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相关论文: The Large Scale Cosmic-Ray Anisotropy as Observed …

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KLYPVE-EUSO (K-EUSO) is a planned orbital detector of ultra-high-energy cosmic rays (UHECRs), which is to be deployed on board the International Space Station. K-EUSO is expected to have a uniform exposure over the celestial sphere and…

高能天体物理现象 · 物理学 2019-09-25 O. Kalashev , M. Pshirkov , M. Zotov

A new water-Cherenkov radiation detector, located at the Argentine Marambio Antarctic Base (64.24S-56.62W), has been monitoring the variability of galactic cosmic ray (GCR) flux since 2019. One of the main aims is to provide experimental…

天体物理仪器与方法 · 物理学 2023-02-02 Santos Noelia , Dasso Sergio , Gulisano Adriana María , Areso Omar , Pereira Matías , Asorey Hernán , Rubinstein Lucas

Observations of cosmic ray arrival directions made with the Pierre Auger Observatory have previously provided evidence of anisotropy at the 99% CL using the correlation of ultra high energy cosmic rays (UHECRs) with objects drawn from the…

高能天体物理现象 · 物理学 2012-10-15 Pierre Auger Collaboration

Recent precision measurements of the Ultra High Energy Cosmic Rays (UHECR) arrival directions, spectrum and parameters related to the mass of the primary particle have been done by the HiRes, Pierre Auger and Telescope Array (TA)…

高能天体物理现象 · 物理学 2017-08-02 Rita C. dos Anjos , Vitor de Souza , Rogerio M. de Almeida , Edivaldo M. Santos

We developed a new method in order to detect and quantify a potential anisotropy in the ultrahigh energy cosmic ray flux. The proposed method is a new statistical tool based upon the percolation process that is used in physics to describe…

高能天体物理现象 · 物理学 2016-10-19 Guillaume Decerprit , Benjamin Rouillé d'Orfeuil , Cyril Lachaud

Cosmic rays in the energy range from about 10's GeV to several 100's TeV are observed on Earth with an energy-dependent anisotropy of order 0.01-0.1%, and a consistent topology that appears to significantly change at higher energy. The…

高能天体物理现象 · 物理学 2015-06-03 P. Desiati , A. Lazarian

The High Resolution Fly's Eye HiRes-I detector has now been in operation in monocular mode for over six years. During that time span, HiRes-I has accumulated a larger exposure to Ultra-High Energy Cosmic Rays (UHECRs) above 10^19 eV than…

天体物理学 · 物理学 2019-08-15 Benjamin T. Stokes

The IceCube Observatory has collected over 577 billion cosmic-ray induced muon events in its final configuration from May 2011 to May 2020. We used this data set to provide an unprecedented statistically accurate map of the cosmic ray…

Diffuse $\gamma$-ray emission produced by the interaction of cosmic-ray particles with matter and radiation in the Galaxy can be used to probe the distribution of cosmic rays and their sources in different regions of the Galaxy. With its…

In eight years of operation, the Fermi Large Area Telescope (LAT) has detected a large sample of cosmic-ray protons. The LAT's wide field of view and full-sky coverage make it an excellent instrument for studying anisotropy in the arrival…

高能天体物理现象 · 物理学 2019-08-14 Matthew Meehan , Justin Vandenbroucke

The reported detection of the global 21-cm signal by the EDGES collaboration is significantly stronger than standard astrophysical predictions. One possible explanation is an early radio excess above the cosmic microwave background. Such a…

宇宙学与河外天体物理 · 物理学 2023-01-12 Sudipta Sikder , Rennan Barkana , Anastasia Fialkov , Itamar Reis

We present the results of an analysis of the large angular scale distribution of the arrival directions of cosmic rays with energy above 4 EeV detected at the Pierre Auger Observatory including for the first time events with zenith angle…

高能天体物理现象 · 物理学 2015-11-30 The Pierre Auger Collaboration

The Atacama Cosmology Telescope was designed to measure small-scale anisotropies in the Cosmic Microwave Background and detect galaxy clusters through the Sunyaev-Zel'dovich effect. The instrument is located on Cerro Toco in the Atacama…

We report on a measurement of the angular power spectrum of the anisotropy in the Cosmic Microwave Background. The anisotropy is measured in 23 different multipole bands from l=54 (~3 deg) to l=404 (~0.45 deg) and in 6 frequency bands from…

天体物理学 · 物理学 2009-10-28 C. B. Netterfield , M. J. Devlin , N. Jarosik , L. Page , E. J. Wollack

The standard cosmological model involves the assumption of isotropy and homogeneity, a principle that is generally well-motivated but is now in conflict with various anisotropies found using independent astrophysical probes. These…

广义相对论与量子宇宙学 · 物理学 2024-06-25 Bryce Cousins , Arnab Dhani , Bangalore S. Sathyaprakash , Nicolás Yunes

We reanalyse the prospects for upcoming Ultra-High Energy Cosmic Ray experiments in connection with the phenomenology of Super-heavy Dark Matter. We identify a set of observables well suited to reveal a possible anisotropy in the High…

高能天体物理现象 · 物理学 2019-01-30 Luca Marzola , Federico R Urban

We analyze the distribution of arrival directions of ultra-high energy cosmic rays recorded at the Pierre Auger Observatory in 10 years of operation. The data set, about three times larger than that used in earlier studies, includes arrival…

高能天体物理现象 · 物理学 2015-12-01 Pierre Auger Collaboration

Both the acceleration of cosmic rays (CR) in supernova remnant shocks and their subsequent propagation through the random magnetic field of the Galaxy deem to result in an almost isotropic CR spectrum. Yet the MILAGRO TeV observatory…

星系天体物理 · 物理学 2010-09-03 M. A. Malkov , P. H. Diamond , L. 'O. C. Drury , R. Z. Sagdeev

The Large Area Telescope on board the \textit{Fermi} satellite (\textit{Fermi}-LAT) detected more than 1.6 million cosmic-ray electrons/positrons with energies above 60 GeV during its first year of operation. The arrival directions of these…

高能天体物理现象 · 物理学 2012-08-27 The Fermi LAT Collaboration