SDSS J135646.10+102609.0

[3][4] The galaxy has a luminosity of Lbol ≈ 1046 erg s−1 with an estimated black hole mass of M ~ 108 MΘ.

Its host is a massive early-type galaxy or an ETG for short, with a position angle of 156 degrees.

According to B-I color map of the galaxy using HST/WFC 3 images, astronomers found a dust lane crossing its nucleus with its position angle matching with the oxocarbon major axis.

[3] Further investigations also shows the presence of soft X-ray emission around the quasar nucleus of SDSS J135646.10+102609.0, extending by 20 kiloparsecs (kpc).

According to long-slit observations, it contains two [O III] λ5007 emission knots proportional to the two nuclei seen in near-infrared imaging suggesting the double peaks are produced by a dual AGN.

However when the extended [O III] emission and nuclei were observed again, this creates a speculation the double peaks are only powered by a single AGN.