Astronomers first saw the structure of the large protostellar disk G358-MM1. This was reported by TASS, with reference to the press service of the Ural Federal University, whose specialists participate in the work of an international group of scientists.
A protostellar accretion disk is an interstellar gas structure that is slowly shrinking under the influence of gravity. When the pressure and temperature in the bowels of the cloud rise to a critical value, a thermonuclear reaction ignites. In the early stages of evolution, such objects may have had a complex structure outside of the sphere.
Until now, scientists did not know what structure the disks of large protostars had. “We are now closer to understanding this process. We were able to see and prove that the disk around a large protostar actually has a structure consisting of four spiral arms with matter falling onto the star,” said Andrey Sobolev, co-author of the work. and matter was transferred through spiral formations to the inner region of the disk, from where it falls directly to the star. For the study, a new method of “excitation wave mapping” was used, in which a burst of stellar radiation scanning the disk material causes methanol masters to glow. He said it was extremely difficult.
Studying the structure of protostars is crucial to understanding the evolution of the universe and the solar system.
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