Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Horns, Dieter"'
Autor:
Bajjali, Fayez, Dornbusch, Sven, Ekmedžić, Marko, Horns, Dieter, Kasemann, Christoph, Lobanov, Andrei, Mkrtchyan, Artak, Nguyen, Le Hoang, Tluczykont, Martin, Tuccari, Gino, Ulrichs, Johannes, Wieching, Gundolf, Zensus, Anton
Publikováno v:
JCAP08(2023)077
We discuss first results from hidden photon dark matter searches made with a prototype of the Broadband Radiometric Axion/ALPs Search Setup (BRASS-p) in the range of particle mass of 49.63-74.44 $\mu$eV (frequency range of 12-18 GHz). The conceptual
Externí odkaz:
http://arxiv.org/abs/2306.05934
Publikováno v:
Phys. Rev. D 109, 123001 (2024)
A novel table-top experiment is introduced to detect photon-axion conversion: WISP Searches on a Fiber Interferometer (WISPFI). The setup consists of a Mach-Zehnder-type interferometer with a fiber placed inside an external magnetic field, where mixi
Externí odkaz:
http://arxiv.org/abs/2305.12969
Autor:
Baktash, Ali, Horns, Dieter
The detailed simulation of extended air showers (EAS) and their emission of Cherenkov and fluorescence light requires increasing computation time and storage volume with increasing energy of the primary particle. Given these limitations, it is curren
Externí odkaz:
http://arxiv.org/abs/2305.08710
The nearby GRB221009A at redshift $z=0.1505$ has been observed up to a maximum energy of 18 TeV with the LHAASO air shower array. The expected optical depth for a photon with energy $E_\gamma=18$ TeV varies between 9.4 and 27.1 according to existing
Externí odkaz:
http://arxiv.org/abs/2210.07172
Autor:
Yu, Qixin, Horns, Dieter
Publikováno v:
JCAP 05 (2023) 029
High energy gamma-rays propagating in external magnetic fields may convert into axion-like particles (ALPs). In this case, the observed gamma-ray spectra are modified by the resulting energy-dependent conversion probability. In this study, we use the
Externí odkaz:
http://arxiv.org/abs/2208.00079
Autor:
Dirson, Ludmilla, Horns, Dieter
Publikováno v:
A&A 671, A67 (2023)
The Crab Nebula emits bright non-thermal radiation from radio to the most energetic photons. The underlying physical model of a relativistic wind from the pulsar terminating in a hydrodynamic standing shock remains unchanged since the early 1970s. In
Externí odkaz:
http://arxiv.org/abs/2203.11502
The focus on dark matter search has expanded to include low-mass particles such as axions or axion-like particles, and novel theoretical schemes extending the phenomenological landscape, within QCD and beyond, also garnered additional interest in rec
Externí odkaz:
http://arxiv.org/abs/2111.04541
Autor:
Pallathadka, Gautham Adamane, Calore, Francesca, Carenza, Pierluca, Giannotti, Maurizio, Horns, Dieter, Kuhlmann, Julian, Majumdar, Jhilik, Mirizzi, Alessandro, Ringwald, Andreas, Sokolov, Anton, Stief, Franziska, Yu, Qixin
Publikováno v:
JCAP 11 (2021) 036
It has been recently claimed by two different groups that the spectral modulation observed in gamma rays from Galactic pulsars and supernova remnants can be due to conversion of photons into ultra-light axion-like-particles (ALPs) in large-scale Gala
Externí odkaz:
http://arxiv.org/abs/2008.08100
Autor:
Yeung, Paul K. H., Horns, Dieter
Publikováno v:
A&A 638, A147 (2020)
Context: The Crab pulsar and its nebula are the origin of relativistic electrons which can be observed through their synchrotron and inverse Compton emission. The transition between synchrotron-dominated and inverse-Compton-dominated emissions takes
Externí odkaz:
http://arxiv.org/abs/2004.03562
Publikováno v:
JCAP10(2019)014
The origin of non-baryonic Dark Matter remains elusive despite ongoing sensitive searches for heavy, thermally produced dark matter particles. Recently, it has been shown, that non-thermally produced vector bosons (sometimes called hidden photons) re
Externí odkaz:
http://arxiv.org/abs/1907.12449