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The observed splittings of solar oscillation frequencies can be employed to separate the effects of internal solar rotation and to estimate the contribution from a large-scale magnetic field or any latitude-dependent thermal perturbation…

Astrophysics · Physics 2007-05-23 H. M. Antia , S. M. Chitre , M. J. Thompson

The axion photon system in an external magnetic field, when for example considered with the geometry of the experiments exploring axion photon mixing, displays a continuous axion-photon duality symmetry in the limit the axion mass is…

High Energy Physics - Theory · Physics 2008-11-26 E. I. Guendelman

Recently there has been a surge of new experimental proposals to search for ultra-light axion dark matter with axion mass, $m_a\lesssim1\,\mu$eV. Many of these proposals search for small oscillating magnetic fields induced in or around a…

High Energy Physics - Phenomenology · Physics 2019-03-14 J. L. Ouellet , Z. Bogorad

The axio-electric effect in silicon atoms is sought for solar axions appearing owing to bremsstrahlung and the Compton process. Axions are detected using a Si(Li) detector placed in a low-background setup. As a result, a model-independent…

High Energy Physics - Experiment · Physics 2015-06-05 A. V. Derbin , I. S. Drachnev , A. S. Kayunov , V. N. Muratova

Axions solve the Strong CP Problem and are a cold dark matter candidate. The combined constraints from accelerator searches, stellar evolution limits and cosmology suggest that the axion mass is in the range $3 \cdot 10^{-3} > m_a >…

High Energy Physics - Phenomenology · Physics 2007-05-23 Pierre Sikivie

We show that the magnetic component of the photon field produced by dark matter axions via the two-photon coupling mechanism in a Sikivie Haloscope is an important parameter passed over in previous analysis and experiments. The interaction…

High Energy Physics - Phenomenology · Physics 2016-06-13 Ben T. McAllister , Stephen R. Parker , Michael E. Tobar

In the presence of an external magnetic field the axion and the photon mix. In particular, the dispersion relation of a longitudinal plasmon always crosses the dispersion relation of the axion (for small axion masses), thus leading to a…

High Energy Physics - Phenomenology · Physics 2020-07-01 Andrea Caputo , Alexander J. Millar , Edoardo Vitagliano

Assuming axion-like particles account for the entirety of the dark matter in the Universe, we study the possibility of detecting their decay into photons at radio frequencies. We discuss different astrophysical targets, such as dwarf…

High Energy Physics - Phenomenology · Physics 2023-07-07 A. Caputo , M. Regis , M. Taoso , S. J. Witte

Since the discovery by Hale in the early 1900s that sunspots harbor strong magnetic field, magnetism has become increasingly important in our understanding of processes on the Sun and in the Heliosphere. Many current and planned instruments…

Solar and Stellar Astrophysics · Physics 2012-07-05 A. G. de Wijn

During the last few years our knowledge about the X-ray emission from bodies within the solar system has significantly improved. Several new solar system objects are now known to shine in X-rays at energies below 2 keV. Apart from the Sun,…

We attempt to find the impact of a modified Tolman Oppenheimer Volkoff (TOV) system of equations on the luminosities of direct photons, neutrinos and axions for a particular axion mass in the presence of a magnetic field. We employ two…

High Energy Physics - Phenomenology · Physics 2024-02-21 Shubham Yadav , M. Mishra , Tapomoy Guha Sarkar

We present a novel approach to investigating axions and axion-like particles (ALPs) by studying their potential conversion into X-rays within the Sun's atmospheric magnetic field. Utilizing high-sensitivity data from the Nuclear…

Axion as one of the promising dark matter candidates can be detected through narrow radio lines emitted from the magnetic white dwarf stars. Due to the existence of the strong magnetic field, the axion may resonantly convert into the radio…

High Energy Physics - Phenomenology · Physics 2021-06-23 Jin-Wei Wang , Xiao-Jun Bi , Run-Min Yao , Peng-Fei Yin

We present a novel quantum sensing approach to search for axion-electron interactions around the axion mass of 6 \mueV. In this region, laboratory searches are relatively scarce, and our direct experiment measuring the axion-electron…

High Energy Physics - Phenomenology · Physics 2025-12-23 Hongliang Wu , Yuchen Han , Zhengtao Wang , Dezhi Zheng , Yeliang Wang , Liu Yang , Zhiwei Wang , Bo Zhang , Dmitry Budker , Jun Zhang

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

The sun blocks cosmic ray particles from outside the solar system, forming a detectable shadow in the sky map of cosmic rays detected by the ARGO-YBJ experiment in Tibet. Because the cosmic ray particles are positive charged, the magnetic…

An x-ray detector for a solar axion search was developed. The detector is operated at 60K in a cryostat of a superconducting magnet. Special care was paid to microphonic noise immunity and mechanical structure against thermal contraction.…

Astrophysics · Physics 2009-11-07 T. Namba , Y. Inoue , S. Moriyama , M. Minowa

The all-flavor solar neutrino flux measured by the Sudbury Neutrino Observatory (SNO) constrains nonstandard energy losses to less than about 10% of the Sun's photon luminosity, superseding a helioseismological argument and providing new…

Astrophysics · Physics 2010-04-30 Paolo Gondolo , Georg Raffelt

We identify a new resonance, axion magnetic resonance (AMR), that can greatly enhance the conversion rate between axions and photons. A series of axion search experiments rely on converting them into photons inside a constant magnetic field…

High Energy Physics - Phenomenology · Physics 2024-09-12 Hyeonseok Seong , Chen Sun , Seokhoon Yun