Axion effects on gamma-ray spectral irregularities with AGN redshift uncertainty

Abstract

We investigate the photon-axionlike particle (ALP) oscillation effects on TeV gamma-ray spectral irregularities from the uncertain redshift active galactic nuclei (AGN) VER J0521+211. The gamma-ray spectra are measured by Fermi-LAT and VERITAS with the three flux states in 2013 and 2014. We set the combined constraints on the ALP parameter ($m_a,g_{a\gamma }$) space with these states and test the extragalactic background light (EBL) absorption effect on ALP constraints with the redshift limit scenarios $z_0\sim \mathcal{O}(0.1-0.3)$. The 99% $C.L.$ photon-ALP combined constraints set by VER J0521+211 are roughly at $g_{a\gamma }\gtrsim 2.0\times 10^{-11}\mathrm{Ge}{\mathrm{V}}^{-1}$ for $1.0\times 10^{-9}\mathrm{eV}\lesssim m_a\lesssim 1.0\times 10^{-7}\mathrm{eV}$. We find no clear connection between the redshift limit scenarios and the photon-ALP constraints. Both the underestimated and overestimated redshifts can affect the constraint results.

7 pages, 4 figures. Published in PRD

References in corpus (16)

• The Milky Way as a Kiloparsec-Scale Axionscope
• Recent Progress in the Physics of Axions and Axion-Like Particles
• Signatures of axion-like particles in the spectra of TeV gamma-ray sources
• New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643
• On the redshift of TeV BL Lac objects
• Limits on axion-like particles from Mrk 421 with 4.5-year period observations by ARGO-YBJ and Fermi-LAT
• Axion-like Particles Implications for High-Energy Astrophysics
• Anisotropic cosmic optical background bound for decaying dark matter in light of the LORRI anomaly
• No Indications of Axion-Like Particles From Fermi
• Searching for Axion-Like Particles with the Blazar Observations of MAGIC and Fermi-LAT
• Indirect Detection of eV Dark Matter via Infrared Spectroscopy
• Constraining axion-like particles with the diffuse gamma-ray flux measured by the Large High Altitude Air Shower Observatory
• Probing photon-ALP oscillations from the flat spectrum radio quasar 4C+21.35
• Relevance of VHE Blazar Spectra Models with Axion-Like Particles
• Multiwavelength Observations of the Blazar VER J0521+211 During an Elevated TeV Gamma-Ray State
• Primordial black holes induced stochastic axion-photon oscillations in primordial magnetic field

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