Using Doppler beaming of the EHT image of M87*, the authors derive a spin parameter a ~ 0.8 and an accretion rate between 4e-5 and 4e-1 solar masses per year.
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New estimates of the spin and accretion rate of the black hole M87*
Using Doppler beaming of the EHT image of M87*, the authors derive a spin parameter a ~ 0.8 and an accretion rate between 4e-5 and 4e-1 solar masses per year.