Tag: gamma ray astronomy
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How a dark matter signal can vanish
Last year, scientists looking at data from the orbiting Fermi gamma ray observatory announced they found a possible signal of dark matter particles annihilating each other near the center of the Milky Way. The signal consisted of a spike in the number of gamma ray photons around 130 billion electron volts (130 GeV) in energy.…
Matthew R. Francis
Galileo's Pendulum 