Betelgeuse star is acting strange again, study finds
https://sputnikglobe.com/20230527/astronomers-detect-betelgeuse-star-acting-strange—again-1110622191.html
Astronomers detect Betelgeuse star is acting strangely – again
Astronomers detect Betelgeuse star is acting strangely – again
The red supergiant Betelgeuse continues to spin feverishly after a titanic coronal mass ejection 400 billion times that of our Sun in 2019. The star peaked at 156% of its original brightness in April.
2023-05-27T04:44+0000
2023-05-27T04:44+0000
2023-05-27T04:39+0000
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After the Great Dimming four years ago, scientists detected a sudden large increase in the brightness emitted by the red giant Betelgeuse, with the star at 142% of its normal brightness level. Observations of Betelgeuse over the past 200 years have proven that the star has periodically changed in brightness, with astronomers noting two distinct cycles of brightness, the longest of which was a 5.9-year cycle and a 400-year cycle. days. Betelgeuse, the largest such red giant star we know of, was usually the 10th-brightest star in the sky. This year, however, Betelgeuse has become the 7th brightest star. In April, officials detected a peak brightness reading of 156%. Officials have stressed that Betelgeuse is hardly on the verge of a supernova, with the red giant’s brightness likely to return to normal by the end of the decade. In fact, officials believe the aftermath of the Great Dimming was so profound that it’s likely causing the star to temporarily experience a cosmic peak in brightness. However, officials have pointed out that a Betelgeuse supernova could last for tens or even hundreds of thousands of years. The preprint of the paper’s findings can be accessed via the arXiv service.
https://sputnikglobe.com/20200122/mystery-gravitational-wave-sparks-debate-on-if-enigmatic-star-betelgeuse-is-ready-to-go-boom-1078101328.html
2023
News
en_GB
betelgeuse star, grand dimming, massive coronary ejections, star evolution, space exploration
betelgeuse star, grand dimming, massive coronary ejections, star evolution, space exploration
The red supergiant Betelgeuse continues to experience feverish activity after a coronal mass ejection 400 billion times that of our sun in 2019.
Observations of Betelgeuse over the past 200 years have proven that the star periodically changes brightness, with astronomers noting two distinct brightness cycles, the longest of which lasted a 5.9-year cycle and a 400-day cycle.
Betelgeuse, the largest such red giant star we know of, was usually the 10th-brightest star in the sky. This year, however, Betelgeuse has become the 7th brightest star. In April, officials detected a peak brightness reading of 156%.
“One of the most interesting things about Betelgeuse is that we’re watching the final stages of big star evolution play out almost in real time for us, which we’ve never really been able to study in such depth. before,” said Sara Webb, an astrophysicist from Swinburne University of Technology in Australia.
Officials have stressed that Betelgeuse is hardly on the verge of a supernova, with the red giant’s brightness likely to return to normal by the end of the decade. In fact, officials believe the aftermath of the Great Dimming was so profound that it’s likely causing the star to temporarily experience a cosmic peak in brightness.
The Great Dimming saw the star eject an incredible mass of its material – firstly, causing its upper layer to change dramatically and, secondly, allowing the material to cool in space and turn into a cloud of dust which obscured the star from the researchers’ view.
The event saw the star’s luminosity drop nearly 25%.
However, officials have pointed out that a Betelgeuse supernova could be tens or even hundreds of thousands of years away.
January 22, 2020, 09:06 GMT
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