Is TOL 1326-379 a Prototype of gamma-ray Emitting FR0 Radio Galaxy?
Fu Wen-Jing, Zhang Hai-Ming, Zhang Jin, Liang Yun-Feng, Yao Su, Liang, En-Wei

TL;DR
This study investigates whether TOL 1326-379 is a gamma-ray emitting FR0 radio galaxy by analyzing Fermi/LAT data, spectral energy distribution, and positional associations, suggesting a tentative link with gamma-ray emission.
Contribution
It provides the first analysis of TOL 1326-379 as a potential gamma-ray emitting FR0 radio galaxy using Fermi/LAT data and SED modeling, highlighting its ambiguous association and spectral characteristics.
Findings
Tentative gamma-ray detection with TS=28.7.
Spatial separation suggests ambiguous association.
SED fits consistent with gamma-ray emitting RGs.
Abstract
With the possible spacial association to the Fermi/LAT source 3FGL J1330.0-3818, TOL 1326-379 may be the first one that is identified as a gamma-ray emitting Fanaroff-Riley type 0 radio galaxy (FR0 RG). We analyze the ~12 yr Fermi/LAT observation data of this gamma-ray source and examine its association to TOL 1326-379. We show that the gamma-ray source (named as J1331.0-3818) is tentatively detected with a TS value of 28.7, 3FGL J1330.0-3818 is out of the 95% containment of J1331.0-3818, and their positions are spatially separated ~0.2 degr. 4FGL J1331.3-3818 falls into the 68% containment of J1331.0-3818, suggesting that our result agrees with that reported in the Fourth Fermi LAT Source Catalog. TOL 1326-379 is out of the 95% containment of J1331.0-3818, and their positions are spatially separated ~0.4 degr, indicating that the association between J1331.0-3818 and TOL 1326-379 is…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Gamma-ray bursts and supernovae · Galaxies: Formation, Evolution, Phenomena
