Search for Gamma-ray emission from Abell 119 galaxy cluster using INTEGRAL/ISGRI, COMPTEL, and DAMPE data

We present a comprehensive search for non-thermal high-energy \(\gamma\)-ray emission from the nearby merging galaxy cluster Abell~119 (\(z=0.044\)) using archival observations spanning over seven decades in photon energy. Our analysis combines hard X-ray data from INTEGRAL/ISGRI (30–100~keV), MeV \(\gamma\)-ray observations from COMPTEL (0.75–30~MeV), and GeV–TeV data from the DArk Matter Particle Explorer (DAMPE; 3_GeV–1TeV). No statistically significant emission is detected at the cluster position in any energy band. In the hard X-ray regime, we derive a \(3\sigma\) upper limit of \(F_{30-100\,\mathrm{keV}} \lesssim 8.5 \times 10^{-11}\)_ergcm\({\mathstrut}^{-2}\)~s\({\mathstrut}^{-1}\) from ISGRI mosaic imaging. Reanalysis of archival COMPTEL data yields 95% confidence-level upper limits ranging from \(\sim 9 \times 10^{-11}\) to \(\sim 8 \times 10^{-10}\)_ergcm\({\mathstrut}^{-2}\)~s\({\mathstrut}^{-1}\) across 0.75–30~MeV. In the GeV–TeV range, DAMPE places upper limits on the differential energy flux to \(\sim 10^{-12}\)–\(10^{-10}\)_ergcm\({\mathstrut}^{-2}\)~s\({\mathstrut}^{-1}\) (95% confidence level). These results provide independent multi-band constraints on the reported GeV excess from recent Fermi-LAT studies. While our DAMPE limits do not exclude the flux levels claimed in those analyses, the absence of confirmation across keV–MeV–GeV bands indicates that any non-thermal emission from Abell~119 remains tentative.