Results 81 to 90 of about 54,682 (254)

Geophysical tools for agricultural management: Trends, challenges, and opportunities

Vadose Zone Journal, Volume 24, Issue 4, July/August 2025.
Abstract Agrogeophysics is a convergence of proximal soil sensing and hydrogeophysics in which geophysical methods are used to describe soil patterns and dynamics that shape agronomic management (including precision agriculture). To fully realize its potential for optimizing agricultural production, current barriers and targets for future ...
Sophia M. Becker, Trenton E. Franz, Yufeng Ge, Joe D. Luck, Derek M. Heeren   +4 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, A. D. Sakharov, A. H. Guth, A. Linde, C. W. Misner, D. D. Harari, E. M. Lifshitz, E. W. Kolb, E. W. Kolb, F. Atrio Barandela, G. Chibisov, G. F. Smoot, G. F. Smoot, J. M. Bardeen, J. R. Bond, K. Ganger, L. D. Landau, L. D. Landau, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, L. P. Grishchuk, M. S. Turner, P. J. E. Peebles, P. J. E. Peebles, R. Brandenberger, R. K. Sachs, V. A. Belinsky, V. F. Mukhanov, V. N. Lukash   +34 more
core   +2 more sources

WACCM Simulation of Polar Ozone Response to Relativistic Electron Precipitation

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Various studies have been dedicated to quantifying the atmospheric chemical effects of energetic electron precipitation (EEP), but the contribution from relativistic electron precipitation (REP) was largely overlooked. Based on the precipitating fluxes estimated from Polar‐orbiting Observational Environmental Satellites, we quantify the REP ...
Yudi Pan, Wei Xu, Xudong Gu, Binbin Ni, Joshua M. Pettit, Hilde Nesse, Jingyuan Feng, Shiwei Wang, Wen Cheng, Haotian Xu, Wenchen Ma, Dongfang Zhai, Hanqing Shi, Robert A. Marshall   +13 more
wiley   +1 more source

Testing CCC+TL Cosmology with Observed Baryon Acoustic Oscillation Features

The Astrophysical Journal
The primary purpose of this paper is to see how well a recently proposed new model fits (a) the position of the baryon acoustic oscillation (BAO) features observed in the large-scale distribution of galaxies and (b) the angular size measured for the ...
Rajendra P. Gupta
doaj   +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 ...
Ng, Ka Lok, Ng, Kin-Wang
openaire   +3 more sources

Analysis of Polarized Dust Emission Using Data from the First Flight of SPIDER

The Astrophysical Journal
Using data from the first flight of Spider and from the Planck High Frequency Instrument, we probe the properties of polarized emission from interstellar dust in the Spider observing region.
P. A. R. Ade, M. Amiri, S. J. Benton, A. S. Bergman, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi, O. Doré, A. J. Duivenvoorden, H. K. Eriksen, J. P. Filippini, A. A. Fraisse, K. Freese, M. Galloway, A. E. Gambrel, N. N. Gandilo, K. Ganga, S. Gourapura, R. Gualtieri, J. E. Gudmundsson, M. Halpern, J. Hartley, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, Z. Huang, K. D. Irwin, W. C. Jones, A. Karakci, C. L. Kuo, Z. D. Kermish, J. S.-Y. Leung, S. Li, D. S. Y. Mak, P. V. Mason, K. Megerian, L. Moncelsi, T. A. Morford, J. M. Nagy, C. B. Netterfield, M. Nolta, R. O’Brient, B. Osherson, I. L. Padilla, B. Racine, A. S. Rahlin, C. Reintsema, J. E. Ruhl, M. C. Runyan, T. M. Ruud, J. A. Shariff, E. C. Shaw, C. Shiu, J. D. Soler, X. Song, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, J. F. van der List, A. C. Weber, I. K. Wehus, D. V. Wiebe, E. Y. Young, Spider Collaboration   +69 more
doaj   +1 more source

What does cosmology teach us about non-gravitational properties of dark matter?

Nuclear Physics B
Cosmological observations provide our most robust evidence for dark matter that is (approximately) collisionless and cold, and furthermore can provide powerful tests of the non-gravitational properties of dark matter.
Tracy R. Slatyer
doaj   +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

Refitting Cosmological Data with Neutrino Mass and Degeneracy

The Astrophysical Journal Letters
A simple and natural extension of the standard Lambda cold dark matter (ΛCDM) model is to allow relic neutrinos to have finite chemical potentials. We confront this ΛCDM ξ model, a ΛCDM with neutrino mass M _ν and degeneracy ξ _3 as additional parameters,
Shek Yeung, Wangzheng Zhang, Ming-chung Chu   +2 more
doaj   +1 more source

A Measurement of the Largest-scale CMB E-mode Polarization with CLASS

The Astrophysical Journal
We present measurements of large-scale cosmic microwave background E -mode polarization from the Cosmology Large Angular Scale Surveyor 90 GHz data. Using 115 det-yr of observations collected through 2024 with a variable-delay polarization modulator, we ...
Yunyang Li, Joseph R. Eimer, John W. Appel, Charles L. Bennett, Michael K. Brewer, Sarah Marie Bruno, Ricardo Bustos, Carol Yan Yan Chan, David T. Chuss, Joseph Cleary, Sumit Dahal, Rahul Datta, Jullianna Denes Couto, Kevin L. Denis, Rolando Dünner, Thomas Essinger-Hileman, Kathleen Harrington, Kyle Helson, Johannes Hubmayr, Jeffrey Iuliano, John Karakla, Tobias A. Marriage, Nathan J. Miller, Carolina Morales Perez, Lucas P. Parker, Matthew A. Petroff, Rodrigo A. Reeves, Karwan Rostem, Caleigh Ryan, Rui Shi, Koji Shukawa, Deniz A. N. Valle, Duncan J. Watts, Janet L. Weiland, Edward J. Wollack, Zhilei Xu, Lingzhen Zeng   +36 more
doaj   +1 more source