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The European Solar Telescope (EST) is a project of a new-generation solar telescope. It has a large aperture of 4~m, which is necessary for achieving high spatial and temporal resolution. The high polarimetric sensitivity of the EST will…

天体物理仪器与方法 · 物理学 2018-11-05 Jan Jurcak , Manuel Collados , Jorrit Leenaarts , Michiel van Noort , Rolf Schlichenmaier

The Cherenkov Telescope Array (CTA), is an international project for the next generation ground- based observatory for gamma-ray astronomy in the energy range from 20 GeV to 300 TeV. The sensitivity in the core energy range will be…

天体物理仪器与方法 · 物理学 2015-09-07 Markus Garczarczyk , Stefan Schlenstedt , Louise Oakes , Ullrich Schwanke , the MST Team

We present a detailed computation of the expected rate for Geomagnetic Conversion of Solar Axions to X-rays (GECOSAX) along the orbit of an x-ray satellite. We use realistic satellite orbits and propagation in time. A realistic model for…

天体物理学 · 物理学 2009-11-13 Hooman Davoudiasl , Patrick Huber

The gaseous Micromegas detector designed for the CERN Axion search experiment CAST, operated smoothly during Phase-I, which included the 2003 and 2004 running periods. It exhibited linear response in the energy range of interest (1-10keV),…

The Large Hadron Collider (LHC) at CERN will provide proton-proton collisions at a centre-of-mass energy of 14 TeV with a design luminosity of 10**34/cm**2/s. The exploitation of the rich physics potential offered by the LHC will be…

高能物理 - 实验 · 物理学 2007-05-23 Felicitas Pauss , Michael Dittmar

The purpose of this paper is to assess the feasibility of axion detection by X-ray spectroscopy of the sun. We review the theory of axion-photon mode conversion with special attention to axions emitted in the 14.4 keV M1 decay of 57Fe at…

太阳与恒星天体物理 · 物理学 2015-06-15 J. Martin Laming

We propose a search of galactic axions with mass about 0.2 microeV using a large volume resonant cavity, about 50 m^3, cooled down to 4 K and immersed in a moderate axial magnetic field of about 0.6 T generated inside the superconducting…

仪器与探测器 · 物理学 2017-07-20 David Alesini , Danilo Babusci , Daniele Di Gioacchino , Claudio Gatti , Gianluca Lamanna , Carlo Ligi

In non-hadronic axion models, which have a tree-level axion-electron interaction, the Sun produces a strong axion flux by bremsstrahlung, Compton scattering, and axio-recombination, the "BCA processes." Based on a new calculation of this…

An experiment is described to detect dark matter axions trapped in the halo of our galaxy. Galactic axions are converted into microwave photons via the Primakoff effect in a static background field provided by a superconducting magnet. The…

Axions, if discovered, could serve as a powerful new messenger for studying astrophysical objects. In this study we show how the Sun's spatial and spectral "axion image" can be inverted to infer the radial dependence of solar properties in…

高能物理 - 唯象学 · 物理学 2023-10-09 Sebastian Hoof , Joerg Jaeckel , Lennert J. Thormaehlen

The Cherenkov Telescope Array (CTA) is the planned next-generation instrument for ground-based gamma-ray astronomy, covering a photon energy range of ~20 GeV to above 100 TeV. CTA will consist of the order of 100 telescopes of three sizes,…

天体物理仪器与方法 · 物理学 2019-08-14 G. Pühlhofer

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…

Axions, originally proposed to solve the strong CP problem of quantum chromodynamics, emerge now as leading candidates of WISP dark matter. The rich phenomenology associated to the light and stable QCD axion can be described as an effective…

Astrophysical sources of energetic gamma rays provide the right conditions for maximal mixing between (pseudo)scalar (axion-like) particles and photons if their coupling is as strong as suggested by the PVLAS claim. This is independent of…

高能物理 - 唯象学 · 物理学 2008-11-26 M. Fairbairn , S. N. Gninenko , N. V. Krasnikov , V. A. Matveev , T. I. Rashba , A. Rubbia , Sergey Troitsky

If axions or axion-like particles exist and are detected, they will not only extend the standard model of particle physics but will also open a new way to probe their sources. Axion helioscopes aim to detect axions which are produced in the…

太阳与恒星天体物理 · 物理学 2020-01-28 Joerg Jaeckel , Lennert J. Thormaehlen

The PVLAS experiment has recently claimed evidence for an axion-like particle in the milli-electron-Volt mass range with a coupling to two photons that appears to be in contradiction with the negative results of the CAST experiment…

高能物理 - 唯象学 · 物理学 2008-11-26 R. N. Mohapatra , Salah Nasri

STACEE is a proposed atmospheric Cherenkov telescope for ground-based gamma-ray astrophysics between 25 and 500 GeV. The telescope will make use of the large solar mirrors (heliostats) available at a solar research facility to achieve an…

天体物理学 · 物理学 2007-05-23 Rene A. Ong , the STACEE Collaboration

The sensitivities of large arrays of low-background germanium detectors for solar axion searches are investigated in the context of three coupling scenarios. A search was made for the 14.4-keV axion branch from the M1-transition in the…

核实验 · 物理学 2009-11-06 F. T. Avignone

The experimental search for solar hadronic axions is started at the Baksan Neutrino Observatory of the Institute for Nuclear Researches Russian Academy of Science. It is assumed that axions are created in the Sun during M1-transition…