26-02-08

How can Glast help us find dark energy and dark matter?

Here is the answer from David Band ; nasa project Glast.GLAST may see gamma-ray line emission from the decay or annihilation of the sub-atomic particle(s) that make up the dark matter. In some theories the decay or annihilation of these particles emits gamma rays of a specific energy, and should occur in regions where many of these particles are clustered together.This clustering will result from the gravitational attraction of the dark matter.Also, gamma ray emission from regular matter will be greater in regions where the dark matter has caused matter to accumulate.glastI am not aware of any GLAST observations that will have a direct connection with dark energy. But I would not be surprised if someone found one!

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