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Swarm of hydrogen clouds flying away from center of our gala

 
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PostPosted: 10.01.2018 22:43    Post subject: Swarm of hydrogen clouds flying away from center of our gala Reply with quote

Swarm of hydrogen clouds flying away from center of our galaxy

https://m.phys.org/news/2018-01-swarm-hydrogen-clouds-center-galaxy.html


""The signature of these clouds being blown out of the Milky Way is that their velocities are crazy," said Lockman. "Gas motions in the Milky Way are usually quite regular and are dominated by the orderly rotation of the Galaxy. In the Fermi Bubbles we see clouds right next to each other on the sky that have velocities differing by as much as 400 kilometers per second."

According to the researchers, the most likely explanation for these wildly differing velocities is that they're traveling within a cone of material that is expanding upward and away from the galactic center, so the front portion is coming toward us and the back part is flying away.

By modeling the distribution and velocities of the clouds, the astronomers found that they would fill a cone stretching above and below the galaxy to a distance of at least 5,000 light-years from the center. The clouds have an average speed of about 330 kilometers per second.

Di Teodoro notes: "What is especially puzzling is that we have not yet found the edge of the swarm of clouds. Somewhere above the galactic center, the hydrogen clouds have to dissipate or become ionized. But we have not found that edge yet, so there's still a lot to learn.""


Paljln on tyypeillä opittavvoo.

Tästä olisi hyvä työntyä etteenpäin.

Sisältä ulospäin.

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