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Astronomers measure and model a blazing gamma-ray source

6 June 2016 Astronomy Now

A blazar is a galaxy whose central supermassive black hole emits a powerful jet of high velocity particles aimed almost directly at Earth. Astronomers have measured and successfully modelled the very high energy gamma ray emission from a blazar known as 1ES 1741+196 using VERITAS, the Very Energetic Radiation Imaging Telescope Array System.

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NASA’s Fermi satellite detects first gamma-ray pulsar in another galaxy

13 November 2015 Astronomy Now

Researchers using NASA’s Fermi Gamma-ray Space Telescope have discovered the first gamma-ray pulsar in a galaxy other than our own. Known as PSR J0540-6919, the object sets a new record for the most luminous gamma-ray pulsar known. The pulsar lies in the outskirts of the Tarantula Nebula in the Large Magellanic Cloud, a small galaxy that is located 163,000 light-years away.