Gas around black holes and interstellar medium distribution are key factors in understanding the growth of supermassive black holes and the evolution of their host galaxies. However, as a crucial parameter, gas density is hard to determine reliably, because the general method is not applicable to all quasars. Source: https://phys.org/news/2021-03-sharp-broad-absorption-line-variations.html…
Tag: Black
Lab-grown black hole behaves just like Stephen Hawking said it would
Like mad scientists, researchers are creating miniature black holes in their laboratories. Their mission? To see if a mysterious form of radiation predicted by Stephen Hawking exists. Source: https://www.livescience.com/black-hole-analog-confirms-hawking.html
What is a quasar?
A quasar is an extremely bright and distant point-like source visible to radio telescopes. The source is a so-called Active Galactic Nucleus, fueled by a supermassive black hole. Source: https://earthsky.org/astronomy-essentials/definition-what-is-a-quasar…
Cosmic ray originated in cataclysmic event
Astronomers found a high energy neutrino – a cosmic ray – that apparently originated during a “tidal disruption event,” that is, when a supermassive black hole shredded a distant star. Source: https://earthsky.org/space/origin-cosmic-ray-when-black-hole-shreds-star…
Parker Solar Probe captures a glimpse of Venus
The Parker Solar Probe turned its camera on Venus as the spacecraft flew by during a gravity assist. Source: https://earthsky.org/todays-image/solar-probe-flyby-photo-of-venus…
FBI Confirms Report of ‘Long, Cylindrical’ UFO ‘Moving Really Fast’ Over New Mex
An anonymous reader shares a PopularMechanics report: An American Airlines flight crew encountered an unidentified flying object over New Mexico on February 21. American Airlines has confirmed the strange incident, during which a “long, cylindrical object that almost looked like a cruise missile” zipped over the Airbus A320, according to a pilot’s transmission obtained by The War Zone. American Airlines Flight…
Ghost particle travels 750 million light-years, ends up buried under the Antarctic ice
Astronomers spot two highly delayed signals from two different black holes tearing apart stars in their vicinity. Source: https://www.livescience.com/tidal-disruption-evnts-release-neutrino.html
Merging boson stars could explain massive black hole collision and prove existence of dark matter
An international team of scientists led by the Galician Institute of High Energy Physics (IGFAE) and the University of Aveiro shows that the heaviest black hole collision ever observed, produced by the gravitational-wave GW190521, might actually be something even more mysterious: the merger of two boson stars. This would be the first evidence of the existence of these hypothetical objects, which…
Magnetic fields drive astrophysical jet shapes
Outflows of matter are general features stemming from systems powered by compact objects such as black holes, active galactic nuclei, pulsar wind nebulae, accreting objects such as Young Stellar Objects (YSO) and mature stars such as our sun. Source: https://phys.org/news/2021-02-magnetic-fields-astrophysical-jet.html…
Nearby black hole Cyg X-1 more massive than thought
New research suggests that the famous black hole Cygnus X-1 – first black hole ever detected and one of the closest to Earth – is farther away and much more massive than previously believed. Source: https://earthsky.org/space/cygnus-x-1-black-hole-more-massive-farther…