“If... then my old theory is completely toast,” says astrophysicist Steinn Sigurdsson of Pennsylvania State University. “This is a really nice piece of work.”
Nice Nature paper coming out tomorrow by Jay Strader et al
on a pair of flat spectrum ultra-faint radio sources in the core of M22.
The sources are consistent with being ~ 20 solar mass black holes, accreting at a low rate from, well, something.
Maybe...
Best candidates yet in the Milky Way globulars.
M22 has a somewhat unusual structure (massive fluffy core) in a way that several authors have suggested might be a signature of black…
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