Fermi J1725.5+1312 in the error region of the neutrino IC201021A is a likely High Energy Peaked (HBL) blazar
ATel #14192; P. Giommi (IAS-TUM), P. Padovani (ESO), T. Glauch (TUM) and E. Resconi (TUM)
on 18 Nov 2020; 09:36 UT
Credential Certification: Paolo Giommi (giommipaolo@gmail.com)
Subjects: Radio, X-ray, Gamma Ray, Neutrinos, AGN, Blazar
We have built the spectral energy distribution (SED) of the X-ray source (RA= 17 23 14.1, Dec = 14 20 59.) associated with the new gamma-ray detection Fermi J1725.5+1312 in the error region of the high-energy IceCube neutrino IC201021A (GCNs nr. 28715, 28751, and 28812) combining radio data from the VLASSQL catalog (Gordon et al. 2020 RNAAS 4 10), IR data from the WISE survey (Cutri et al. 2013, wise.rept....1C), optical data from the PanSTARRS (Chambers et al. 2016 arXiv:1612.05560) and Catalina survey (Drake, A.J. et al. 2009, ApJ, 696, 870), X-ray data from the RASS (Boller et al. 2016 A&A 103 1) and XMM-slew (Saxton et al. 2008 A&A 480 611) surveys, retrieved using the VOU-Blazars tool (Chang et al. 2019), with our analysis of Swift and Fermi data using the Open Universe Swift_xrtproc tool and the Fermi tools.
The SED shows a radio-optical-X-ray component typical of HBL Blazars. Variability of a factor of a few in the optical and X-ray bands also points to a blazar nature of Fermi J1725.5+1312.
