Results 71 to 80 of about 78,343 (241)
physica status solidi (a), Volume 222, Issue 5, March 2025.A cost‐effective approach to produce diamond platelets with nitrogen vacancy center (NV) ensemble range is investigated. NVs are generated in industrially produced high‐pressure–high‐temperature type 1b diamonds by high‐energy electron irradiation of 10 MeV and annealing.
Mario Bähr +8 more
wiley +1 more source
The Signature of Proper Motion in the Microwave Sky
, 2010 The cosmic microwave background radiation defines a preferred cosmic rest frame, and inflationary cosmological theories predict that the microwave background temperature fluctuations should be statistically isotropic in this rest frame.
Arthur Kosowsky +2 more
core +1 more source
The Unexploited Treasures of Hydrological Observations Beyond Streamflow for Catchment Modeling
WIREs Water, Volume 12, Issue 2, March/April 2025.Caption: In situ and satellite‐based observations of hydrological variables beyond streamflow are valuable to improve modeling catchment hydrology (modified from Fisher 2005; CC BY‐SA 4.0). ABSTRACT While measured streamflow is commonly used for hydrological model evaluation and calibration, an increasing amount of data on additional hydrological ...
Paul D. Wagner +16 more
wiley +1 more source
Correlations between 21 cm Radiation and the CMB from Active Sources
, 2010 Neutral hydrogen is ubiquitous, absorbing and emitting 21 cm radiation throughout much of the Universe's history. Active sources of perturbations, such as cosmic strings, would generate simultaneous perturbations in the distribution of neutral hydrogen ...
Aaron Berndsen +39 more
core +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.Abstract Sudden Stratospheric Warmings (SSW) and Elevated Stratopause (ES) events are mid‐to‐high latitudinal, atmospheric wave‐driven phenomena leading to significant changes in wind, temperatures, and vertical mass transport, especially at stratospheric and mesospheric altitudes.
H. Schneider +5 more
wiley +1 more source
Current Status of the Cosmic Microwave Background Radiation [PDF]
Symposium - International Astronomical Union, 1999 My goal is to summarize our understanding of the cosmic microwave background radiation (CMBR) at this interesting moment after the detection of fluctuations in the background and before the next generation of satellite experiments. I begin by listing recent reviews and papers on the spectrum of the CMBR.
openaire +2 more sources
Recent Developments in Degenerate Higher Order Scalar Tensor Theories
Annalen der Physik, Volume 537, Issue 2, February 2025.Degenerate Higher Order Scalar Tensor theories are reviewed, together with their applications in cosmology and astrophysics. These theories have been applied to build models of the early universe, in the description of the late‐time cosmic acceleration, as well as in astrophysics, including black hole physics. They have the potential to provide answers
Andrei Lazanu
wiley +1 more source
Numerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.ABSTRACT Implementation of many statistical methods for large, multivariate data sets requires one to solve a linear system that, depending on the method, is of the dimension of the number of observations or each individual data vector. This is often the limiting factor in scaling the method with data size and complexity.
Dung Pham +2 more
wiley +1 more source
Density Perturbations of Quantum Mechanical Origin and Anisotropy of the Microwave Background
, 1994 If the large-angular-scale anisotropy in the cosmic microwave background radiation is caused by the long-wavelength cosmological perturbations of quantum mechanical origin, they are, most likely, gravitational waves, rather than density perturbations or ...
A. Albrecht +34 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