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Related papers: Quasar polarization with two axionlike particles

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We give an overview of collider searches for Axion-like particles (ALPs). The intention of this review is to give a pedagogical introduction to collider phenomenology of ALPs, and provide a starting point for newcomers, including suitable…

High Energy Physics - Phenomenology · Physics 2025-08-28 Anke Biekötter , Ken Mimasu

Interaction of axisymmetrically-polarized (radially or azimuthally-polarized), relativistically intense laser pulses (ALP) with under-dense plasma is shown experimentally to be different from the interaction of conventional Gaussian pulses.…

X-ray observations of bright AGNs in or behind galaxy clusters offer unique capabilities to constrain axion-like particles (ALPs). Existing analysis technique rely on measurements of the global goodness-of-fit. We develop a new analysis…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-30 Joseph P. Conlon , Markus Rummel

Axion-like particles (ALPs) can couple to photons in strong magnetic fields, producing characteristic fluctuations in X-ray spectra. Using data from NASA's Neutron Star Interior Composition Explorer (NICER), we analyzed three pulsars: PSR…

High Energy Astrophysical Phenomena · Physics 2026-02-10 Yen-Jhen Liu , Yi Yang

Axion-like particles (ALPs), relatively light (pseudo-)scalars coupled to two gauge bosons, are a common feature of many extensions of the Standard Model. Up to now there has been a gap in the sensitivity to such particles in the MeV to 10…

High Energy Physics - Phenomenology · Physics 2015-12-23 Joerg Jaeckel , Michael Spannowsky

We consider the polarization behaviour of radio waves propagating through an ultrarelativistic highly magnetized electron-positron plasma in a pulsar magnetosphere. The rotation of magnetosphere gives rise to the wave mode coupling in the…

Astrophysics · Physics 2009-10-31 Y. E. Lyubarskii , S. A. Petrova

We consider the largest observed sample including all intermediate-frequency peaked (IBL) and high-frequency peaked (HBL) flaring blazars above 100 GeV up to redshift $z = 0.6$. We show that the best-fit regression line of the emitted…

High Energy Astrophysical Phenomena · Physics 2020-04-22 Giorgio Galanti , Marco Roncadelli , Alessandro De Angelis , Giovanni F. Bignami

Mathematical ambiguities in partial-wave analysis present a significant challenge to the extraction of resonance properties in hadronic reactions. Recent work has shown that while linear photon polarization can resolve continuous…

High Energy Physics - Phenomenology · Physics 2025-09-24 Derek I. Glazier , Vincent Mathieu

Axion-like particles (ALPs) are light pseudo-scalar particles predicted in many theoretically well-motivated extensions to the standard model of particle physics (SM). The search for cold dark matter (CDM) ALPs has gained tremendous ground…

High Energy Physics - Phenomenology · Physics 2020-07-29 Ahmed Ayad , Geoff Beck

Axion-like particles (ALPs) are well-motivated extensions of the Standard Model (SM) that appear in many new physics scenarios, with masses spanning a broad range. In this work, we systematically study the production and detection prospects…

High Energy Physics - Phenomenology · Physics 2025-10-22 Shou-shan Bao , Yang Ma , Yongcheng Wu , Keping Xie , Hong Zhang

We have measured the optical linear polarization of quasars belonging to Gpc-scale quasar groups at redshift z ~ 1.3. Out of 93 quasars observed, 19 are significantly polarized. We found that quasar polarization vectors are either parallel…

Astrophysics of Galaxies · Physics 2014-11-19 Damien Hutsemékers , Lorraine Braibant , Vincent Pelgrims , Dominique Sluse

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

Axion-like particles (ALPs), a class of pseudoscalars common to many extensions of the Standard Model, have the capacity to drain energy from the interiors of stars. Consequently, stellar evolution can be used to derive many constraints on…

High Energy Physics - Phenomenology · Physics 2021-09-16 Matthew J. Dolan , Frederick J. Hiskens , Raymond R. Volkas

The growing interest in axion-like particles (ALPs) stems from the fact that they provide successful theoretical explanations of physics phenomena, from the anomaly of the CP-symmetry conservation in strong interactions to the observation…

High Energy Astrophysical Phenomena · Physics 2021-06-08 Ivana Batković , Alessandro De Angelis , Michele Doro , Marina Manganaro

Scattering of anisotropic radiation by atoms, ions or molecules is sufficient to generate linear polarization observable in stars and planets atmospheres, circumstellar environments, and in particular in the Sun's atmosphere. This kind of…

Solar and Stellar Astrophysics · Physics 2021-06-02 Saleh Qutub , Moncef Derouich , Badruddin Zaheer Ahmad

Axion-like particles are hypothetical new light (sub-eV) bosons predicted in some extensions of the Standard Model of particle physics. In astrophysical environments comprising high-energy gamma rays and turbulent magnetic fields, the…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Pierre Brun , Denis Wouters

The extragalactic background light is comprised of the cumulative radiation from all galaxies across the history of the universe. The angular power spectrum of the anisotropies of such a background at near-infrared (IR) frequencies lacks of…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-20 Andrea Caputo , Andrea Vittino , Nicolao Fornengo , Marco Regis , Marco Taoso

Certain models involving ALPs (axion-like-particles) allow for the coupling of scalars and pseudoscalars to fermions. A derivation of the total rate for production of massive scalars and pseudoscalars by an electron in a monochromatic,…

High Energy Physics - Phenomenology · Physics 2018-06-21 B. King

Axions and axion like particles in general are consequences of the extensions of the standard model in particle physics. Axions have been proposed as hypothetical pseudo-scalar particles in particle physics to solve the strong Charge-Parity…

High Energy Physics - Phenomenology · Physics 2019-05-15 K K Singh

Most of the matter in the Universe is in the form of dark matter, which has evaded detection so far. Ultralight axionlike particles (ALPs) are a class of dark matter candidates that produce measurable signatures in the form of oscillating…

Atomic Physics · Physics 2026-03-27 Mingyu Fan , Bassam Nima , Aleksandar Radak , Gonzalo Alonso-Álvarez , Amar Vutha
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