Black holes News

The universe is filled with mysteries, and black holes are among the most captivating. These dense regions of space have such strong gravitational forces that nothing, not even light, can escape them. Check out mesmerizing images of Black Holes by NASA.

According To NASA, Black holes are among the most mysterious cosmic objects, much studied but not fully understood. These objects aren’t really holes. They’re huge concentrations of matter packed into very tiny spaces. A black hole is so dense that gravity just beneath its surface, the event horizon, is strong enough that nothing – not even light – can escape. Check out some amazing Facts about Black holes given by NASA  

Scientists from the Indian Institute of Astrophysics (IIA) have found a new way to probe into supermassive black holes – detecting their properties like mass and spin by observing how they rip apart stars. They have found a model which can infer black hole mass, its spin by observing how the stars are ripped apart on coming to the vicinity of these astronomical bodies with high gravitational force found at the centre of some massive galaxies. Most black holes lead to isolated lives and are impossible to study. Astronomers study them by watching for their effects on nearby stars and gas. Stars are disrupted when the black hole's tidal gravity exceeds the star's self-gravity, and this phenomenon is called tidal disruption events (TDE). This model, which can be applied after the star is observed to be tidally disrupted, and an accretion disk is formed, will help in expanding our understanding of the physics besides building valuable statistics of the black hole mass and stellar mass. Supermassive black holes govern the movement of stars orbiting within their gravitational potential, and their tidal forces can disrupt or rip apart the stars that come to their vicinity.

In a major discovery, scientists have succeeded in detecting rare crash of two mismatched black holes for the first time ever. On April 12, 2019, a signal of space-time ripples was picked up by gravitational wave detectors. These ripples were caused by colliding black holes. The scientists then studied the detection closely and found that the detection did not match the signals seen by them so far.

The researchers detected the collisions after re-analyzing the gravitational wave data obtained by the LIGO.

Scientists have developed a new technology that can listen to background humming of deep space and unveil thousands of hidden black hole collisions missed by gravitational-wave detectors.

There may be tens of thousands of black holes at the centre of the Milky Way Galaxy, say scientists who have discovered a dozen of them, lending support to a decades-old prediction.

At the center of each of these galaxies – like virtually every other galaxy – lies a supermassive black hole, an area of space with an exceptionally high gravitational field.

The dwarf galaxies under observation were still accumulating gas which should re-start star formation in a red, dead galaxy but wasn't.

The energy pouring into a galaxy from an active galactic nucleus is thought to turn off star formation by heating and dispelling the gas that would otherwise condense into stars.

The researchers found the magnetic energy around the black hole is about 400 times lower than previous crude estimates.  

Conditions favourable for black-hole mergers exist in the outer gas disks of big spiral galaxies

Calculations show that certain types of dark matter could form giant clouds around astrophysical black holes.

The latest observation was made on August 14, 2017. It's the first gravitational wave signal recorded by the Virgo detector.

The study published in the journal Nature Astronomy sheds light on a class of black holes having a mass upwards of one million times the mass of the Sun.   

The new research was an attempt to interpret the gravitational wave detections through the lens of what is known about galaxy formation and to form a framework for understanding future occurrences.

Last year, an international team of researchers detected the existence of gravitational waves, confirming German physicist Albert Einstein's 100-year-old prediction and astonishing the scientific community.

SOFIA flies above 99 percent of the Earth's water vapour, enabling the research group to characterise the properties of the torus-shaped dust structures at far-infrared wavelengths.

When a black hole swallows too much, the excess matter is converted into two jet-flows perpendicular to the accretion disk of the black hole, which is like a glutton with a bloated belly belching.

In order to make their map, scientists used the Sloan Foundation Telescope to observe an unprecedented number of quasars.