High radio fluxes of  PKS2023-07 measured  with RATAN-600
S. A. Trushkin, N. A. Nizhelskij, P. G. Tsybulev (SAO RAS, Russia)
After the AGILE detection the gamma-ray flare from the quasar PSK2023-07 (correctly PKS B2022-077) by Piano et al, ATel #8879 we carried out its observations with the RATAN-600 radio telescope SAO RAS. The measured flux densities are equal to 1.50, 1.96, 2.54 Jy at 4.8, 11.2, 21.7 GHz respectively on 1 Apr 2016. The errors are smaller 5 % from the fluxes. The spectrum is well fitted by the inverted power law: S_nu[Jy]=0.08 nu^+0.35[MHz]. The former flux densities points (PKS, NVSS, PMN, UMRAO, Planck, VLSS) are collected in CATS database and show that the current fluxes are by a factor 2 higher than the former measurements with RATAN-600 in March 2008. Thus PKS2022-077 is in a bright radio flare also. Observations of the quasar at millimeter wavelengths are strongly encouraged.
radio,millimeter,gamma ray,agn,blazar,quasar