141. Measurement of the energy spectrum of ultra-high energy cosmic rays using the Pierre Auger ObservatoryLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Valerio Verzi, 2019, objavljeni znanstveni prispevek na konferenci Najdeno v: ključnih besedah
Ključne besede: Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR), UHECR energy spectrum
Objavljeno: 21.12.2020; Ogledov: 142; Prenosov: 6
 Polno besedilo (2,33 MB) |
142. Estimating the Depth of Shower Maximum using the Surface Detectors of the Pierre Auger ObservatoryLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Carlos José Todero Peixoto, 2019, objavljeni znanstveni prispevek na konferenci Najdeno v: ključnih besedah
Povzetek najdenega: ...Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR),
extensive air showers, Auger Surface Detector...
Ključne besede: Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR), extensive air showers, Auger Surface Detector (SD) array, depth
of shower maximum
Objavljeno: 21.12.2020; Ogledov: 139; Prenosov: 6
Polno besedilo (850,78 KB) |
143. Analysis of Data from Surface Detector Stations of the AugerPrime UpgradeLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Álvaro Taboada, 2019, objavljeni znanstveni prispevek na konferenci Najdeno v: ključnih besedah
Povzetek najdenega: ...Pierre Auger Observatory (PAO), ultra-high energy cosmic rays,
AugerPrime upgrade of the PAO, Scintillator Surface...
Ključne besede: Pierre Auger Observatory (PAO), ultra-high energy cosmic rays, AugerPrime upgrade of the PAO, Scintillator Surface Detector (SSD), Water-Cherenkov Detectors (WCDs), AugerPrime data analysis
Objavljeno: 21.12.2020; Ogledov: 148; Prenosov: 6
Polno besedilo (2,56 MB) |
144. Search for Correlations of High-energy Neutrinos and Ultra-high Energy Cosmic RaysLukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Jon Paul Lundquist, Gašper Kukec Mezek, Andrej Filipčič, A.M. Barbano, 2019, objavljeni znanstveni prispevek na konferenci Najdeno v: ključnih besedah
Ključne besede: ultra-high energy cosmic rays (UHECR), high-energy neutrinos, arrival directions, correlation search, IceCube neutrino
observatory, Pierre Auger Observatory, Telescope Array, ANTARES neutrino observatory
Objavljeno: 22.12.2020; Ogledov: 154; Prenosov: 6
Polno besedilo (400,93 KB) |
145. |
146. CALET’s sensitivity to Dark Matter annihilation in the galactic haloSaptashwa Bhattacharyya, Shoji Torii, Yoichi Asaoka, Holger Motzka, 2015, izvirni znanstveni članek Najdeno v: ključnih besedah
Povzetek najdenega: ...dark matter detectors, dark matter simulations, cosmic rays detectors...
Ključne besede: dark matter detectors, dark matter simulations, cosmic rays detectors
Objavljeno: 06.01.2021; Ogledov: 124; Prenosov: 0
Polno besedilo (3,44 MB) |
147. |
148. |
149. Measurement of the proton-air cross section with Telescope Array's Black Rock Mesa and Long Ridge fluorescence detectors, and surface array in hybrid modeMitsuhiro Abe, R. U. Abbasi, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, J. P. Lundquist, S. A. Blake, D. R. Bergman, 2020, izvirni znanstveni članek Opis: Ultra high energy cosmic rays provide the highest known energy source in the universe to measure proton cross sections. Though conditions for collecting such data are less controlled than an
accelerator environment, current generation cosmic ray observatories have large enough exposures to collect significant statistics for a reliable measurement for energies above what can be attained in the lab. Cosmic ray measurements of cross section use atmospheric calorimetry to measure depth of air shower maximum (Xmax), which is related to the primary particle’s energy and mass. The tail of the Xmax distribution is assumed to be dominated by showers generated by protons, allowing measurement of the inelastic proton-air cross section. In this work the proton-air inelastic
cross section measurement, σ_inel_p−air, using data observed by Telescope Array’s Black Rock Mesa and Long Ridge fluorescence detectors and surface detector array in hybrid mode is presented. σ_inel_p−air is observed to be 520.1 ± 35.8 [Stat.] +25.0 −40 [Sys.] mb at √s = 73 TeV. The total proton-proton cross section is subsequently inferred from Glauber formalism and is found to be σ_tot_pp = 139.4 +23.4−21.3[Stat.] +15.0−24.0[Sys.] mb.
Najdeno v: ključnih besedah
Povzetek najdenega: ...Ultra high energy cosmic rays provide the highest known energy source...
Ključne besede: cosmic rays, astroparticles, proton-air cross section
Objavljeno: 04.02.2021; Ogledov: 103; Prenosov: 0
Polno besedilo (1,99 MB) |
150. Evidence for a supergalactic structure of magnetic deflection multiplets of ultra-high-energy cosmic raysR. U. Abbasi, T. Abu-Zayyad, Mitsuhiro Abe, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist, 2020, izvirni znanstveni članek Opis: Evidence for a large-scale supergalactic cosmic-ray multiplet (arrival directions correlated with energy) structure is reported for ultra-high-energy cosmic-ray (UHECR) energies above 1019 eV using 7 years of data from the Telescope Array (TA) surface detector and updated to 10 years. Previous energy–position correlation studies have made assumptions regarding magnetic field shapes and strength, and UHECR composition. Here the assumption tested is that, because the supergalactic plane is a fit to the average matter density of the local large-scale structure, UHECR sources and intervening extragalactic magnetic fields are correlated with this plane. This supergalactic deflection hypothesis is tested by the entire field-of-view (FOV) behavior of the strength of intermediate-scale energy–angle correlations. These multiplets are measured in spherical cap section bins (wedges) of the FOV to account for coherent and random magnetic fields. The structure found is consistent with supergalactic deflection, the previously published energy spectrum anisotropy results of the TA (the Hotspot and Coldspot), and toy-model simulations of a supergalactic magnetic sheet. The seven year data posttrial significance of this supergalactic structure of multiplets appearing by chance, on an isotropic sky, is found by Monte Carlo simulation to be 4.2σ. The 10 years of data posttrial significance is 4.1σ. Furthermore, the starburst galaxy M82 is shown to be a possible source of the TA Hotspot, and an estimate of the supergalactic magnetic field using UHECR measurements is presented.
Najdeno v: ključnih besedah
Ključne besede: extragalactic magnetic fields, ultra-high-energy cosmic radiation, cosmic rays, high energy astrophysics, astrophysical magnetism, cosmic ray astronomy, cosmic ray sources
Objavljeno: 05.02.2021; Ogledov: 111; Prenosov: 4
 Polno besedilo (0,00 KB)
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