Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ The star of the famous Betelgeuse is smaller and closer to us than we know

The star of the famous Betelgeuse is smaller and closer to us than we know



Betelgeuse. Betelgeuse. Betelgeuse.

ALMA (ESO / NAOJ / NRAO) / E. O’Gorman / P. Kervella

If you are experiencing a horrible sensation of someone breathing in your neck, it may be Betelgeuse. The infamous star – the subject of a thrilling will-it-or-would-it supernova discussion earlier this year ̵

1; may actually be closer to Earth than we suspect.

Betelgeuse is a red supergiant and enormous compared to the size of our sun. A study published in The Astrophysical Journal this week shows some new calculations of mass and star distance, and gives us an estimate for when it is likely to go into supernova.

The speculation around the exploding Betelgeuse was kicked into high gear when the star went through some weird dimming and brightening episodes starting in late 2019. Scientists believe that dust cloud caused one of these events. “We found the second smaller event was likely due to star pulsations,” lead author Meridith Joyce said in a statement from The Australian National University (ANU) on Friday.

The science team used modeling to classify what happens to pulsations, following it in what fellow author Shing-Chi Leung of the University of Tokyo described as “pressure presses – essentially, sounds wave. ” This activity helped researchers determine the location of the star in its life cycle.

Scientists have previously estimated this to be the size of the Betelgeuse compared to our solar system, but have been modified by a new study that is estimated to decrease.

YAN

The very good that Betelgeuse is not in danger of going supernova any time soon. It could easily take 100,000 years to reach that stage. This is as suggested by other scientists.

The study also shakes our knowledge of star size. “The true size of the physical Betelgeuse has become a mystery – previous studies have suggested that it may be larger than the orbit of Jupiter. Our results suggest that the Betelgeuse only reaches two-thirds of it, which there is a radius 750 times the radius of the sun, “said co-author Laszlo Molnar of the Konkoly Observatory in Budapest.

With the size of Betelgeuse better dialed, the team has made a more accurate calculation of its distance from Earth, placing it around 530 light-years away, or about 25% closer than previously known. That is still far enough away that Earth will not be harmed by future Betelgeuse explosions.

“It’s still a big deal when a supernova kills. And it’s our closest candidate. It gives us a rare opportunity to study what’s going on with stars like this before they explode,” Joyce said.


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