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Axion-Like Particles (ALPs) are predicted by many extensions of the Standard Model and give rise to characteristic dimming and polarization effects in a light beam travelling in a magnetic field. In this Letter, we demonstrate that…

Astrophysics · Physics 2008-11-26 Alessandro De Angelis , Oriana Mansutti , Marco Roncadelli

Axion like particles (ALPs) are fundamental pseudo scalar particles with properties similar to Axions which are a well-known extension of the standard model to solve the strong CP problem in Quantum Chromodynamics. ALPs can oscillate into…

High Energy Astrophysical Phenomena · Physics 2017-10-30 Jhilik Majumdar , Francesca Calore , Dieter Horns

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

Ultra-light bosons such as axions or axion-like particles (ALPs), are promising candidates to solve the dark matter problem. A unique way to detect such ALPs is to search for the periodic oscillation feature of the position angles of…

High Energy Astrophysical Phenomena · Physics 2023-02-22 Guan-Wen Yuan , Ziqing Xia , Chengfeng Tang , Yaqi Zhao , Yi-Fu Cai , Yifan Chen , Jing Shu , Qiang Yuan

The axion, as a leading dark matter candidate, is the target of many ongoing and proposed experimental searches based on its coupling to photons. Ultralight axions that couple to photons can also cause polarization rotation of light, which…

High Energy Physics - Phenomenology · Physics 2024-10-08 Xucheng Gan , Lian-Tao Wang , Huangyu Xiao

The gravitational field of a clump of ultralight axion like particles (ALPs) in its core with a rotating binary system of dwarf stars is computed. It is established that the induced quadrupole mass moment of the clump is controlled…

High Energy Physics - Phenomenology · Physics 2024-08-26 András Patkós

Dark matter may consist of axion-like particles (ALPs). When polarized electromagnetic radiation passes through the dark-matter media, interaction with background ALPs affects the polarization of photons. The condensate of axionic dark…

High Energy Physics - Phenomenology · Physics 2025-05-02 D. Davydov , Alexander Libanov

Axion Like Particles (ALPs) are one promising kind of dark matter candidate particles that are predicted to couple with photons in the presence of magnetic fields. The oscillations between photons and ALPs travelling in the magnetic fields…

High Energy Astrophysical Phenomena · Physics 2019-11-06 Jia Bu , Ya-Ping Li

We present numerical calculations of the photon-light-pseudoscalar-boson conversion in the recently discovered binary pulsar system J0737-3039. Light pseudoscalar bosons (LPBs) oscillate into photons in the presence of strong magnetic…

Astrophysics · Physics 2009-11-13 Arnaud Dupays , Carlo Rizzo , Marco Roncadelli , Giovanni F. Bignami

The axion photon system in an external magnetic field, when the direction of propagation of axions and photons is orthogonal to the direction of the external magnetic field, displays a continuous axion-photon duality symmetry in the limit…

High Energy Physics - Theory · Physics 2010-10-27 E. I. Guendelman

Axion-like particles (ALPs) are hypothetical entities often invoked to solve various problems in particle physics to cosmology. They are one of the most promising candidates to explain the elusive dark matter. A way to search for ALPs is…

High Energy Physics - Phenomenology · Physics 2023-08-29 Rafael Alves Batista , Cristina Viviente , Gaetano Di Marco , Miguel A. Sánchez-Conde

One of the promising new proposals to search for axions in astrophysical environments is to look for narrow radio lines produced from the resonant conversion of axion dark matter falling through the magnetospheres of neutron stars. For…

High Energy Physics - Phenomenology · Physics 2024-01-05 Jonas Tjemsland , Jamie McDonald , Samuel J. Witte

The effects of an external time-dependent magnetic field in the conversion probability of photon-to-axion-like particles are studied. Our findings show that for a certain time regime, the amplitude of the produced axion-like field can be…

High Energy Physics - Phenomenology · Physics 2016-12-21 Paola Arias , Ariel Arza and , Jorge Gamboa

An intriguing possibility to partially circumvent extragalactic background light (EBL) absorption in very-high-energy (VHE) observations of blazars is that photons convert into axion-like particles (ALPs) $\gamma \to a$ inside or close to a…

High Energy Astrophysical Phenomena · Physics 2014-09-11 F. Tavecchio , G. Galanti , M. Roncadelli

Axion-like particles (ALPs) may undergo mixing with photons in the presence of astrophysical magnetic fields, leading to alterations in the observed high energy $\gamma$-ray spectra. In this study, we investigate the ALP-photon oscillation…

High Energy Astrophysical Phenomena · Physics 2024-03-06 Lin-Qing Gao , Xiao-Jun Bi , Jun-Guang Guo , Wenbin Lin , Peng-Fei Yin

Axion-like particles (ALPs) are hypothetical particles that serve as promising candidates for cold dark matter. Portals like inelastic axion scattering and axion propagated force have been employed to search for the upper limit of the ALPs'…

High Energy Physics - Phenomenology · Physics 2025-07-24 Dongyi Yang , Chenxi Sun , Jianwei Zhang

The polarization of photons emitted by astrophysical sources might be altered as they travel through a dark matter medium composed of ultra light axion-like particles (ALPs). In particular, the coherent oscillations of the ALP background in…

We study ALP-photon-conversion within strong inhomogeneous electromagnetic fields as provided by contemporary high-intensity laser systems. We observe that probe photons traversing the focal spot of a superposition of Gaussian beams of a…

High Energy Physics - Phenomenology · Physics 2014-11-21 Babette Döbrich , Holger Gies

Axion-like particles (ALPs) are a common prediction of certain theories beyond the Standard Model and couple to photons in the presence of external magnetic fields. As a consequence, photon-ALP conversions could lead to an enhancement of…

High Energy Astrophysical Phenomena · Physics 2014-12-09 Manuel Meyer