Fermi-LAT and Multi-wavelength Monitoring of the Broad Line Radio Galaxy 3C 120

2015/03/13 by Yasuyuki Tanaka, Tanaka, Y. T., Akihiro Doi +17
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Radio Astronomy Observations and Technology

paper · pdf · doi:10.48550/arxiv.1503.04248

openalex publication_date 2015/03/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present six-year multi-wavelength monitoring result for broad-line radio galaxy 3C 120. The source was sporadically detected by Fermi-LAT and after the MeV/GeV gamma-ray detection the 43 GHz radio core brightened and a knot ejected from an unresolved core, implying that the radio-gamma phenomena are physically connected. We show that the gamma-ray emission region is located at sub-pc distance from the central black hole, and MeV/GeV gamma-ray emission mechanism is inverse-Compton scattering of synchrotron photons. We also discuss future perspective revealed by next-generation X-ray satellite Astro-H.

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