News tagged with gamma rays

Radio telescopes unravel mystery of nova gamma rays

Highly-detailed radio-telescope images have pinpointed the locations where a stellar explosion called a nova emitted gamma rays, the most energetic form of electromagnetic waves. The discovery revealed a probable mechanism ...

dateOct 08, 2014 in Astronomy
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The evidence for pair-instability supernovae

A supernova is a stellar explosion. They can occur when a large star exhausts its ability to fuse hydrogen into higher elements, and its core collapses. The resulting rebound rips apart the outer layers of the star, creating ...

dateOct 06, 2014 in Astronomy
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How gamma ray telescopes work

Yesterday I talked about the detection of gamma ray bursts, intense blasts of gamma rays that occasionally appear in distant galaxies. Gamma ray bursts were only detected when gamma ray satellites were put into orbit in the ...

dateSep 22, 2014 in Astronomy
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The frequency of high-energy gamma ray bursts

In the 1960s a series of satellites were built as part of Project Vela.  Project Vela was intended to detect violations of the 1963 ban on above ground testing of nuclear weapons.  The Vela satellites were designed to detect ...

dateSep 22, 2014 in Astronomy
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