Results 1 to 10 of about 2,282,970 (386)
Statistical physics for cosmic structures [PDF]
The recent observations of galaxy and dark matter clumpy distributions have provided new elements to the understating of the problem of cosmological structure formation.
Labini, Francesco Sylos+1 more
core +17 more sources
Testing Fundamental Physics with High-Energy Cosmic Rays [PDF]
Cosmic rays may provide opportunities for probing fundamental physics. For example, ultra-high-energy cosmic rays might originate from the decays of metastable heavy particles, and astrophysical gamma rays can be used to test models of quantum gravity ...
Ellis, John
core +5 more sources
Cosmic-ray physics with IceCube [PDF]
IceCube as a three-dimensional air-shower array covers an energy range of the cosmic-ray spectrum from below 1 PeV to approximately 1 EeV. This talk is a brief review of the function and goals of IceTop, the surface component of the IceCube neutrino ...
Ahn+13 more
core +5 more sources
TAIGA - a hybrid array for high energy gamma astronomy and cosmic ray physics
The physics motivations and advantages of the new TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) detector are presented.
Budnev N.+78 more
doaj +2 more sources
Is cosmic speed-up due to new gravitational physics? [PDF]
We show that cosmic acceleration can arise due to very tiny corrections to the usual gravitational action of general relativity, of the form ${R}^{\ensuremath{-}n}$ with $ng0.$ This model eliminates the need for a nonzero cosmological constant or any ...
Sean M. Carroll+3 more
openalex +3 more sources
Bruno Rossi and Cosmic Rays: From Earth laboratories to Physics in Space [PDF]
Rossi's career paralleled the evolution of cosmic-ray physics. Starting from the early 1930s his pioneering work on the nature and behavior of cosmic rays led to fundamental contributions in the field of experimental cosmic-ray physics and laid the ...
Bonolis, Luisa
core +3 more sources
Simulating cosmic ray physics on a moving mesh [PDF]
We discuss new methods to integrate the cosmic ray (CR) evolution equations coupled to magneto-hydrodynamics (MHD) on an unstructured moving mesh, as realised in the massively parallel AREPO code for cosmological simulations.
Christoph Pfrommer+4 more
openalex +3 more sources
New physics from the polarized light of the cosmic microwave background [PDF]
The current cosmological model requires new physics beyond the standard model of elementary particles and fields, such as dark matter and dark energy. Their nature is unknown and so is that of the initial fluctuations in the early Universe that led to ...
E. Komatsu
semanticscholar +1 more source
Early Universe Physics Insensitive and Uncalibrated Cosmic Standards: Constraints on Ωm and Implications for the Hubble Tension [PDF]
To further gain insight into whether pre-recombination models can resolve the Hubble tension, we explore constraints on the evolution of the cosmic background that are insensitive to early universe physics.
Weikang Lin, Xingang Chen, K. Mack
semanticscholar +1 more source
The Snowmass UHECR White Paper on Ultra-High-Energy Cosmic Rays [PDF]
This proceeding summarizes the talk given at the opening of the UHECR 2022 conference in L’Aquila on the whitepaper ‘Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers’ [Astroparticle Physics 149 (2023) 102819 - arXiv:2205.
Schroeder Frank G.+6 more
doaj +1 more source