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sciguy52 t1_iwxi44e wrote

Reply to comment by paulfromatlanta in Dark Matter as an Intergalactic Heat Source. Spectra from quasars suggest that intergalactic gas may have been heated by a form of dark matter called dark photons. by MistWeaver80

They are talking about dark photons. Hypothetical photons that do not act like known observable photons. Might interact with dark matter. Or possibly regular matter as they propose here.

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SimoneNonvelodico t1_iwyblfi wrote

Honestly "dark photons" makes zero sense. If they're photons they're excitations of the EM quantum field, if they're of some other field they're just a different particle. I guess it could mean they're from a massless field, like photons and unlike regular dark matter (whatever that is).

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