Results 81 to 90 of about 257,498 (300)
Planck Dust Polarization Power Spectra Are Consistent with Strongly Supersonic Turbulence
The Astrophysical JournalThe polarization of the cosmic microwave background is rich in information but obscured by foreground emission from the Milky Way’s interstellar medium (ISM). To uncover relationships between the underlying turbulent ISM and the foreground power spectra,
Kye A. Stalpes +2 more
doaj +1 more source
Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
Scientific Reports, 2017 The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation – apart from controlling astrophysical uncertainties.
Denise Boncioli +2 more
doaj +1 more source
Sneutrino condensate source for density perturbations, leptogenesis and low reheat temperature [PDF]
, 2004 We bring together some known ingredients beyond the Standard Model physics which can explain the hot Big Bang model with the observed baryon asymmetry and also the fluctuations in the cosmic microwave background radiation with a minimal set of ...
Abdel Pérez-Lorenzana +4 more
core +2 more sources
On the Square Speed of Sound in High‐Energy Collisions: Range of Values and How to Understand It
Advances in High Energy Physics, Volume 2025, Issue 1, 2025.After reviewing the sound speeds in various forms and conditions of matter, we investigate the sound speed of hadronic matter that has decoupled from the hot and dense system formed during high‐energy collisions. We comprehensively consider factors such as energy loss of the incident beam, rapidity shift of leading nucleons, and the Landau hydrodynamic
Ting-Ting Duan +3 more
wiley +1 more source
Does the Correlation between 2MRS Galaxies and the CMB Indicate an Unmodeled CMB Foreground?
The Astrophysical JournalWe revisit the claimed detection of a new cosmic microwave background (CMB) foreground based on the correlation between low-redshift Two Micron All Sky Survey Redshift Survey (2MRS) galaxies and CMB temperature maps from the Planck and Wilkinson ...
Graeme E. Addison
doaj +1 more source
Is the diffuse gamma background radiation generated by galactic cosmic rays? [PDF]
, 2000 We explore the possibility that the diffuse gamma-ray background radiation (GBR) at high galactic latitudes could be dominated by inverse Compton scattering of cosmic ray (CR) electrons on the cosmic microwave background radiation and on starlight from ...
Dar, Arnon, De Rújula, A.
core +3 more sources
Small Structures, Volume 5, Issue 12, December 2024.A detailed investigation of the structural evolution of 3D lithiophilic (Ag)–lithiophobic (Cu) carbon fibers at different carbonization temperatures and the corresponding correlation between the structural features and Li deposition is performed. Particular emphasis is placed on understanding how changes in the carbon structure, along with the size and
Dana Schmidt +13 more
wiley +1 more source
Forecast of Foreground Cleaning Strategies for AliCPT-1
The Astrophysical Journal Supplement SeriesWe report the test results of several independent foreground cleaning pipelines used in the Ali CMB Polarization Telescope experiment (AliCPT-1), a high-altitude cosmic microwave background (CMB) imager in the Northern Hemisphere with thousands of ...
Junzhou Zhang +19 more
doaj +1 more source
Geophysical Research Letters, Volume 51, Issue 21, 16 November 2024.Abstract A factor of 2 difference is found between microwave brightness temperature (TB) observations and simulations from vector radiative transfer models. A physical explanation of this difference is related to the calibration process. In principle, for the calibration of polarimetric instruments of a total power radiometer, the radiation should be ...
Ziqiang Zhu, Fuzhong Weng
wiley +1 more source
Using cosmic microwave background radiation analysis tools for flow anisotropies in relativistic heavy-ion collisions [PDF]
, 2008 Recently we have shown that there are crucial similarities in the physics of cosmic microwave background radiation (CMBR) anisotropies and the flow anisotropies in relativistic heavy-ion collision experiments (RHICE).
A. P. Mishra +3 more
semanticscholar +1 more source