Signals of axion like dark matter in time dependent polarization of light

Chigusa, So; Moroi, Takeo; Nakayama, Kazunori

doi:10.1016/j.physletb.2020.135288

Cited by 17 publications

(10 citation statements)

References 93 publications

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“…The rotation of PA by axion dark matter is predicted to oscillate with period ∼ 1 yr. Search for this oscillation has been performed for blazars (Ivanov et al 2019), pulsars (Caputo et al 2019), and cosmic microwave background (Fedderke et al 2019), and led to similar constraints as the studies with the PPD. It was pointed out that the axion search with PPDs have a potential for achieving the best sensitivity (Chigusa et al 2020).…”

Section: Probe Of Fundamental Physicsmentioning

confidence: 99%

Polarimetric studies of GRBs, AGN jets, and axion dark matter

Toma¹

2021

Preprint

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Relativistic jets are collimated outflows with speeds close to light speed, which are associated with gamma-ray bursts (GRBs), active galactic nuclei (AGNs), and so on. This article mainly overviews recent developments of polarimetric studies of GRBs and their afterglows in the gamma-ray and optical wavebands as well as the first detections of their radio polarization. Polarimetric observations and theoretical modelings can address the emission mechanism, magnetic field structure, and energetics of GRB jets and related collisionless plasma physics. Some of the discussed key physics are common with AGN jets. Furthermore, we mention that polarimetry of AGN jets and protoplanetary disks may be a novel approach to search for ultra-light axion dark matter.

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Section: Probe Of Fundamental Physicsmentioning

confidence: 99%

Polarimetric studies of GRBs, AGN jets, and axion dark matter

Toma¹

2021

Preprint

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“…This achromaticity has the additional observational advantage of distinguishing the axion-induced rotation from frequency-dependent Faraday rotation [35]. Indeed there continue to be new lessons to learnt from this effect, [36][37][38][39], including its application to novel axion backgrounds [40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Bending of light in axion backgrounds

McDonald,

Ventura

2020

Preprint

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In this work we examine refraction of light by computing full solutions to axion electrodynamics. We also allow for the possibility of an additional plasma component. We then specialise to wavelengths which are small compared to background scales to determine if refraction can be described by geometric optics. In the absence of plasma, for small incidence angles relative to the optical axis, axion electrodynamics and geometric optics are in good agreement, with refraction occurring at O(g 2 aγγ ). However, for rays which lie far from the optical axis, the agreement with geometric optics breaks down and the dominant refraction requires a full wave-optical treatment, occurring at O(gaγγ). In the presence of sufficiently large plasma masses, the wave-like nature of light becomes suppressed and geometric optics is in good agreement with the full theory for all rays. Our results therefore suggest the necessity of a more comprehensive study of lensing and ray-tracing in axion backgrounds, including a full account of the novel O(gaγγ) wave-optical contribution to refraction.

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“…The experimental search for axions is based on their feeble coupling to Standard Model (SM) particles. The interaction with the electromagnetic field leads to a enriched phenomenology that includes spectral distortions [12][13][14][15][16][17], an axion-mediated fifth force [18][19][20], cosmological bounds [21][22][23][24], the rotation of the photon polarization angle induced by the axion field [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39], and spin-axion coupling [40]. The interactions with the gluons or with coloured quarks would also induce an electric dipole moment of the neutron which can be sensitively probed through designed experimental setups.…”

Section: Introductionmentioning

confidence: 99%

Gravitational waves and neutrino oscillations in Chern-Simons axion gravity

Lambiase¹,

Mastrototaro²,

Visinelli³

2022

Preprint

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We investigate the modifications in the neutrino flavor oscillations under the influence of a stochastic gravitational wave background (SGWB), in a scenario in which General Relativity is modified by an additional Chern-Simons (CS) term. Assuming that the dark matter halo is in the form of axions, the CS coupling modifies the pattern of the neutrino flavor oscillations at Earth up to a total suppression in some frequency range. At the same time, the SGWB in the halo could stimulate the axion decay into gravitons over a narrow frequency range, leading to a potentially detectable resonance peak in the enhanced SGWB strain. A consistent picture would require these features to potentially show up in neutrino detection from supernovae, gravitational wave detectors, and experiments aimed at the search for axions in the Milky Way halo.

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Signals of axion like dark matter in time dependent polarization of light

Cited by 17 publications

References 93 publications

Polarimetric studies of GRBs, AGN jets, and axion dark matter

Polarimetric studies of GRBs, AGN jets, and axion dark matter

Bending of light in axion backgrounds

Gravitational waves and neutrino oscillations in Chern-Simons axion gravity

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