Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
Snapshots from a simulation of Betelgeuse showing how convection dominates its surface blue patches show regions of Betelgeuse moving away from Earth, red regions are areas moving toward Earth.Recent observations of Betelgeuse, a star located in the constellation Orion, have created a mystery about the red supergiant. They suggest it is spinning much faster than a star its size should be able to.
"For most people, stars are just glowing dots in the sky. Our results highlight again that stars like Betelgeuse have such drastic boiling motions on the surface that we can see those motions in action in the telescopes," Ma told Space.com"As theorists, we are very excited that we can actually make predictions from our simulations that will be tested against observations in years to come.""Most stars are just tiny points of light in the night sky.
Yet, recent observations of Betelgeuse, particularly those made with the Atacama Large Millimeter/submillimeter Array located in Northern Chile, showed that Betelgeuse is rotating at around 11,200 miles per hour . That's around eight times as fast as a Jet Fighter. To analyze this precise, bubbly picture of Betelgeuse, the team developed a new post-processing computer package to simulate synthetic ALMA images and compare them with 3D radiation hydrodynamic simulations of nonrotating red supergiant stars. This revealed that a cluster of boiling bubbles rising on one side of Betelgeuse as another cluster falls on the other would create a dipolar radial velocity map.
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