Earth Gamma-ray

'From time to time, this amazing object emits more than a hundred flares during which some 20 minutes, "said Loredana Vetere (Loredana Vetere), which coordinates the surveillance conducted by the Swift satellite, the University of Pennsylvania. 'During the most intense outbreaks of the total energy release exceeded the amount of power allocated to the Sun for 20 years .' Star known as sgr J1550-5418, located in the southern constellation Norma (Norma). Start Series moderate flares of this star fell on 3 October 2008, after which the outbreak at the time stopped and then resumed with renewed vigor on Jan. 22, 2009 in the form of emission rates. Due to the fast, one after another flares and gamma-ray spectrum, the astronomers carried the object to a class of 'repeaters soft gamma-ray' – it's just a sixth of the known objects of this class. In 2004 a giant flare that occurred on another repeater soft gamma-radiation was so intense it caused the ionization of the Earth's upper atmosphere, remote from it at 50.000 light years: additional information.

Using data obtained by X-ray telescope on board the Swift satellite (Swift), Holpern Jules (Jules Halpern), at Columbia University, registered the first 'light echoes' that has ever been observed on the soft repeater gamma radiation. Images (pictures), received from the radiation of the last series of outbreaks, demonstrate that, apparently, are a system of expanding rings (halos) surrounding the source. Outlines multiple rings of X-rays interact with the dust clouds at different distances. Scientists believe that the source of outbreaks is rotating around its own axis neutron Star – superdense remnants of a supernova size of a big city. With more in diameter is only about 12 miles, the neutron star enters a mass greater than the Sun. It is assumed that this specific neutron star is a 'magnetar' neutron star with an incredibly strong magnetic field.

Known theory of repeaters soft gamma-ray states that outbreaks are caused by "starquake" occurring on the surface of the solid crust magnetar. Because there are tremendous changes the magnetic field lines magnetar, the crust deforms under the action of a monstrously large magnetic forces, which often leads to the destruction of the cortex. When there is cracking in the crust, there are fluctuations in the crust with the formation of seismic waves, such as those generated during earthquakes, and ejected the flash of gamma radiation. Topics Still, nobody knows for sure all the details of what actually happens, and much work still needs to be done to understand these largely hyperactive star. Space Telescope NASA's Fermi (Fermi), registration of gamma radiation, the launch of which was accomplished in June 2008, is ideally suited for this work. 'The ability to control device Fermi Telescope (Fermi), recording gamma-ray bursts, spread a thin structure on the components in the framework of these phenomena will help us better understand how energy is released from magnetar '- said Chryssy Kuvelotu (Chryssa Kouveliotou), an astrophysicist at Goddard Space Flight Center to them. nasa Marshall in Huntsville (Huntsville), Alabama. Starting from January 22, the object is launched controlling device for measuring gamma-ray bursts, mounted on the telescope Fermi (Fermi), more than 95 times. NASA's Wind satellite, a joint mission of NASA-Suzaku Suzaku (Japan), and integral satellite, the European Space Agency also recorded outbreak of the object sgr J1550-5418.

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