mathematically. This is the controversial conclusion of the study presented by researcher Laura Mersini-Houghton of the College of Arts and Sciences at the University of North Carolina in Chapel Hill (USA) and whose approach was already published last June in the journal Physics Letters B.

Thanks to data from NASA's Hubble Space Telescope, a team of astronomers has discovered that a dwarf galaxy is home to a supermassive black hole with a mass equivalent to 21 million suns, making it the smallest known galaxy to host a so massive object. This galaxy, which has a mass of 140 million solar masses, is approximately 54 million light years from Earth.