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An indirect measurement of the antiproton flux in cosmic rays is possible as the particles undergo deflection by the geomagnetic field. This effect can be measured by studying the deficit in the flux, or shadow, created by the Moon as it…

高能天体物理现象 · 物理学 2018-05-18 A. U. Abeysekara , A. Albert , R. Alfaro , C. Alvarez , R. Arceo , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , E. Belmont-Moreno , S. Y. BenZvi , J. Braun , C. Brisbois , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , M. Castillo , U. Cotti , J. Cotzomi , S. Coutiño de León , C. De León , E. D la Fuentem , R. Diaz Hernandez , S. Dichiara , B. L. Dingus , M. A. DuVernois , R. W. Ellsworth , K. Engels , O. Enríquez-Rivera , H. Fleischhack , N. Fraija , A. Galván-Gámez , J. A. García-González , A. González Muñoz , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , B. Hona , F. Hueyotl-Zahuantitla , C. M. Hui , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , A. Lara , W. H. Lee , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , R. Luna-García , R. López-Coto , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , H. Martínez-Huerta , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , A. Nayerhoda , L. Nellena , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , R. Pelayo , J. Pretz , E. G. Pérez-Pérez , Z. Ren , C. D. Rho , C. Riviére , D. Rosa-González , M. Rosenberg , E. Ruiz-Velasco , F. Salesa Greus , A. Sandoval , M. Schneider , H. Schoorlemmer , M. Seglar Arroyo , G. Sinnis , A. J. Smith , R. W. Springer , P. Surajbali , I. Taboada , O. Tibolla , K. Tollefson , I. Torres , L. Villaseñor , T. Weisgarber , S. Westerhoff , J. Wood , T. Yapici , G. B. Yodha , A. Zepeda , H. Zhou , J. D. Alvarez

We analysed the arrival directions of single muons detected by the first LVD tower from November, 1994 till January, 1998. The moon shadowing effect has been observed. To search for point sources of high energy photons we have analysed…

高能物理 - 实验 · 物理学 2012-08-27 LVD Collaboration

The Sun albedo of cosmic rays at GeVs energy has been discovered recently by FERMI satellite. They are traces of atmospheric CR hitting solar atmosphere and reflecting skimming gamma photons. Even if relevant for astrophysics, as being…

高能天体物理现象 · 物理学 2018-10-05 Daniele Fargion , Pietro Oliva , Pier Giorgio De Sanctis Lucentini , Maxim Yu. Khlopov

ANTARES is the largest undersea neutrino telescope and it has been taking data in its final configuration for more than ten years. On their journey to the Earth, cosmic rays can be absorbed by celestial objects, like the Sun, leading to a…

高能天体物理现象 · 物理学 2021-10-27 A. Romanov , M. Sanguineti

Calculations are presented to demonstrate the feasibility of Moon shadow observations for mean primary energies in the region 0.5-1.5 TeV using a muon detector operating under the Pyramid of the Sun at Teotihuacan, Mexico. Due to the small…

仪器与探测器 · 物理学 2009-01-12 V Grabski , A Morales , R Reche , O Orozco

Dark matter may interact with the Standard Model through the kinetic mixing of dark photons, $A'$, with Standard Model photons. Such dark matter will accumulate in the Sun and annihilate into dark photons. The dark photons may then leave…

高能物理 - 唯象学 · 物理学 2017-10-05 Jonathan L. Feng , Jordan Smolinsky , Philip Tanedo

Cosmic rays, originating from stars, supernovae, and other astrophysical sources, are composed of high-energy particles that enter Earths atmosphere. Upon interaction with atmospheric nuclei, these primary cosmic rays generate secondary…

Direct searches for dark matter with large-scale noble liquid detectors have become sensitive enough to detect the coherent scattering of local neutrinos. This will become a very challenging background to dark matter discovery in planned…

高能物理 - 唯象学 · 物理学 2023-05-10 Andrea Gaspert , Pietro Giampa , Navin McGinnis , David E. Morrissey

Milagrito, a prototype for the Milagro detector, operated for 15 months in 1997-8 and collected 8.9 billion events. It was the first extensive air shower (EAS) array sensitive to showers intiated by primaries with energy below 1 TeV. The…

Cosmic ray antiprotons provide an important probe for the study of cosmic-ray propagation in the interstellar space and to investigate the existence of Galactic dark matter. Cosmic rays are hampered by the Moon, therefore a deficit of…

高能天体物理现象 · 物理学 2009-07-08 G. Di Sciascio , R. Iuppa , S. Vernetto

The cosmic-ray Sun shadow, which is caused by high-energy charged cosmic rays being blocked and deflected by the Sun and its magnetic field, has been observed by various experiments, such as Argo-YBJ, HAWC, Tibet, and IceCube. Most notably,…

高能天体物理现象 · 物理学 2020-11-03 Julia Becker Tjus , Paolo Desiati , Niklas Döpper , Horst Fichtner , Jens Kleimann , Mike Kroll , Frederik Tenholt

The shadowing effect of the Moon and Sun in TeV cosmic rays has been measured with high statistical significance by several experiments. Unlike particles from directions close to the Moon, however, charged particles passing by the…

高能天体物理现象 · 物理学 2019-08-28 Frederik Tenholt , Julia Becker Tjus , Paolo Desiati

Cosmic rays are hampered by the Moon and a deficit in its direction is expected (the so-called Moon shadow). The Moon shadow is an important method to determine the performance of an air shower array. In fact, the westward displacement of…

高能天体物理现象 · 物理学 2019-08-14 R. Iuppa , D. Martello , B. Wang , G. Zizzi

Large-scale neutrino telescopes have the primary objective to detect and characterize neutrino sources in the universe. These experiments rely on the detection of charged leptons produced in the interaction of neutrinos with nuclei. Angular…

The observation of the Moon shadow effect with the L3+C detector is reported. The expected offset and elongation of the Moon shadow due to the geomagnetic field are clearly observed. A determination of the angular resolution and pointing…

天体物理学 · 物理学 2007-05-23 J. F. PARRIAUD

The Earth is subjected to a uniform flux of very-high-energy (VHE, E > 100 GeV) cosmic rays unless they are obscured by an object, such as the Moon, in which case a deficit or shadow is created. Since cosmic rays are charged this deficit is…

高能天体物理现象 · 物理学 2019-08-13 Ralph Bird

Dark matter trapped in the Sun produces a flux of all flavors of neutrinos, which then reach the Earth after propagating out of the Sun and oscillating from the production point to the detector. The typical signal which is looked at refers…

高能物理 - 唯象学 · 物理学 2012-01-25 Nicolao Fornengo , Viviana Niro

We present a new dataset analysis of the neutrino experiment at the Baksan Underground Scintillator Telescope with muon energy threshold about 1 GeV for the longest exposure time toward the Sun. In search for a signal from…

高能天体物理现象 · 物理学 2015-06-12 M. M. Boliev , S. V. Demidov , S. P. Mikheyev , O. V. Suvorova

We study neutrino, muon, and gamma-ray fluxes in extraterrestrial environments in our Solar System via semi-analytical estimates and Monte Carlo simulations. In sites with negligible atmosphere, we find a strong reduction in the…

高能物理 - 实验 · 物理学 2024-11-15 Xilin Zhang , Jason Detwiler , Clint Wiseman