Tag Archive for 'Accretion disk'

Siraj & Loeb explore the possibility that accretion flares resulting from the tidal disruption of small Oort Cloud bodies by a putative primordial black hole could power an observable optical signal that could be searched for with the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time. Image credit: Sci-News.com / Zdeněk Bardon / ESO.

Astronomers Develop Method to Detect Tiny Black Holes in Outskirts of Our Solar System

Jul 13, 2020 by News Staff

Amir Siraj and Professor Avi Loeb from the Department of Astronomy at Harvard University have developed a new method to search for primordial black holes...

An artist’s conception illustrates the phenomena that make up the new class of cosmic explosions called fast blue optical transients. Image credit: Bill Saxton / NRAO / AUI / NSF.

New Class of Cosmic Explosions Discovered: Fast Blue Optical Transients

May 28, 2020 by News Staff

Fast blue optical transients (FBOTs) share some characteristics with supernova explosions of massive stars and with explosions that generate gamma-ray...

An artist’s impression of the center of the barred spiral galaxy Messier 77. ALMA discovered two counter-rotating flows of gas around the black hole. The colors in this image represent the motion of the gas: blue is material moving toward us, red is moving away. Image credit: NRAO / AUI / NSF / S. Dagnello.

ALMA Spots Counter-Rotating Disks around Supermassive Black Hole in Messier 77

Oct 17, 2019 by News Staff

Supermassive black holes, millions to billions of times the mass of our Sun, are found at the centers of galaxies. Many of these enormous objects are hidden...

An artist’s impression of the peculiar thin disk of material circling a supermassive black hole at the heart of NGC 3147. Image credit: M. Kornmesser / ESA / Hubble.

Thin Accretion Disk around NGC 3147’s Central Black Hole Surprises Astronomers

Jul 12, 2019 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have found an unexpected thin disk of material furiously whirling around a supermassive black hole...

Dai et al used Chandra to measure the spin of five quasars. Gravitational lensing of the light from each of these black holes by an intervening galaxy has created multiple images of each quasar, as shown by these Chandra images of four of the targets. Image credit: NASA / CXC / University of Oklahoma / Dai et al.

Chandra Uses Gravitational Lens to Capture Spinning Black Holes

Jul 5, 2019 by News Staff

By combining the capability of NASA’s Chandra X-ray Observatory with the power of a natural phenomenon called gravitational lensing, a team of astronomers...

An artist’s impression of a disk of cool interstellar gas surrounding the supermassive black hole at the center of the Milky Way. Image credit: NRAO / AUI / NSF / S. Dagnello.

ALMA Spots Rotating Disk of Cool Hydrogen around Milky Way’s Central Black Hole

Jun 7, 2019 by News Staff

There is a supermassive black hole of nearly 4 million solar masses at the center of our Milky Way Galaxy. A large reservoir of hot and cooler hydrogen...

An artist’s impression of the changing jet orientation in the V404 Cygni system; each segment (as separated by the clock hands) shows the jets at a different time, oriented in different directions as seen in our high angular resolution radio imaging. Image credit: ICRAR.

Astronomers See Rapidly Swinging Jets Coming from V404 Cygni

May 2, 2019 by News Staff

V404 Cygni is a binary system comprising a black hole and a star orbiting one another. It lies in the constellation Cygnus at a distance of about 7,800...

Photons emitted near rotating black holes encode quantum information that can be measured by actual quantum information technology. Image credit: Sci-News.com.

Spacetime Geometry near Rotating Black Holes Acts Like Quantum Computer, Physicist Says

Jan 15, 2019 by News Staff

According to a theoretical paper published in the Annals of Physics, by Dr. Ovidiu Racorean from the General Direction of Information Technology in Bucharest,...

This visualization uses data from simulations of orbital motions of gas swirling around at about 30% of the speed of light on a circular orbit around the supermassive black hole. Image credit: ESO / GRAVITY Collaboration / L. Calçada.

Astronomers Observe Interstellar Material Orbiting Close to Milky Way’s Central Black Hole

Oct 31, 2018 by News Staff

Astronomers using the GRAVITY instrument on ESO’s Very Large Telescope Interferometer (VLTI) have detected flares of infrared radiation coming from the...

Propagation of waves through an astrophysical disk can be understood using the Schrödinger Equation. Image credit: James Tuttle Keane, California Institute of Technology.

Massive Astronomical Objects Governed by Schrödinger Equation

Mar 6, 2018 by News Staff

Surprisingly, the Schrödinger Equation — the fundamental equation of quantum mechanics — emerges while studying massive astronomical structures. Propagation...

An artist’s impression of an accretion disk around a black hole. Image credit: XMM-Newton / ESA / NASA.

X-Rays from Accretion Disks around Rotating Black Holes Can Act as Carriers of Quantum Information

Nov 17, 2017 by News Staff

In a paper published in the journal New Astronomy, theoretical physicist Ovidiu Racorean suggests that X-ray photons emitted by accretion disks around...