2023/12/09 by Haijun Li, Li, Hai-Jun, Wei Chao +2
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2312.05555
openalex publication_date 2023/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We present the limits on photon to axionlike particle (ALP) coupling from the 10-year period observations of the TeV BL Lacertae blazar 1ES 1215+303 (with redshift z=0.130). The contemporaneous gamma-ray spectra are measured by the collaborations Fermi-LAT and VERITAS with five flux phases from 2008 to 2017, including four low states and one flare. Using these flux phases, we show the spectral energy distributions (SEDs) under the null/ALP hypotheses and set the combined limit on ALP. The 95% \rm C.L. combined limit set by 1ES 1215+303 with the 10-year gamma-ray data is roughly at the photon-ALP coupling constant gaγ \gtrsim 1.5× 10-11 \rm GeV-1 for the ALP mass 5.0×10-10 \rm eV \lesssim ma \lesssim 1.0×10-7 \rm eV.