NASA Goddard Space Flight Center   Geodesy and Geophysics Laboratory

Supermassive black hole 4C+35.28

Object 4C+35.28, also known RFC J1215+3448, 1213+350, 6C~1213+3504 with position 12:15:55.598593 ± 0.000003 in right ascension and +34:48:15.19900 ± 0.000055 declination at a distance of 5530 Mpc (redshift 0.857 ± 0.001) hosts two components at separation 37 mas or 290 parsec. Most likely these are two supermassive black holes.

Properties of 4C+35.28

High resolution radio images of 4C+35.28 synthesized with VLBI

Explanation:

• radplot means dependence of calibrated flux density on projection of the baseline vector expressed in wavelengths averaged over all spectral channels of a given intermediate frequency.
• uva data means a priori calibrated visibilities.
• uvs data means a self-calibrated visibilities averaged over all spectral channels of a given intermediate frequency as the output of hybrid image synthesis process.