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The potential to detect axion dark matter through astrophysical processes has shown high promise in recent years. We therefore expand on previous work studying the axion-to-photon conversion efficacy of neutron stars and the interstellar…

High Energy Astrophysical Phenomena · Physics 2026-05-15 Felix Weber , Vikram Ravi

The detection of very high-energy neutrinos by IceCube experiment supports the existence of a comparable gamma-ray counterpart from the same cosmic accelerators. Under the likely assumption that the sources of these particles are of…

We investigate the effect of axions on the polarization of electromagnetic waves as they propagate through astronomical distances. We analyze the change in the dispersion of the electromagnetic wave due to its mixing with axions. We find…

High Energy Physics - Phenomenology · Physics 2009-11-07 Pankaj Jain , Sukanta Panda , S. Sarala

Axions are expected to be produced in the sun via the Primakoff process. They may be detected through the inverse process in the laboratory, under the influence of a strong magnetic field, giving rise to X-rays of energies in the range of a…

High Energy Physics - Experiment · Physics 2009-01-06 Christos Eleftheriadis

We propose a new strategy to search for dark matter axions using tunable cryogenic plasmas. Unlike current experiments, which repair the mismatch between axion and photon masses by breaking translational invariance (cavity and dielectric…

High Energy Physics - Phenomenology · Physics 2019-10-02 Matthew Lawson , Alexander J. Millar , Matteo Pancaldi , Edoardo Vitagliano , Frank Wilczek

We calculate the total cross section for the production of photons from the scattering of axions by a strong inhomogeneous magnetic field in the form of a 2D delta-function, a cylindrical step function and a 2D Gaussian distribution, which…

High Energy Physics - Phenomenology · Physics 2014-11-20 Eduardo I. Guendelman , Idan Shilon , Giovanni Cantatore , Konstantin Zioutas

We propose a new method to search for axion-like particles (ALPs) based on the gamma-rays produced concomitant with high-energy astrophysical neutrinos. The existence of high-energy neutrinos implies production of gamma-rays in the same…

High Energy Physics - Phenomenology · Physics 2017-12-07 Hendrik Vogel , Ranjan Laha , Manuel Meyer

The soft X-ray flux produced by solar axions in the Earth's magnetic field is evaluated in the context of ESA's XMM-Newton observatory. Recent calculations of the scattering of axion-conversion X-rays suggest that the sunward magnetosphere…

High Energy Astrophysical Phenomena · Physics 2014-09-16 G. W. Fraser , A. M. Read , S. Sembay , J. A. Carter , E. Schyns

The main motivation for our work has been a puzzling observation concerning quasars. No one expected the existence of correlations in the polarisation of visible light coming from objects separated by gigaparsecs, until they were first…

Cosmology and Nongalactic Astrophysics · Physics 2013-09-02 A. Payez

Axion dark matter can resonantly convert to photons in the magnetosphere of neutron stars, possibly giving rise to radio signals observable on Earth. This method for the indirect detection of axion dark matter has recently received…

High Energy Physics - Phenomenology · Physics 2021-11-11 Alexander J. Millar , Sebastian Baum , Matthew Lawson , M. C. David Marsh

In the presence of axion dark matter, fermion spins experience an "axion wind" torque and an "axioelectric" force. We investigate new experimental probes of these effects and find that magnetized analogs of multilayer dielectric haloscopes…

High Energy Physics - Phenomenology · Physics 2024-06-11 Asher Berlin , Alexander J. Millar , Tanner Trickle , Kevin Zhou

In the presence of a background magnetic field, axions or axion-like particles (ALPs) can be resonantly converted to photons when their mass is nearly equal to the effective photon mass. In this paper, we propose a novel method to constrain…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-21 Ashu Kushwaha , Rajeev Kumar Jain

We compute the production of thermal photons in relativistic heavy-ion collisions by gluon fusion in the presence of an intense magnetic field, and during the early stages of the reaction. This photon yield is an excess over calculations…

High Energy Physics - Phenomenology · Physics 2017-04-20 Alejandro Ayala , Jorge David Castano-Yepes , C. A. Dominguez , L. A. Hernandez

Axion dark matter passing through the magnetospheres of magnetars can undergo hyper-efficient resonant mixing with low-energy photons, leading to the production of narrow spectral lines that could be detectable on Earth. Since this is a…

High Energy Physics - Phenomenology · Physics 2025-05-28 Sandip Roy , Anirudh Prabhu , Christopher Thompson , Samuel J. Witte , Carlos Blanco , Jonathan Zhang

Coupling of axions or axion-like particles (ALPs) with photons may lead to photons escaping optically opaque regions by oscillating into ALPs. This phenomenon may be viewed as the Light Shining through Wall (LSW) scenario. While this LSW…

High Energy Physics - Phenomenology · Physics 2023-11-27 Dibya S. Chattopadhyay , Basudeb Dasgupta , Amol Dighe , Mayank Narang

It has been pointed out in the literature that in the presence of an external magnetic field the axion mass receives an electromagnetic contribution. We show that if a magnetic field with energy density larger than ~10^{-8} times the energy…

Astrophysics · Physics 2009-11-13 L. Campanelli , M. Giannotti

Axion-like particles (ALPs) produced in the core of a magnetar will convert to photons in the magnetosphere, leading to possible signatures in the hard X-ray band. We perform a detailed calculation of the ALP-to-photon conversion…

High Energy Physics - Phenomenology · Physics 2019-02-15 Jean-François Fortin , Kuver Sinha

The axion decay $a \to e^+ e^-$ via a plasmon is investigated in an external magnetic field. The results we have obtained demonstrate a strong catalyzing influence of the field as the axion lifetime in the magnetic field of order $10^{15}$…

High Energy Physics - Phenomenology · Physics 2009-10-31 N. V. Mikheev , A. Ya. Parkhomenko , L. A. Vassilevskaya

Magnetic field dependent transient solar observations are suggestive for axion-photon oscillations with light axion(-like) particle involvement. Novel dark-moon measurements with the SMART X-ray detectors can be conclusive for radiatively…

The axion modified electrodynamics is usually used as a model for description of possible violation of Lorentz invariance in field theory. The low-energy manifestation of Lorentz violation can hopefully be observed in experiments with the…

High Energy Physics - Theory · Physics 2008-11-26 Yakov Itin
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