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| There may be no exotic dark matter, just gas that is very difficult to detect without large, sensitive instruments in space. Planck can only image some of this "dim" matter by overlaying hundreds of images, which can't detect other baryons that do not cluster this way. | There may be no exotic dark matter, just gas that is very difficult to detect without large, sensitive instruments in space. Planck can only image some of this "dim" matter by overlaying hundreds of images, which cannot detect other baryons (mostly protons) that are not clustered this way. |
Cold Dark Matter
New Scientist 2017 11 October
There may be no exotic dark matter, just gas that is very difficult to detect without large, sensitive instruments in space. Planck can only image some of this "dim" matter by overlaying hundreds of images, which cannot detect other baryons (mostly protons) that are not clustered this way.
Hideki Tanimura at the Institute of Space Astrophysics in Orsay, France
A Search for Warm/Hot Gas Filaments Between Pairs of SDSS Luminous Red Galaxies
Detection of intercluster gas in superclusters using the thermal Sunyaev-Zel'dovich effect
Anna de Graaff at the University of Edinburgh, UK.