December 10, 2022

Bubble found dragging around black hole with ‘mind-blowing speed’

In May, the Event Horizon Telescope cooperated shocked the world When I released a picture of what appears to be a file Fire-stained French cruller. Actually, this wasn’t a donut. It was a mind-bending picture of Sagittarius A*, the supermassive black hole that anchors our galaxy, its gravitational pull silently wiping every star, planet, and asteroid within.

It was the first time we’ve ever laid eyes on her majesty – a massive moment in itself – but the scientists aren’t done yet. There was a lot to learn from Sgr A*.

From the point of view of the earth, About 27,000 light-years away from this black holeIn fact, astronomers have been vigilantly observing and studying the void in an attempt to decipher exactly how the Great Milky Way Engine operates. And last month, a crew working with a powerful radio telescope called the Atacama Large Millimeter/submillimeter Array Observatory collected some new clues.

After checking the ALMA data recorded along with EHT observations of Sgr A*, while performing the massive imaging of the black hole, the team discovered what it calls a “hot spot” fluttering around the cliff. They say this spot looks dull and bright while traveling clockwise around Sgr A*.

“We think we’re looking at a hot gas bubble orbiting Sagittarius A* in an orbit similar in size to that of Mercury, but making a full loop in just about 70 minutes,” Maciek Wielgus, of the Max Planck Institute for Radio Astronomy in Germany and lead author of the study said. Published in the Journal of Astronomy and Astrophysics, in a statement.

For context, it takes Mercury 88 Earth days to make one orbit around the sun—and, Approximately 29 miles per secondThis orb is egg-shaped faster planet.

Remarkably, the hot ball of gas could make its way completely around Sgr A* in just 70 minutes, Wilgus said, “This requires a mind-blowing speed of about 30% of the speed of light.”

In addition, the researchers believe that the bubble’s orbit lies at a distance from the void five times greater than what is known as the black hole’s event horizon. Basically, there’s a barrier around every black hole that light can’t escape. It points to the fixed boundary between our visible universe and whatever lies within the monster. This is the event horizon.

What is the story of this bubble?

Study scientists believe that the newly existing hot spot, according to the European Southern Observatory, is associated with bursts, or flares, of X-ray energy emitted from the center of the Milky Way. Indeed, such flares have been detected in the past by both X-ray and infrared observations of arc A*, but this is the first time anyone has detected them with radio telescope data – and with a “very strong signal” at that.

It is possible that the reason we see this energetic activity at different wavelengths – X-rays, infrared and radio – is that their properties change over time.

“These hot spots detected at infrared wavelengths may be a manifestation of the same physical phenomenon: When infrared hot spots cool, they become visible at longer wavelengths, such as those observed by ALMA and EHT,” Jesse Voss, He holds a Ph.D. .Dr. A student at Radboud University in the Netherlands and co-author of the study, in a statement.

The dark blue, dark gray, and burnt orange hues show a star-speckled view of the Milky Way's core from a side angle.

This visible light, wide field view shows rich star clouds in the constellation Sagittarius. It is directed towards the center of our galaxy, the Milky Way.

ESO and Digitized Sky Survey 2. Acknowledgments: Davide De Martin and S.Guisard

Moreover, the team’s new study results also appear to be in line with another long-standing hypothesis: that glowing flames from the center of the Milky Way are rooted in magnetic interactions caused by the rotation of hot gas near Sgr A*.

“We have now found strong evidence for a magnetic origin for these flares and our observations give us an idea of ​​the engineering of the process. The new data are very useful for building a theoretical explanation for these events,” Monika Mościbrodzka, of Radboud University and co-author of the study said in a statement.

The team explains that these explanations could include a peek into the black hole’s elusive magnetic field as a whole, or insight into the environment surrounding the strange hot region. In the end, maybe they can paint a picture of what truly It takes place in the heart of the Milky Way – the chaotic, quiet place where a monstrous black hole lives.

“In the future we should be able to track hotspots across frequencies using coordinated multi-wavelength observations with both GRAVITY and ALMA,” said Ivan Marti Vidal of the University of Valencia in Spain and co-author of the study. Statement, referring to other ESO astronomy tools.

“The success of such an endeavor would be a real milestone for our understanding of the physics of flares at the galactic center.”