The nucleus of 1ES 1741+196 is active. It has been classified as an extreme blazar due to having a flat high energygamma ray spectrum[5] or alternatively, a high-energy BL Lac.[6] One accepted theory for this energy source in most active galactic nuclei is a presence of an accretion disk around its supermassive black hole. The mass of the black hole in the center of the galaxy is estimated to be 8.93 ± 0.70 Mʘ based on a fundamental plane measurement.[7]
Apart from that, 1ES 1741+196 has an isotopic luminosity of ~ 8.2 x 1043 erg s−1, making it less luminous amongst other TeV blazars.[8] When observed in very high energy (VHE) band, 1ES 1741+196 shows no evidence of strong flares.[4] Its X-ray spectrum is known to be variable compared to its steady gamma ray spectrum, with it rising up by a factor of 3 in terms of variability.[5]
The host galaxy of 1ES 1741+196 is an elliptical galaxy, one of the largest and brightest BL Lac host galaxies observed. It has a redshiftmagnitude relation of -24.85 and a galaxy effective radius of 51.2 kiloparsecs, which its overall luminosity distribution is obtained via a de Vaucouleurs profile. Additionally, there are two galaxy companions within the galaxy's position.[9] They have same redshifts,[10] with projected distances of 7.2 and 25.2 kiloparsecs.[9] Given 1ES 1741+196 has a flat luminosity profile, its position along an impact parameter towards the neighbors and a high ellipticity, this suggests tidal forces. Further evidence also shows a presence of a tidal tail between the companions, indicating the three galaxies are interacting.[9]
1ES 1741+196 has an extended radio jet towards the east direction with a projected position angle of °80.[11][12] The jet is known to be straight despite showing signs of a 5° bend towards south by 15-20 parsecs from its core.[13] Furthermore, the jet is known to be aligned well with a parsec-scale jet.[12]
