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Does dark matter emit hawking radiation?
by tus88 6y ago
Does dark matter emit hawking radiation?
- doublesCs 6y agoIf it did, it wouldn't be dark.
- V1ndaar 6y agoFor all reasonable sizes of black holes, the flux due to Hawking radiation would be _so ridiculously low_ that it wouldn't change anything about our usage of the term "dark matter". In fact most dark matter models do assume some form of extremely weak interactions with normal matter or dark matter decay, which is how we try to detect dark matter. The effective flux from such interactions is a lot larger than Hawking radiation would be.
- xefer 6y agoThis is going back many years, but I seem to recall that one of the arguments against primordial black holes is that - assuming Hawking radiation is correct - we should see evidence of black holes evaporating if they are of the correct size, but that hasn't been seen. https://www.nature.com/articles/248030a0 https://www.nature.com/articles/248030a0