In addition to seeing a gamma-rays from the disk of the Milky Way, the Fermi Gamma-ray Space Telescope also discovered huge lobes of gamma-ray emission above and below the plane of the Milky Way. These lobes of gamma-ray emitting gas extend more than 25, light years above and below the plane of the Milky Way and astronomers are still working to figure out their nature and origin.
Advanced Basic Multiwavelength Milky Way The most prominent feature of the Milky Way that we see, as we look out from our vantage point embedded in the galaxy's disk, is the vast number of stars that blend together in our view and form the band of the Milky Way in dark skies. Radio Radio emission reveals a few different things about the Milky Way depending on which part of the radio spectrum we observe. Tell me more about spectra and what we learn from them Intensity of the radio continuum emission from the disk of the Milky Way at MHz top and 2.
These radio wavelengths show astronomers where electrons are being accelerated through a variety of processes. Credit: Haslam, et. These images show the amount of atomic top, 1. Infrared views of the plane of the Milky Way. Optical view 0. Image courtesy of Mellinger, A. The black bands are places where these is no data. Credit: D. Schiminovich Columbia , M. Martin at Caltech. Soft X-ray view 0. His best guess is still that the radio source is some kind of dense object accreting surrounding material, perhaps a large black hole or a black hole in an unusual environment.
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Current students. Staff intranet. Type to search. All content. Strange radio waves emerge from direction of the galactic centre. A signal from deep in the Milky Way is tantalising scientists. Now astronomers are on the search for more evidence of what type of object could be emitting them.
They turned to the Parkes radio telescope and again failed to detect the source. Sydney Institute for Astronomy Find out more. In some spirals, a wave organizes the stars in the center into a bar. The arms of barred galaxies spiral outward from the ends of the bar. The Milky Way falls into this class of spirals. A second class of galaxy is the ellipticals. Like spirals, they are named for their shapes: they look like fat, fuzzy footballs.
Instead of spreading out into a thin disk, as they do in spirals, the stars in ellipticals wrap completely around the galaxy's heart in all directions. The largest galaxies in the universe are giant ellipticals. They can contain a trillion stars or more, and span as much as one million light-years -- about 10 times the diameter of the Milky Way. Like many large spirals, most of them appear to contain "supermassive" black holes at their hearts -- star-gobbling monsters that are as much as three billion times as massive as the Sun.
The final class of galaxies contains a hodge-podge of shapes -- anything that looks neither spiral nor elliptical.
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