Results 91 to 100 of about 6,884 (245)
Journal of Geophysical Research: Space Physics, Volume 130, Issue 7, July 2025.Abstract The study of solar and geomagnetic activity effects on the D‐region ionosphere (60–90 km altitude) using signals from very low frequency and low frequency (VLF, 3–30 kHz) transmitters has garnered considerable attention over the past decades. This research investigates the impacts of the geomagnetic storm (GMS) of 23–24 March 2023, utilizing ...
Muyiwa P. Ajakaiye +2 more
wiley +1 more source
Testing CCC+TL Cosmology with Observed Baryon Acoustic Oscillation Features
The Astrophysical JournalThe 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
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GalaxiesThe development of multimessenger astrophysics allows us to probe various background particles from the distant early universe. Up to now, much effort has been made researching the emission and radiation of diverse steady or transient astrophysical ...
Fangsheng Min, Hong Lu, Yiqing Guo
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Comments and Summary on the Cosmic Background Radiation [PDF]
Symposium - International Astronomical Union, 1983 This session on the cosmic background radiation is remarkable for the quality of the interesting new results presented and the controversy over substantive issues. This paper reviews the status of measurements of the spectrum and anisotropy of the cosmic background and summarizes what is known of the properties of the cosmic background radiation: its ...
openaire +3 more sources
KOLMOGOROV COMPLEXITY, COSMIC BACKGROUND RADIATION AND IRREVERSIBILITY [PDF]
The Physics of Communication, 2003 We discuss the algorithmic information approach to the analysis of the observational data on the Universe. Kolmogorov complexity is proposed as a descriptor of the Cosmic Microwave Background (CMB) radiation maps. An algorithm of computation of the complexity is described, applied, first, to toy models and then, to the data of the Boomerang experiment.
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Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract The Community Earth System Model (CESM) Whole Atmosphere Community Climate Model with thermosphere‐ionosphere eXtension (WACCM‐X) is used to investigate how the ionosphere‐thermosphere response to a May 2024‐like geomagnetic storm changes with increasing greenhouse gases.
Nicholas M. Pedatella +4 more
wiley +1 more source
The temperature of the cosmic microwave background radiation at a frequency of 10 GHz [PDF]
, 1988 A. Kogut +8 more
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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 +13 more
wiley +1 more source
Measurement of the cosmic background radiation temperature at 3.0 cm [PDF]
, 1984 S. D. Friedman +3 more
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A Measurement of the Largest-scale CMB E-mode Polarization with CLASS
The Astrophysical JournalWe 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 +36 more
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