Evidence shows strong outflowing winds responsible for the “Fermi bubbles.” A scientist from Tokyo Metropolitan University has shown that large gamma-ray emitting bubbles around the center of our galaxy were produced by fast-blowing outward winds and the associated “reverse shock.” Numerical simu
Evidence shows strong outflowing winds responsible for the “Fermi bubbles.”
The universe is full of massive celestial objects which are yet to be explained. One of these is the “Fermi bubbles,” so-called because they were first discovered by the Fermi Gamma-ray Space Telescope in 2010. These bubbles are enormous gamma-ray emitting regions that extend either side of the center of our galaxy over approximately 50,000 light-years, protruding out from the plane of the galaxy like balloons as shown in the figure.
Now, Professor Yutaka Fujita from Tokyo Metropolitan University has presented theoretical evidence demonstrating how such objects may have been formed. Since their discovery, many hypotheses have been put forward about the formation of the Fermi bubbles, including an explosive activity of the central supermassive, winds from the black hole, and steady star formation activity.
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