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    Roman Space Telescope will use a century-old idea from Einstein to probe the nature of mysterious dark matter
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    Roman Space Telescope will use a century-old idea from Einstein to probe the nature of mysterious dark matter


    Roman Space Telescope will use a century-old idea from Einstein to probe the nature of mysterious dark matter

    https://www.space.com/astronomy/roman-space-telescope-will-use-a-century-old-idea-from-einstein-to-probe-the-nature-of-mysterious-dark-matter

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    1. TheAngledian on

      Roman is going to be such an excellent instrument (though I wish there would be a stronger push for another Hubble-like UV telescope, but the sexy research now is on high redshift stuff and the IR regime).

      I feel like saying they will “pin down the particle nature of dark matter” is a bit generous. Reading the paper I am skeptical that they can infer so much substructure information from the expected Roman images. I do not work on strong lensing, but I can imagine there will be difficulties in separating lens structures from other possible features. Especially since dark matter subhaloes should create *asymmetric* features.