#NASA #GammaRay – NASA spots first ever gamma-ray binary in the neighbour galaxy, Watch Video : The US space agency NASA has first-ever gamma-ray binary in the neighbour galaxy using Fermi Gamma-ray Space Telescope. The gamma-ray binary was the most luminous binary ever seen by the scientists.
It was generated by LMC P3 which is dual-star system and contains a massive star and a crushed stellar core that interact to produce a cyclic flood of gamma rays, the highest-energy form of light.
“Fermi has detected only five of these systems in our own galaxy, so finding one so luminous and distant is quite exciting,” said lead researcher Robin Corbet at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
“Gamma-ray binaries are prized because the gamma-ray output changes significantly during each orbit and sometimes over longer time scales. This variation lets us study many of the emission processes common to other gamma-ray sources in unique detail.”
These rare systems contain either a neutron star or a black hole and radiate most of their energy in the form of gamma rays. Remarkably, LMC P3 is the most luminous such system known in gamma rays, X-rays, radio waves and visible light, and it’s only the second one discovered with Fermi. A paper describing the discovery will appear in the Oct. 1 issue of The Astrophysical Journal and is now available online.
LMC P3 lies within the expanding debris of a supernova explosion located in the Large Magellanic Cloud (LMC), a small nearby galaxy about 163,000 light-years away.