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RATAN-600 data for Fermi J0035+6131

ATel #8718; S. A. Trushkin, N. A. Nizhelskij, A. Erkenov (SAO RAS, Russia)
on 21 Feb 2016; 18:24 UT
Credential Certification: Sergei Trushkin (satr@sao.ru)

Subjects: Radio, Millimeter, Far-Infra-Red, Infra-Red, Optical, Gamma Ray, AGN

Referred to by ATel #: 8789

After the detection of the Gamma-ray source Fermi J0035+6131 (Atel#8554), we have carried observations of the most probable radio source B0032+6130 (TXS, GB87, GB6, NVSS, VLSS,...) with the RATAN-600 radio telescope. Probably this source was in the first time detected in Ohio Fifth survey (Brundage et al., 1971) as OB+654 with flux 0.22 Jy at 1415 MHz. Later it was detected in the Galactic plane survey by Gregory and Taylor (1986) as GT0032+61 with flux 0.214 Jy at 4850 MHz. Trushkin et al. (1990) have observed the sources from the Galactic plane survey by Kallas and Reich (1980) with RATAN-600. GT0032+61 is the their KR104 with flux 0.5 Jy at 1410 MHz. Now this source is included in the VCS4 catalog (Petrov et al., 2005). We have measured the mean fluxes 0.23+-0.02, 0.21+-0.02 and 0.35+-0.04 at 4.8, 11.2, and 21.7 GHz during 20 Jan - 06 Feb 2016. The total compiled spectrum, based on data from CATS data base (http://cats.sao.ru) is well fitted by the power law: S_nu[Jy] = 13.9 nu^(-0.51)[MHz] from 74 to 10000 MHz, but our new measurements and AMIGP survey data (Perrott et al., 2015) at 16 GHz indicate that there is the high-frequency variable component in the radio spectrum. The recent measurements show the fluxes higher than the former ones by factor 1.5-2 at frequencies higher 4.8 GHz. We used the VCS4 position of the GT0032+61 for search in the WISE and 2MASS catalogs: WISEJ003525.46+613029.5 and 2MASS00352558+6130282 are within 1.6 and 3.2 arcsec from the radio source and are good counterparts for Fermi J0035+6131 also. They have the IR fluxes are higher (~1mag) that recent NIR data Carrasco et al. (Atel#8706).

Compiled radio spectrum of GT0032+61