Results 71 to 80 of about 257,498 (300)

Calibration of a Polarimetric Microwave Radiometer Using a Double Directional Coupler

Remote Sensing, 2021
This paper presents a built-in calibration procedure of a 10-to-20 GHz polarimeter aimed at measuring the I, Q, U Stokes parameters of cosmic microwave background (CMB) radiation.
Luisa de la Fuente, Beatriz Aja, Enrique Villa, Eduardo Artal   +3 more
doaj   +1 more source

Making Use of Low‐Cost High‐Pressure–High‐Temperature‐Diamond Materials for Industry‐Type Quantum Sensor Device Applications

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, Christoph Wild, Wolfgang Knolle, Muhammad B. Javed, Jens Fuhrmann, Tobias Lühmann, Steffanie Reiss, Jan B. Meijer, Thomas Ortlepp   +8 more
wiley   +1 more source

Effects of Scattering of Radiation on Wormholes

Universe, 2018
Significant progress in the development of observational techniques gives us the hope to directly observe cosmological wormholes. We have collected basic effects produced by the scattering of radiation on wormholes, which can be used in observations ...
Alexander Kirillov, Elena Savelova
doaj   +1 more source

Impact of Sudden Stratospheric Warming and Elevated Stratopause Events on the Very Low Frequency Radio Signal

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, V. Wendt, D. Banyś, M. Hansen, M. Clilverd, P. T. Verronen   +5 more
wiley   +1 more source

Large-scale polarization of the cosmic microwave background radiation

Physical Review D, 1995
14 pages, LaTeX style, IP-ASTP-08-93, 2 revised figures available upon ...
Kin-Wang Ng, Ka Lok Ng
openaire   +4 more sources

Testing the ΛCDM Cosmological Model with Forthcoming Measurements of the Cosmic Microwave Background with SPT-3G

The Astrophysical Journal
We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope.
K. Prabhu, S. Raghunathan, M. Millea, G. P. Lynch, P. A. R. Ade, E. Anderes, A. J. Anderson, B. Ansarinejad, M. Archipley, L. Balkenhol, K. Benabed, A. N. Bender, B. A. Benson, F. Bianchini, L. E. Bleem, F. R. Bouchet, L. Bryant, E. Camphuis, J. E. Carlstrom, T. W. Cecil, C. L. Chang, P. Chaubal, P. M. Chichura, A. Chokshi, T.-L. Chou, A. Coerver, T. M. Crawford, A. Cukierman, C. Daley, T. de Haan, K. R. Dibert, M. A. Dobbs, A. Doussot, D. Dutcher, W. Everett, C. Feng, K. R. Ferguson, K. Fichman, A. Foster, S. Galli, A. E. Gambrel, R. W. Gardner, F. Ge, N. Goeckner-Wald, R. Gualtieri, F. Guidi, S. Guns, N. W. Halverson, E. Hivon, G. P. Holder, W. L. Holzapfel, J. C. Hood, A. Hryciuk, N. Huang, F. Kéruzoré, L. Knox, M. Korman, K. Kornoelje, C.-L. Kuo, A. T. Lee, K. Levy, A. E. Lowitz, C. Lu, A. Maniyar, F. Menanteau, J. Montgomery, Y. Nakato, T. Natoli, G. I. Noble, V. Novosad, Y. Omori, S. Padin, Z. Pan, P. Paschos, K. A. Phadke, A. W. Pollak, W. Quan, M. Rahimi, A. Rahlin, C. L. Reichardt, M. Rouble, J. E. Ruhl, E. Schiappucci, G. Smecher, J. A. Sobrin, A. A. Stark, J. Stephen, A. Suzuki, C. Tandoi, K. L. Thompson, B. Thorne, C. Trendafilova, C. Tucker, C. Umilta, A. Vitrier, J. D. Vieira, Y. Wan, G. Wang, N. Whitehorn, W. L. K. Wu, V. Yefremenko, M. R. Young, J. A. Zebrowski   +102 more
doaj   +1 more source

On the origin of the diffuse gamma-ray background radiation [PDF]

, 2006
We show that inverse Compton scattering of cosmic-microwave-background and starlight photons by cosmic-ray electrons in the interstellar and intergalactic space explains well the spectrum and intensity of the diffuse gamma-ray background radiation (GBR),
Dado, Shlomo, Dar, Arnon, De Rujula, A
core   +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

Revisiting the A L Lensing Anomaly in Planck 2018 Temperature Data

The Astrophysical Journal
We revisit the lensing anomaly in the Planck 2018 temperature (TT) data and examine its robustness to frequency selection and additional sky masking. Our main findings are as follows.
Graeme E. Addison, Charles L. Bennett, Mark Halpern, Gary Hinshaw, Janet L. Weiland   +4 more
doaj   +1 more source

Fast Solution of Sylvester‐Structured Systems for Spatial Source Separation of the Cosmic Microwave Background

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, Kirk M. Soodhalter, Simon Wilson   +2 more
wiley   +1 more source