Axion-like particles implications for high-energy astrophysics

G Galanti, M Roncadelli - Universe, 2022 - mdpi.com
We offer a pedagogical introduction to axion-like particles (ALPs) as far as their relevance
for high-energy astrophysics is concerned, from a few MeV to 1000 TeV. This review is self …

Gamma-ray cosmology and tests of fundamental physics

J Biteau, M Meyer - Galaxies, 2022 - mdpi.com
The propagation of gamma-rays over cosmological distances is the subject of extensive
theoretical and observational research at GeV and TeV energies. The mean free path of …

Limits on axionlike particles from Mrk 421 with 4.5-year period observations by ARGO-YBJ and Fermi-LAT

HJ Li, JG Guo, XJ Bi, SJ Lin, PF Yin - Physical Review D, 2021 - APS
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 …

Observability of the very-high-energy emission from GRB 221009A

G Galanti, L Nava, M Roncadelli, F Tavecchio… - Physical Review Letters, 2023 - APS
The LHAASO Collaboration detected the gamma ray burst GRB 221009A at energies above
500 GeV with a tail extending up to 18 TeV, whose spectral analysis has presently been …

Axionlike particle production at beam dump experiments with distinct nuclear excitation lines

L Waites, A Thompson, A Bungau, JM Conrad, B Dutta… - Physical Review D, 2023 - APS
Searches for axionlike particles (ALPs) are motivated by the strong CP problem in particle
physics and by unexplained dark matter in astrophysics. In this paper, we discuss novel ALP …

Prospects for detecting axionlike particles at the Coherent CAPTAIN-Mills experiment

AA Aguilar-Arevalo, DSM Alves, S Biedron… - Physical Review D, 2023 - APS
We show results from the Coherent CAPTAIN Mills (CCM) 2019 engineering run which
begin to constrain regions of parameter space for axionlike particles (ALPs) produced in …

[HTML][HTML] Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC

H Abe, S Abe, J Abhir, VA Acciari, I Agudo… - Physics of the Dark …, 2024 - Elsevier
Axion-like particles (ALPs) are pseudo-Nambu–Goldstone bosons that emerge in various
theories beyond the standard model. These particles can interact with high-energy photons …

Reconciling hints on axion-like-particles from high-energy gamma rays with stellar bounds

AP Gautham, F Calore, P Carenza… - … of Cosmology and …, 2021 - iopscience.iop.org
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 …

Photon-ALP oscillations inducing modifications to photon polarization

G Galanti - Physical Review D, 2023 - APS
Axionlike particles (ALPs) are very light, neutral, spin zero bosons predicted by many
theories which try to extend and complete the standard model of elementary particles. ALPs …

Photon-ALP interaction as a measure of initial photon polarization

G Galanti - Physical Review D, 2022 - APS
Axionlike particles (ALPs) are very light, neutral, spin zero bosons predicted by superstring
theory. ALPs interact primarily with two photons, and in the presence of an external magnetic …