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Axion Like Particles (ALPs) are predicted to couple with photons in the presence of magnetic fields. This effect may lead to a significant change in the observed spectra of gamma-ray sources such as AGNs. Here we carry out a detailed study…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-31 M. A. Sanchez-Conde , D. Paneque , E. Bloom , F. Prada , A. Dominguez

Many extensions of the Standard Model include axions or axion-like particles (ALPs). Here we study ALP to photon conversion in the magnetic field of the Milky Way and starburst galaxies. By modelling the effects of the coherent and random…

High Energy Physics - Phenomenology · Physics 2016-01-26 Francesca V. Day

In this work, I study the mixing of photons with pseudoscalar particles and vice-versa in the presence of an external magnetic field and a pseudoscalar field. I solve exactly for the first time in the literature the equations of motion of…

High Energy Physics - Theory · Physics 2021-05-11 Damian Ejlli

The purpose of this paper is to assess the feasibility of axion detection by X-ray spectroscopy of the sun. We review the theory of axion-photon mode conversion with special attention to axions emitted in the 14.4 keV M1 decay of 57Fe at…

Solar and Stellar Astrophysics · Physics 2015-06-15 J. Martin Laming

Axionlike particles (ALPs) could mix with photons in the presence of astrophysical magnetic fields. Searching for this effect in gamma-ray observations of blazars has provided some of the strongest constraints on ALP parameter space so far.…

High Energy Astrophysical Phenomena · Physics 2022-02-02 James Davies , Manuel Meyer , Garret Cotter

We study interacting classical magnetic and pseudoscalar fields in frames of the axion electrodynamics. A large scale pseudoscalar field can be the coherent superposition of axions or axion like particles. We consider the evolution of these…

High Energy Physics - Phenomenology · Physics 2024-01-09 Maxim Dvornikov

We compute the probability of photon-axion oscillations in the presence of both intergalactic magnetic fields and an electron plasma and investigate the effect on Type Ia supernovae observations. The conversion probability is calculated…

Astrophysics · Physics 2009-11-07 Edvard Mortsell , Lars Bergstrom , Ariel Goobar

It has been shown that the shape of the luminosity function of white dwarfs (WDLF) is a powerful tool to check for the possible existence of DFSZ-axions, a proposed but not yet detected type of weakly interacting particles. With the aim of…

High Energy Physics - Phenomenology · Physics 2015-06-22 Marcelo M. Miller Bertolami , Brenda E. Melendez , Leandro G. Althaus , Jordi Isern

We investigate axion-photon conversion in stochastic magnetic fields, focusing on the evolution of the photon intensity and polarizations induced by conversion into axions. Assuming Gaussian magnetic fields characterized by the power…

High Energy Physics - Phenomenology · Physics 2025-12-25 Wataru Chiba , Ryusuke Jinno , Kimihiro Nomura

Thermally emitting neutron stars represent a promising environment for probing the properties of axion-like particles. Due to the strong magnetic fields of these sources, surface photons may partially convert into such particles in the…

High Energy Astrophysical Phenomena · Physics 2021-09-10 Aleksei Zhuravlev , Sergei Popov , Maxim Pshirkov

Axions generated thermally in the solar core can convert nearly directly to X-rays as they pass through the solar atmosphere via interaction with the magnetic field. The result of this conversion process would be a diffuse…

Solar and Stellar Astrophysics · Physics 2012-01-24 Hugh S. Hudson , L. W. Acton , E. DeLuca , I. G. Hannah , K. Reardon , K. Van Bibber

We propose a laser-plasma wakefield interaction based scheme for in situ axion generation and detection through the Primakoff process. Strong electromagnetic fields ($\gtrsim 10^{11}$\,V/m) in the wakefield can enhance axion production…

Plasma Physics · Physics 2025-12-23 Xiangyan An , Min Chen , Jianglai Liu , Zhan Bai , Liangliang Ji , Zhengming Sheng , Jie Zhang

Photon-to-axion conversions in the static electromagnetic fields are reconsidered in detail by using the Feynman diagram techniques. The differential cross sections are presented for the conversions in the presence of the electric field of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Hoang Ngoc Long , Dang Van Soa , Tuan A. Tran

It is well known that current spectroscopic determinations of the chemical composition of the Sun are starkly at odds with the metallicity implied by helioseismology. We investigate whether the discrepancy may be due to conversion of…

Solar and Stellar Astrophysics · Physics 2013-06-20 Aaron C. Vincent , Pat Scott , Regner Trampedach

Axions are hypothetical particles related to the violation of the charge-parity symmetry, being the most prone candidates for dark matter. Multiple attempts to prove their existence are currently performed in different physical systems.…

High Energy Physics - Phenomenology · Physics 2018-05-09 H. Terças , J. D. Rodrigues , J. T. Mendonça

We study the evolution of photon polarization during the photon-axion conversion process with focusing on the magnetic field configuration dependence. Most previous studies have been carried out in a conventional model where a network of…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-30 Emi Masaki , Arata Aoki , Jiro Soda

Wave propagation in periodically time-dependent media can exhibit driven mode conversion that is absent in static or adiabatic descriptions. We show that photon propagation through a coherent axion dark matter background provides a natural…

High Energy Physics - Phenomenology · Physics 2026-01-23 Run-Min Yao , Xiao-Jun Bi , Peng-Fei Yin , Qing-Guo Huang

The hypothetical axion and axion-like particles, feebly coupled with photon, have not yet been found in any experiment. With the improvement of laser technique, much stronger but shorter quasi-static electric and magnetic fields can be…

High Energy Physics - Phenomenology · Physics 2022-09-07 Shan Huang , Baifei Shen , Zhigang Bu , Xiaomei Zhang , Liangliang Ji , Shuhua Zhai

We study the axion-photon conversion process in pulsar binary systems with high Shapiro time delay. In these binary systems, the orbital plane is nearly parallel to the line of sight. When the companion star is positioned between the pulsar…

High Energy Astrophysical Phenomena · Physics 2026-05-29 Zhao-Yang Wang , Hao-Chen Tian , Yun-Feng Liang

White dwarf (WD) stars may radiate keV-energy axions produced in their stellar cores. This has been extensively studied as an extra channel by which WDs may cool, with some analyses even suggesting that axions can help explain the observed…

High Energy Physics - Phenomenology · Physics 2021-03-03 Christopher Dessert , Andrew J. Long , Benjamin R. Safdi