[9] This GeV flare exhibited from DA 193 showed an exceeded binned gamma ray flux (1 x 10−6 ph cm−2 s−1) and was found to be extremely luminous (Lγ = (1.3 ± 0.4) x 1050 erg s−1).
When observing its hard gamma-ray spectrum, the flare in DA 193 was confirmed to be a rare sight.
In the optical-X-ray energy range, it shows an insignificant flux meaning its source went back to its quiescence state.
[11] Furthermore, DA 193 has a simple core-halo structure according to VLBI Observations, with the major axis of the halo having a 110° position angle.
[5] The central supermassive black hole of DA 193 is estimated to be (5.5 ± 0.9) x 109 Mʘ based on calculations of a single optical spectroscopic emission line information, derived from usage of C IV emission lines and acquiring empirical relations proposed by Yue Shen.