Multiwavelength analysis of the first Radio Weak BL Lac.

EZEQUIEL MARCHESINI; VICTORIA REYNALDI; FLORENCIA VIEYRO; JULIANA SAPONARA; ILEANA ANDRUCHOW; PAULA BENAGLIA; SERGIO CELLONE; IVÁN LÓPEZ

Seúl

Conferencia; Gemini Science Meeting 2022; 2022

Gemini Observatory - KASI

The γ-ray emitting source WISE J141046.00+740511.2 was associated to a Fermi LAT detection by crossmatching with Swift/XRT data. It has shown all canonical observational characteristics of a BL Lac source, including a power-law, featureless optical spectrum. But its was only recently detected at radio frequencies, and its radio flux is quantitatively low. By using multifrequency observations at the Jansky Very Large Array, Giant Metrewave Radio Telescope, Gran Telescopio Canarias, Gemini, William Herschel Telescope and Liverpool observatories, and together with Fermi-LAT and Swift data, we have carried out two kinds of analysis. On one hand, we have studied several known parameters that account for the radio loudness/weakness characterization and their application to blazars (in general) and to our source (in particular). And, on the other hand, we built and analysed the observed spectral energy distribution (SED) of this source to try to explain its peculiar characteristics. The multiwavelength analysis indicates that WISE J141046.00+740511.2 is of the high-frequency peaked blazar (HBL) type, that emits highly polarized light and that is likely located at low redshift. In addition, the one-zone model parameters that best fit its SED are those of an extreme HBL (EHBL), which have been long predicted in theory to lack the radio emission typical of canonical γ-ray blazars