Black Hole

SAN JOSE, Costa Rica —  On Father’s Day last year, Octavio Enríquez shared pizza and soda with his two children. Then he told them he was leaving. A Nicaraguan journalist known for rigorous investigations, his latest reporting had led him dangerously close to President Daniel Ortega, a former leftist revolutionary who…

Blazars are powerful active galactic nuclei in which supermassive black holes eject relativistic jets directed along our line of sight. A blazar can shine brighter than its galaxy and can be seen with radio telescopes from a distance of billions of light-years away. Scientists at the Event Horizon Telescope (EHT)…

From the exceedingly big to the unfathomably small, cosmologists are trying to unravel a bizarre set of figures that may reveal what happens inside a black hole, why the Higgs boson is so light and the chances of you having a doppelgänger Physics 9 August 2022 By Antonio Padilla Christian…

mathematical physicsBy Steve NadisAugust 4, 2022 The solutions to Einstein’s equations that describe a spinning black hole won’t blow up, even when poked or prodded. Mehau Kulyk / Science Source In 1963, the mathematician Roy Kerr found a solution to Einstein’s equations that precisely described the space-time outside what we…

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The doughnut-shaped ring surrounding many supermassive black holes tells researchers about how fast the space object is feeding and can change how the black hole is viewed from Earth. Credit: ESA/NASA, the AVO project and Paolo Padovani Researchers use X-ray telescopes and a new data analysis technique to describe space…

In a new study, scientists at the Max Planck Institute for Gravitational Physics in Potsdam and Japan modeled the complete process of colliding a black hole with a neutron star. They estimated the entire process, starting with the final orbits and continuing through the merger and post-merger period, when high-energy…

Of all the terrors that lurk in the depths of space, one class of object stands out above all others: black holes. If you were to venture close enough to a black hole, you'd be on a one way trip, experiencing a phenomenon called, delightfully enough, spaghettification. The forces of…

When a hapless star ventures too close to one of the supermassive black holes that lurk at the center of galaxies, it’s torn to shreds and stretched like spaghetti. In this so-called tidal disruption event (TDE), the black hole dines on the stellar remnants, which wrap around the black hole’s belly…

A European team of astronomers led by Professor Kalliopi Dasyra of the National and Kapodistrian University of Athens, Greece, under participation of Dr. Thomas Bisbas, University of Cologne modelled several emission lines in Atacama Large Millimeter Array (ALMA) and Very Large Telescope (VLT) observations to measure the gas pressure in…