Results 61 to 70 of about 54,682 (254)

Does the Correlation between 2MRS Galaxies and the CMB Indicate an Unmodeled CMB Foreground?

The Astrophysical Journal
We 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

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

Cosmic 21-cm Fluctuations as a Probe of Fundamental Physics

, 2007
Fluctuations in high-redshift cosmic 21-cm radiation provide a new window for observing unconventional effects of high-energy physics in the primordial spectrum of density perturbations.
Batra P Kleban M, Biswas T, Bousso R, Cooray A, Freivogel B, Hogan C J, Ian Swanson, Kaloper N, Khatri R Wandelt B D, Khoury J, Kolb E W Chung D J H Riotto A, Kris Sigurdson, Lewis A Challinor A, Matthew Kleban, Metcalf R B White S D M, Pillepich A Porciani C Matarrese S, Pritchard J R Furlanetto S R, Scott D, Shchekinov Y A Vasiliev E O, Starobinsky A A, Sunyaev R A, Susskind L, Tanaka T, Wang X M Tegmark M Santos M Knox L   +23 more
core   +1 more source

Tropical Tropopause Layer Evolution During QBO Disruptions

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 18, 28 September 2025.
Abstract The tropical tropopause layer (TTL) is studied during 2015/16 and 2019/20 quasi‐biennial oscillation (QBO) disruption events using GNSS‐RO and SWOOSH satellite observations and the ERA5 reanalysis. By compositing temperature, water vapor, and tropical upwelling during different phases of QBO and QBO disruptions (XQBO), we show that XQBO events
Lan Luan, Paul W. Staten, William J. Randel, Ying‐Hwa Kuo   +3 more
wiley   +1 more source

A common origin of all the species of high-energy cosmic rays? [PDF]

, 1999
Cosmic ray nuclei, cosmic ray electrons with energy above a few GeV, and the diffuse gamma-ray background radiation (GBR) above a few MeV, presumed to be extragalactic, could all have their origin or residence in our galaxy and its halo.
Antoniou, Nikos, Dar, Arnon, De Rújula, A.   +2 more
core   +1 more source

Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy [PDF]

, 2006
Cosmological consequences of a string-motivated dark energy scenario featuring a scalar field coupled to the Gauss-Bonnet invariant are investigated. We study the evolution of the universe in such a model, identifying its key properties. The evolution of
Amendola, Antoniadis, Antoniadis, Calcagni, Calcagni, Callan, Carter, Carter, Clifton, Copeland, David F. Mota, De Felice, Dine, Gross, Hwang, Koivisto, Koivisto, Lewis, Ma, Neupane, Neupane, Nojiri, Nojiri, Nojiri, Nojiri, Odman, Riess, Sami, Spergel, Tegmark, Tomi Koivisto, Uzan, Wang   +32 more
core   +3 more sources

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

The Cosmic Microwave Background Optical Depth Constrains the Duration of Reionization

The Astrophysical Journal Letters
Recently, it was pointed out that invoking a large value of the cosmic microwave background (CMB) optical depth, τ _CMB  = 0.09, could help resolve tensions between Dark Energy Survey Instrument DR2 baryon acoustic oscillation data and the CMB.
Christopher Cain, Alexander Van Engelen, Kevin S. Croker, Darby Kramer, Anson D’Aloisio, Garett Lopez   +5 more
doaj   +1 more source

Ultra-high energy cosmic rays threshold in Randers-Finsler space

, 2008
Kinematics in Finsler space is used to study the propagation of ultra high energy cosmic rays particles through the cosmic microwave background radiation. We find that the GZK threshold is lifted dramatically in Randers-Finsler space.
Bao D, Chang Zhe, Gibbons G W, Kifune T, Kluzniak W, Kostelecky V A, Lawrence M A, Li X, Li Xin, Sato H, Takeda M, Zatsepin G T   +11 more
core   +1 more source

Deciphering Pleistocene Fault Activity in the Eastern Alps: Dating Fault Gouges With Electron Spin Resonance and Optically Stimulated Luminescence

Tectonics, Volume 44, Issue 8, August 2025.
Abstract The Eastern Alps have been influenced by post‐collisional indentation tectonics since the Miocene. Currently, Adria‐Europe convergence, albeit slow, is accommodated and distributed across several faults. The seismogenic potential of some of these faults is unclear. We applied optically stimulated luminescence (OSL) and electron spin resonance (
E. Prince, S. Tsukamoto, C. Grützner, M. Bülhoff, K. Ustaszewski   +4 more
wiley   +1 more source