At the moment, there are various representations on different search engines depicting Fermi bubbles towering above and below the galaxy.
Stanford Scientists, along with the Department of Energy’s SLAC National Accelerator Laboratory, analyzed the data of NASA’s Fermi Gamma ray space Telescope, which was gathered around four years earlier. Along with this data, the scientists also found the other data gathered from experiments to create the most detailed portrait of two towering bubbles that spread and stretch tens of thousands of light years below as well as above our galaxy.
The bubbles that shine brightly in energetic gamma rays were found almost four years ago by Harvard astrophysicists’ team, led by Douglas Finkbeiner, the man who combed through data from the main instrument of Fermi, the Large Area Telescope.
According to the new portrait that has been explained in a paper, there are various puzzling features of the towering bubbles. The portrait has been accepted for publication by Astrophysical Journal editors.
The outlines of bubbles are very sharp and the bubbles themselves glow in uniform gamma rays over their surfaces. Size of these bubbles is another puzzle.
Malyshev’s co-lead, KIPAC postdoctoral researcher, Anna Franckowiak, stated that the work of researchers is very much challenging, when it comes to study these bubbles. She said, “Since the Fermi bubbles have no known counterparts in other wavelengths in areas high above the galactic plane, all we have to go on for clues are the gamma rays themselves.”
She even said that creating the portrait was an extremely difficult task for the researchers. “We had to remove all the foreground gamma-ray emissions from the data before we could clearly see the bubbles.”
The scientists as well as researchers are looking forward to have their questions answered by Fermi, which is still gathering everything it can for them.
Copyright 2014 Rayhawk Review