May 27, 2022

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They discover a giant cavity in the Milky Way

They discover a giant cavity in the Milky Way

A group of astronomers has discovered a giant cavity in Milky Waysurrounded by two nebulae, Perseus and the bullThat arose after at least one star exploded, according to a study published Wednesday.

Molecular clouds of Perseus and the bullAs it is known scientifically, it has been examined by astronomers for a long time, first of all because it is relatively close to Earth, at a distance of 500-1000 light-years. A walk among the stars, considering the diameter of the Milky Way is 80,000 light-years.

But these two nebulae also have another benefit: they are arrays of stars, which was formed thanks to the mixture of molecular gas and galactic dust.

For a long time, astronomers believed that Perseus and Taurus were connected by some kind of thread. A note later ignored.

“The funny thing is that we found out that they are linked, but not in the way we imagine, but through a giant gap,” he told AFP. Shmuel Bialy, conducted by research from the Harvard Center for Astrophysics and the Smithsonian.

star powder

With the help of the European Space Telescope JayaUsing calculation tools and 3D image generation, the scientists were able to create a map of the cavity, called Per-Tau.

You have to imagine Per-Tau as a “sort of a sphere with an empty inside” Bialy explains, a “super bubble” with a diameter equivalent to the previously mentioned distance between Earth and my “array” of nebulae: about 500 light-years.

Its outer shell will be partially formed by Perseus and the bull.

Inside there is little stardust “but a very weak density compared to that of the surrounding clouds,” cosmologist and astrophysicist Torsten Enslin, associate professor at the Max Planck Institute for Astrophysics, told AFP.

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Ensslin and Bialy co-authored the Per-Tau study, which was published in Astrophysical Journal Letters.

and fellow Bialy, Kathryn Zucker An astrophysicist and postdoctoral researcher, she anticipates another study, in which she explains how scientists have, for the first time, been able to recreate real, not simulated, 3D views, allowing theories to be tested through direct observation.

“We think (Per Tau) was caused by a supernova, a huge explosion that released those gases and formed those clouds,” Bialy explains. It even calls for multiple supernovae to explode.

When it exploded, one or more dying stars released and pushed out the gases they bathed in, and those gases formed that cavity between 6 and 22 million years ago.

(Information from AFP)

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