RX J1633.3+4718

RX J1633.3+4718 contains a radio loud active galactic nucleus (AGN) with a measured radio loudness parameter of R₅ = f_v(5 GHz)/f_v(4400Å) > 100.^[5] Furthermore, the AGN is hosted in a disk galaxy^[7] found interacting with a starburst galaxy.^[8] The two nuclei of both galaxies are about 8 kiloparsecs from each other.^[9]

Two unique components are found in RX J1633.3+4718, mainly a core component and a north component. Both of the components are connected with the two galaxies in the interacting system, with measured flux densities of 24.48 mJy and 0.79 mJy.^[9]

The core component is unresolved. It has an inverted radio spectrum whereas the spectral index is found steep.^[9] The core component is suggested to be significantly variable, hinting at the presence of jet activity in RX J1633.3+4718. This is further confirmed by the jet's high brightness temperature of 10^11.3 K^[10] and parsec-scale core-jet radio morphology when seen in high resolution observations at 1.7 and 5 GHz respectively.^[9][4] The north component on the other hand, is fainter and located at a position angle of 352°, away from the core by 3.8 arcsec.^[11]

The accretion disk of RX J1633.3+4718 is shown to have ultrasoft excess X-ray emission. It is lower than 0.5 KeV with the temperature of the galaxy's disk estimated to be 40 electronvolts based on a disc model for soft excess. The mass of the black hole in RX J1633+4718 is estimated to be 3 million M_☉^[8] while a bolometric luminosity of L_bol ≈ 1.51 × 10⁴⁴ erg s⁻¹ was derived from an unabsorbed flux measurement in a 0.001-100 KeV energy band.^[5]

• RX J1633.3+4718 on SIMBAD