In this work, we investigate the axionlike particle (ALP)-photon oscillation effect in the
spectra of the blazar Markarian 421 (Mrk 421) using 4.5 years of the Astrophysical Radiation …

Photon–axion-like particle (ALP) oscillations result in the survival of gamma rays from distant
sources above TeV energies. Studies of events observed by CAST, Fermi-LAT, and IACT …

In this study, we explore the axion-like particle (ALP)-photon oscillation effect in the γ-ray
spectra of the blazars Markarian 421 (Mrk 421) and PG 1553+ 113, which are measured by …

It has been recently claimed by two different groups that the spectral modulation observed in
gamma rays from Galactic pulsars and supernova remnants can be due to conversion of …

In this work, we re-analyze the Fermi-LAT observation of NGC 1275 to search for axion-like
particle (ALP) effects and constrain ALP parameters. Instead of fitting the observed spectrum …

Context. The intrinsic TeV emission of some BL Lacs is characterized by a hard spectrum
(the hard-TeV spectrum) after correcting for the extragalactic background light. The hard-TeV …

Flat spectrum radio quasar (FSRQ) is the most luminous blazar at the GeV energies. In this
paper, we probe the photon-axion-like particle (ALP) oscillation effect on the latest very-high …

There are still some significant and unanswered questions about the incredible very-high-
energy γ-ray signatures. To help understand the mechanism, focusing on the linear and …

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 …

The observation of cosmic sub-PeV gamma rays from the Crab Nebula opens up the
possibility of testing cosmic ray photon transparency at the multi-hundred-TeV scale …