Buzzfeed style headlines. Article includes this gem:
'The menagerie of dark matter candidates that might produce this kind of line include axions, sterile neutrinos, and "moduli dark matter" that may result from the curling up of extra dimensions in string theory.'
1) Assumption of dark matter
2) String theory
It's never hard to find a group of theoretical physicists willing to tag anything currently, poorly misunderstood as most likely an effect of dark matter and string theory.
And, of course, this will require a new observatory.
The headline perfectly summarizes that this observation is unexaplained by modern physics. You are right that associating this with dark matter and string theory is unfounded speculation, but there's nothing wrong with the headline.
Also, a new observatory is a good thing. Bring it on.
'The menagerie of dark matter candidates that might produce this kind of line include axions, sterile neutrinos, and "moduli dark matter" that may result from the curling up of extra dimensions in string theory.'
1) Assumption of dark matter 2) String theory
It's never hard to find a group of theoretical physicists willing to tag anything currently, poorly misunderstood as most likely an effect of dark matter and string theory.
And, of course, this will require a new observatory.