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Stand in the middle of the room and spin with you arms at your side. Now suddenly spread you arms. You will notice a marked reduction in rotation speed, not an increase.
Who can explain this for me?
Wait a minute. If you emit material wouldn't you spin slower . Take the arm waving example from the article. Stand in the middle of the room and spin with you arms at your side. Now suddenly spread you arms. You will notice a marked reduction in rotation speed, not an increase. Who can explain this for me?
Wait a minute. If you emit material wouldn't you spin slower . Take the arm waving example from the article. Stand in the middle of the room and spin with you arms at your side. Now suddenly spread you arms. You will notice a marked reduction in rotation speed, not an increase. Who can explain this for me?
Wait a minute. If you emit material wouldn't you spin slower . Take the arm waving example from the article. Stand in the middle of the room and spin with you arms at your side. Now suddenly spread you arms. You will notice a marked reduction in rotation speed, not an increase. Who can explain this for me?
Making an entire star suddenly spin twice as fast on its axis would require a staggeringly, absurdly huge transfer of energy and angular momentum. The mass ejected from Betelgeuse was much, much smaller than the star's total mass, and would not have been capable of causing such an effect.
I'd really love to see major space event like Beetlegeuse blowing up during my insignificant life-span
Wait a minute. If you emit material wouldn't you spin slower . Take the arm waving example from the article. Stand in the middle of the room and spin with you arms at your side. Now suddenly spread you arms. You will notice a marked reduction in rotation speed, not an increase. Who can explain this for me?
Probably it's got something to do with the Great Collapsing Hrung Disaster
I'd really love to see major space event like Beetlegeuse blowing up during my insignificant life-span
Do we have models that say what it would look like before an imminent explosion? As in "just before it pops, the undulations are {such-and-such} for 1 month"
"Evidence for a large cool spot: What could lead to a temperature drop by 170 K? It should be noted that the lowest temperature obtained on 31-01-2020, Teff = 3476 K, would be one of the coolest effective temperatures measured for a Galactic RSG... According to the stellar evolution theory, the Hayashi limit (the lower limit of Teff for stars in hydrostatic equilibrium) for a star like Betelgeuse is ∼3500 K (see, e.g., Figure 6.5 in 16). Nevertheless, the significance of the Hayashi limit for RSGs is still open to debate. It has been suggested that the stars moved to the forbidden region of the Hertzsprung-Russell (H-R) diagram are not able to maintain their hydrostatic equilibrium and this may actually drive episodes of enhanced mass loss."
It seems could have broken the Hayashi limit that describes a star's lowest possible surface temperature at a given mass or radius for Red Super Giants.
In those cases it seems either:
- Would go Supernova
- Would have mass loss that would cause the star to shrink back within the Hayashi limit. So no Supernova for you...
tl;dr Betelgeuse, the closest red giant star to Earth, is exhibiting unusual behavior. Normally, the star cycles between bright and dim states every 400 days. However, between late 2019 and early 2020, it went through a "great dimming" due to a dust cloud that obscured our view of the star. Currently, Betelgeuse is glowing at 150% of its normal brightness and is cycling between bright and dim states every 200 days, w…
I would like Theguardian to expose a standard deviation for this kind of data (because I have read from other sources that nobody has the data, it easily may be tomorrow).