NGC 3227

They are situated 50′ east of the well-known double star system Gamma Leonis (i.e. Algieba).

[8] As is typical of many AGN, the nucleus of NGC 3227 has been identified as a source of variable X-ray emission.

[9][11][12][13] The variability may be caused by variations in the density or ionization of gas and dust near the AGN that absorb the X-ray emission.

[14] The luminosity of the nucleus reached a maximum in 1977 when evidence suggesting long-lived one-sided or two-sided gas streams was obtained.

X-ray radiation of the central accretion disc is reprocessed in one to two days to be re-emitted in the optical spectrum.