Gamma-ray telescope reveals new secrets of the Universe Facts
Each type of radiation from radio waves to gamma rays is helping scientists discover new facts about the universe and its electromagnetic spectrum. Some wavelengths are best suited for the study of black holes, the other for new stars and planets, and some of the early stories reveal the mystery of the cosmos. For us, the most powerful type of radiation are studied gamma rays.
With the space telescope Fermi, studying gamma spectrum, NASA scientists were able to get the first full sky map of high-galaxies at the edge of the electromagnetic spectrum with a value of 10-100 billion eV. With the naked eye we can see the light, consisting of photons with energies of 2-3 eV. Fermi range of 20 million-300 million eV, which is not available to ordinary lens telescopes.
Video: Fermi began work in June 2008. Prior to that, scientists knew only four photon source to describe the range of energy. During the three years of the new telescope revealed nearly 500 such sources.
In the data from the new telescope, many mysteries. One of them is a giant domed structure in the middle of the Milky Way at a distance of 20,000 light-years from the galactic plane. Also of interest are BL Lac objects, giant black holes, and rapidly rotating neutron stars, caused by the explosion of supernovas and pulsars.
Fig. The recently discovered gamma-dome extend over 50,000 light-years per round trip, which is equal to half the diameter of the Milky Way. The first signs of these objects have been detected in X-rays the German ROSAT space mission in 1990. Gamma rays, fixed Fermi, far beyond the galactic plane.
Fermi scans the sky every three hours, so that scientists can observe the development of the universe in detail. In the next few years, the telescope will continue to search for new information about the objects found and will try to answer the question of why they produce such a strong flow of energy. With the Fermi astrophysics from the U.S., France, Germany, Italy, Japan and Sweden will further explore the nature of the giant black holes, pulsars, cosmic rays and the new cosmic matter.