Direct Observations
We observed galaxies M81 and M82 through a 12in Newtonian reflecting telescope:
This is spiral galaxy
M81 photographed using visible light. Through the 12in telescope the galaxy
appeared as a small patch of bright sky.
This is an image of
M81 made in the x-ray spectrum of light. George Lake proposed that
Weekly Interacting Massive Particles (WIMPs) weighing around several GeV
would emit gamma rays as a result of their annihilation (Lake, 39).
Note the nearly homogeneous distribution of x-rays from M81 compared to
the bulge centered distribution of visible light.
This is a visible light
image of galaxy M82 located near M81 in the celestial sphere. M82
is an irregular galaxy that has no specific shape.
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