| X-ray Masses for Clusters |
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| • | Fabricant,
Lecar, and Gorenstein: |
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| – | Bremsstrahlung
spectrum is roughly flat up to X- |
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| ray
energies, above which it cuts off exponentially. |
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| Cut-off
is related to temperature. The |
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| measurement
is a projection onto 2D space. |
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| Integrating
emissivity and converting to intensity: |
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