Baby Star can push bizarre stuff around Dwarf Galaxy • Register



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Dark matter could be even more elusive than previously thought, as scientists believe the mysterious material hidden in the heart of galaxies can be moved around with the power of heat.

The process described as "Dark matter heating" occurs in dwarf galaxies that are often found hovering around larger galaxies than the Milky Way. A group of International Astrophysics at the Surrey University, Carnegie Mellon University, and Ehh Zurich have taught a total of 16 dwarf galaxies split into two shapes: irregular, amorphous blob-like ones and spheroidal ones. All were in various stages of evolution, and the researchers estimated the amount of dark matter contained in each.

They found that older galaxies with slower star formation rates have dense cores of dark matter like younger galaxies. Older galaxies over 600 billion years have been worth more than a cloud of hundreds of millions of solar masses in their hearts, even though less than 3 billion years ago, they have "dark" dark cores. The results were published yesterday Monthly notices from the Royal Astronomical Society.

The researchers estimate that the trees' energy emitted by growing stars heat up the center of the galaxy, and offend the dark matter. As the star shape, the strong gasses of electromagnetic radiation sweep the gas and dust, leaving the cores with less load. The dwelling load means it is less gravitational, and the dark matter gives enough energy to move away from the galaxy's center.

"We found a truly remarkable relationship between the amount of dark matter in the centers of the tiny dwarfs, and the number of stars they have experienced over their lives," read Justin, lead author of the study and a physics professor. At the University of Surrey. "The dark matter in the centers of the star-forming dwarfs appears to have been & # 39; heated up & # 39; and pushed it out."

Dark matter makes up about 27 per cent of the universe, and although it is more abundant than visible barian matter, it still has to be recognized. It does not interact with light but is affected by gravity. The dynamic nature of the material has led the researchers to believe that dark matter is, in fact, "a cold, cold ice, fluid that can be artificially & # 39; heated up & # 39; and moved around". ®

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