In the text, it is stated that if dark matter consisted entirely of WIMPs of mass 60 GeV c 2 , the number of WIMPs passing through each square centimetre of the Earths surface would be of order 10 5 , with velocities of order 2 10 3 m s Use these assumptions to deduce the approximate value of the local density of dark matter and compare it to the average dark matter density of the universe

Question: In the text, it is stated that if dark matter consisted entirely of WIMPs of mass 60 GeV/c 2 , the number of WIMPs passing

In the text, it is stated that if dark matter consisted entirely of WIMPs of mass 60 GeV/c², the number of WIMPs passing through each square centimetre of the Earth’s surface would be of order 10⁵, with velocities of order 2 × 10³m/s. Use these assumptions to deduce the approximate value of the local density of dark matter and compare it to the average dark matter density of the universe.

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