Astrophysics (Index)About

IRAS 13224-3809

(active Seyfert galaxy with well-studied SMBH)

IRAS 13224-3809 is a Seyfert galaxy on the order of a million light-year distant. Its X-ray emission shows striking variability and tts supermassive black hole has been studied with reverberation mapping, yielding estimates of the SMBH size and mass. One mass determination was 1.9×106 solar masses, corresponding to a Schwarzschild radius of 8 solar radii, which should be the same order-of-magnitude as the radius of its event horizon, but somewhat different due to any rotation.

Further reading: 13224-3809
/Lookback Years
.066273Mpc890MlyIRAS 13224-3809
Coordinates:IRAS 13224-3809