Science and Technology

Scientists discover a bubble of hot gas around a black hole at the center of the Milky Way | Science

Scientists from the ALMA (Atacama Large Millimeter Array) observatory, one of the largest astronomical complexes in the world, discovered indicators of a ‘hot spot’ orbiting Sagittarius A*the black hole at the center of our Galaxy.

“We imagine it’s a bubble of hot gas around Sagittarius A*, in an orbit comparable in dimension to the planet Mercury, however which completes a revolution in about 70 minutes. For this to occur, the velocity at which it travels should be monumental, about 30% of the velocity of gentle!” defined Maciek Wielgus of the Max Planck Institute for Radio Astronomy in Germany in a assertion.

According to researchers, The discovery was made throughout the analysis work of the worldwide consortium of scientists which printed the first image of a supermassive black hole about 26,000 light-years from Earth.

In May of this yr, the Event Horizon Telescope (a collaborative community of astronomers, astrophysicists and scientists working with 9 radio telescopes situated around the world) confirmed the first picture of Sagittarius A*, however to the staff of scientists’ shock, there have been extra clues hidden in the measurements obtained solely with ALMA.

See the location of the black hole — Photo: NASA

Also in line with scientists, the outcomes of the examine verify earlier research from different telescopes who detected a burst of X-ray vitality emanating from the center of our galaxy.

“What is basically new and attention-grabbing is the undeniable fact that these explosions have thus far solely been clearly current in infrared and X-ray observations of Sagittarius A*. For the first time, we see sturdy indications that hotspots orbiting the black hole are additionally current in the radio observations,” stated Wielgus.

Scientists have launched an unprecedented picture of a black hole at the center of the Milky Way

  • What are black holes like Sagittarius A*, from the Event Horizon Telescope picture
  • “Astronomy unites and reveals that we will work collectively,” says the astronomer in the picture of the Milky Way’s black hole

The researchers now hope to have the ability to observe the flash of vitality that surrounds Sagittarius A* with the EHT and higher perceive the dynamics of the black hole.

“Maybe sooner or later we’ll be snug sufficient to say we ‘know’ what is going on on in Sagittarius A*,” the researcher added.

ALMA, a 66-antenna radio observatory in Chile’s Atacama Desert, is a component of the Event Horizon. — Photo: A. Marinkovic/X-Cam/ALMA (ESO/NAOJ/NRAO)

In 2019, with the identical variety of radio telescope that simulates the dimension of Earth, the undertaking’s astronomers launched the first picture ever recorded of a black hole, Pōwehi, situated at the center of the Messier 87 galaxy.

  • A daring concept about an “anti-universe” the place time runs backwards

What is a black hole?

A black hole is a variety of cosmic abyss that pulls every part that comes near it – inside a sure distance – in the direction of it.

Even gentle doesn’t escape being attracted to those objects. This is why black holes are literally black.

And this occurs as a result of the gravitational attraction of these our bodies is extraordinarily sturdy.

(VIDEO: What does a black hole sound like? NASA launched a ‘sonification’ of actual sound waves from one.)

NASA released a sound from a black hole

NASA launched a sound from a black hole

What are the sorts of black holes?

There are three sorts cataloged by astronomers: stellar black holes, intermediate black holes and supermassive black holes.

Stellar black holes are the smallest. They type when a large star dies, in an explosion referred to as a supernova. A large star sometimes has a mass (the quantity of matter in an object) between 10 and 100 occasions that of the Sun.

Location of the telescopes that make up the EHT community. — Photo: ESO/M. Kornmesser

Intermediate ones – between 100 and 100 thousand occasions the mass of the Sun – are usually not quite common. They are so laborious to search out that some scientists doubt they even exist. But final yr, a group of researchers introduced a report on the discovery of one of them.

Finally, supermassives inhabit the center of most galaxies in the universe, and often come up after their galaxies type, gobbling up every part of their path. As their identify suggests, they’re some of the heaviest objects in house, with plenty starting from thousands and thousands to billions of photo voltaic plenty.

What’s inside a black hole?

This is one of the nice mysteries of science. According to scientist Andrea Goetz – who research black holes and is one of the winners of the 2020 Nobel Prize in Physics for his work – nobody is aware of.

“We don’t know what’s inside a black hole — they’re the breakdown of understanding the legal guidelines of physics,” Gehz stated.

Astrophysicist Jakob van den Einden explains that many issues stay unknown on the subject of black holes. An lively space of ​​analysis, for instance, is that which investigates what occurs to a given materials when it falls into a black hole: what it appears to be like like, what its properties are, and why some of that materials is ejected into house in the type of jets.

“In reality, these processes that happen close to the occasion horizon are tough to look at and subsequently poorly understood,” notes the researcher.

What is Sagittarius A* and the place is it situated?

Sgr A* is a supermassive black hole, 4 million occasions extra large than the Sun. It additionally has a diameter about 18 occasions that of our star. (see infographic above).

It is parked in the constellation Sagittarius, which is seen in each the northern and southern hemispheres (the constellation, not the black hole).

Its discovery was revealed to the scientific group by astronomers Bruce Balik and Robert L. Brown in the Nineteen Seventies, initially as a vibrant radio supply in the center of the Milky Way.

(VIDEO: Fantastic explains how the first picture of a black hole was taken in 2019)

Find out how the first image of a black hole was taken

Find out how the first picture of a black hole was taken

Leave a Reply

Your email address will not be published.