Results 71 to 80 of about 1,037 (174)

Fast End-to-End Framework for Cosmological Parameter Inference from Cosmic Microwave Background Data Using Machine Learning

The Astrophysical Journal Letters
Precise estimation of cosmological parameters from the cosmic microwave background (CMB) remains a central goal of modern cosmology and a key test of inflationary physics.
Larissa Santos, Camila P. Novaes, Elisa G. M. Ferreira, Carlo Baccigalupi   +3 more
doaj   +1 more source

Near‐ground microwave radiometry for on‐the‐go surface soil moisture sensing in micro‐irrigated orchards in California

Agrosystems, Geosciences &Environment, Volume 8, Issue 3, September 2025.
Abstract High‐resolution geospatial soil moisture measurements are needed to inform hydrological modeling and to guide water management in agriculture, especially in highly heterogeneous systems such as micro‐irrigated orchards. In this research, we used a Portable L‐band Radiometer (PoLRa) to map very high‐resolution (<2 m) soil surface moisture in ...
Elia Scudiero, Amninder Singh, Gopal R. Mahajan, Dimitrios Chatziparaschis, Jayanta Banik, Konstantinos Karydis, Derek A. Houtz, Todd H. Skaggs   +7 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

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

Attenuation of LHAASO PeVatrons by the Interstellar Radiation Field and Cosmic Microwave Background Radiation

The Astrophysical Journal
“PeVatrons” refer to astrophysical sources capable of accelerating particles to energies around 10 ^15 electron volts and higher, potentially contributing to the cosmic-ray spectrum in the knee region.
Jianli Zhang, YiQing Guo
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

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

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

The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes

The Astrophysical Journal Supplement Series
The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile.
Nicholas Galitzki, Tran Tsan, Jake Spisak, Michael Randall, Max Silva-Feaver, Joseph Seibert, Jacob Lashner, Shunsuke Adachi, Sean M. Adkins, Thomas Alford, Kam Arnold, Peter C. Ashton, Jason E. Austermann, Carlo Baccigalupi, Andrew Bazarko, James A. Beall, Sanah Bhimani, Bryce Bixler, Gabriele Coppi, Lance Corbett, Kevin D. Crowley, Kevin T. Crowley, Samuel Day-Weiss, Mark J. Devlin, Simon Dicker, Brooke DiGia, Peter N. Dow, Cody J. Duell, Shannon M. Duff, Remington G. Gerras, John C. Groh, Jon E. Gudmundsson, Kathleen Harrington, Masaya Hasegawa, Erin Healy, Shawn W. Henderson, Johannes Hubmayr, Jeffrey Iuliano, Bradley R. Johnson, Brian Keating, Ben Keller, Kenji Kiuchi, Anna M. Kofman, Brian J. Koopman, Akito Kusaka, Adrian T. Lee, Richard A. Lew, Lawrence T. Lin, Michael J. Link, Tammy J. Lucas, Marius Lungu, Aashrita Mangu, Jeffrey J McMahon, Amber D. Miller, Jenna E. Moore, Magdy Morshed, Hironobu Nakata, Federico Nati, Laura B. Newburgh, David V. Nguyen, Michael D. Niemack, Lyman A. Page, Kana Sakaguri, Yuki Sakurai, Mayuri Sathyanarayana Rao, Lauren J. Saunders, Jordan E. Shroyer, Junna Sugiyama, Osamu Tajima, Atsuto Takeuchi, Refilwe Tanah Bua, Grant Teply, Tomoki Terasaki, Joel N. Ullom, Jeffrey L. Van Lanen, Eve M. Vavagiakis, Michael R Vissers, Liam Walters, Yuhan Wang, Zhilei Xu, Kyohei Yamada, Kaiwen Zheng   +81 more
doaj   +1 more source