Science

Our galaxy's supermassive black hole is acting weirder than normal

While it is normal for the supermassive black hole to fluctuate slightly in brightness, the researchers found Sagittarius A*-which is four million times the mass of the sun-had gotten 75 times brighter than normal. This is the brightest state the black hole was ever seen in, taking even astronomers by surprise.

A burst of radiation has captured the attention of astronomers observing a supper massive black hole at the center of our galaxy. He further said that the black hole became so bright that he first mistook it to be star S0-2. "I knew nearly right away there was probably something interesting going on with the black hole", the report said quoting Do. It's under constant observation with instruments like the WM Keck Observatory in Hawaii used by the UCLA team. The team there managed to capture the unusual brightening and condensed two hours into a few seconds timelapse.

Do told ScienceAlert they are now waiting for data from other telescopes, including NASA's Spitzer and Chandra, to better understand what might have happened with Sagittarius A*.

The light that can be seen in the video is actually from the gas and dust swirling around the black hole, and not the black hole itself.

The first frame - taken right at the beginning of the observation - is the brightest, which means Sgr A* could have been even brighter before they started observing, Do said. Another team of astronomers operating the European Southern Observatory's Very Large Telescope have also measured the light-stretching effects of the black hole (they call the star S2, but it's the same star).

Scientists say they weren't aware of anything travelling close enough to create that kind of friction, however.

More news: Fortnite world champion Kyle 'Bugha' Giersdorf swatted during livestream

The other possibility according to Tuan Do, is the star S0-2, which had passed close to the black Hole previous year, it may have changed the way gas flows into the Back Hole, so more gas is falling on it, leading it to become more variable, as per the report.

SO-2 began to make its closet approach previous year and came 17 light-years away from Sagittarius A.

Supermassive black holes are common in the centers of galaxies and may generate the most energetic phenomena in the known universe. The findings so far are presently in press with The Astrophysical Journal Letters and is available on arXiv.

What makes it remarkable is that Sagittarius A* is normally relatively dim.

A star called S0-2 is approaching the black hole. Black holes do not emit radiation that can be detected by observers on Earth. There were no cosmic fireworks at the time, but we could be seeing a delayed reaction. Black holes themselves don't emit any radiation that can be detected by our current instruments, but the stuff nearby does when the black hole's gravitational forces generate enormous friction, in turn producing radiation. The ejection of matter allows this loss to occur.

The captured material needs to lose heat and angular momentum before being able to plunge into the black hole.



Like this

loading...
loading...

Latest


13 August 2019
United States will delay tariff hike on Chinese-made cell phones, toys
The Dow gained more than 400 points, or 1.7%, rising to 26,339 at 10:40 a.m. Trade-sensitive technology shares post strong gains in early trade.

13 August 2019
Sebastian Telfair was sentenced to 3 1/2 years in prison
The Trail Blazers fined Telfair in 2006 after a loaded gun was found on a team plane, reportedly in a pillowcase belonging to him. On Monday, he complained in court that he was being penalized too harshly for a "victimless crime".

13 August 2019
Boy dies following Orihuela Costa pool tragedy
The boy was found floating in the Cabo Roig urbanisation pool in Orihuela, Alicante at approximately 9.15am this morning. Medics continued to perform life-saving procedures on the child until he was stabilised some two hours later.

13 August 2019
Iraq rejects Israeli participation in US-led naval mission in Gulf
Katz said Israel's participation would help to contain the Iranian threat as well as boost ties in the Gulf region. Britain and the USA have already joined forces to set up a naval security mission in the area.

13 August 2019
Liam Hemsworth addresses Miley Cyrus split on Instagram
After years of dating, they took the big step but now they have made a decision to take individual paths in their lives. The former couple exchanged vows at its home in Nashville, Tenn., on December 23, after dating on and off for 10 years.

13 August 2019
Verizon to sell Tumblr
In addition to WordPress, Automattic also owns e-commerce platform, WooCommerce, and note-taking application Simplenote. But according to The Wall Street Journal , the platform's ban on adult content will remain in place.

13 August 2019
Manchester United target spotted at Bayern Munich for medical ahead of transfer
He also helped Croatia to the 2018 World Cup final, which they lost to France. Bayern launch their Bundesliga season at home to Hertha Berlin on Friday.

13 August 2019
New Zealand Received over 10,000 Firearms in Gun Buyback Program
Since then, 10,242 firearms have been handed into police, with an additional 1,269 firearms handed in under amnesty. Anyone who possesses a firearm that is now barred by New Zealand law could face up to five years in prison.

13 August 2019
Liverpool will be without Alisson for the "next few weeks"
Alisson suffered a calf injury while taking a goal kick during last Friday's opening 4-1 Premier League win over Norwich City . Liverpool travel to Istanbul this week, to face Premier League rivals Chelsea in the Super Cup final.

13 August 2019
Nightdive Studios confirm System Shock 2 Enhanced Edition
Released back in 1999, System Shock 2 was a role-playing survival horror game developed by the former BioShock studio Irrational Games.