Results 71 to 80 of about 667 (166)

Oxygen Ion Percentage Inferred From the Cutoff Frequencies of Ionospheric ELF Hiss Emissions

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract The lower cutoff frequency of hiss emissions observed in the ionosphere is controlled by local plasma composition and density. This study identifies 6,340 ionospheric hiss wave events based on observations from the China Seismo‐Electromagnetic Satellite (CSES‐01) from 1 August 2018 to 31 July 2020.
Bin He, Wenlong Liu, Jiangzhao Ai, Dianjun Zhang, Zeren Zhima, Theodore E. Sarris, Li Zeng, Zhao Zhang, Dapeng Liu   +8 more
wiley   +1 more source

Exploring the Sensitivity Limits of Neuronal Current Imaging With MRI and MEG in the Human Brain

Human Brain Mapping, Volume 47, Issue 11, 01 August 2026.
Combined spin‐lock fMRI, MEG, BOLD‐fMRI, and phantom experiments reveal that physiological neuronal magnetic fields lie below the in vivo detection threshold of the current spin‐lock implementations at 3T, defining quantitative sensitivity limits for MR‐based neuronal current imaging. ABSTRACT Conventional BOLD‐fMRI relies on hemodynamic responses that
Milena Capiglioni, Davide Tabarelli, Stefano Tambalo, Federico Turco, Roland Wiest, Jorge Jovicich   +5 more
wiley   +1 more source

Magnetic and Electromagnetic signals related to tectonic activity: updates and new analyses on measurements in Central Italy [PDF]

Natural Hazards and Earth System Sciences, 2005
Tectonomagnetic field observations from absolute magnetic field levels have been collected in Central Italy since 1989 by means of a network of four absolute magnetometer stations, including the geomagnetic observatory of L'Aquila (42°23 N, 13°19 E) used
D. Di Mauro, S. Lepidi, A. Meloni, P. Palangio   +3 more
doaj  

Statistical Survey of Cosmic Noise Absorption in Conjunction With Plasma Wave Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Using a decade of observations from the Canadian Geospace Observatory Riometer Network (GO‐RIO), we selected an east‐west subset of stations near L∼7 $L\sim 7$ to classify cosmic noise absorption (CNA) (a proxy for enhanced D‐region ionization) into two morphologies, simultaneous and drifting, based on the relative timing of signals across the
R. Ghaffari, C. M. Cully, E. Spanswick, R. A. D. Fiori   +3 more
wiley   +1 more source

Optimization Algorithm for Determining the Source Surface Radius Based on Parker Solar Probe In Situ Measurements From Encounters 1 to 19

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract The Potential Field Source Surface (PFSS) extrapolation is a method for estimating the large scale coronal magnetic field from photospheric magnetograms. The source surface serves as the outer boundary of its solution domain, and is typically a spherical surface.
Shiouhe Wang, Fang Shen, Yi Yang, Xueshang Feng, Jiansen He   +4 more
wiley   +1 more source

FREQ‐NESS Reveals Age‐Related Differences in Frequency‐Resolved Brain Networks During Auditory Recognition and Resting State

Annals of the New York Academy of Sciences, Volume 1562, Issue 1, August 2026.
We adapted the FREQ‐NESS pipeline to event‐related MEG data from 140 adults during a melody‐recognition task, revealing an age‐related reorganization of frequency‐specific brain networks. Younger adults showed task‐related reduction in the prominence of alpha networks, whereas older adults maintained prominent slower alpha networks (8.6–10.0 Hz) across
Chiara Malvaso, Gemma Fernández‐Rubio, Mattia Rosso, Elisa Serra, Vera Rudi, Peter Vuust, Morten L. Kringelbach, Claudia Testa, Leonardo Bonetti   +8 more
wiley   +1 more source

Polarization Properties of Whistler Waves From the First 17 Parker Solar Probe Encounters

Geophysical Research Letters
We present statistics on the polarization properties of whistler waves in the solar wind down to 0.05 AU (10.75 RS) using data from Parker Solar Probe's first 17 encounters.
L. Colomban, O. V. Agapitov, V. Krasnoselskikh, K.‐E. Choi, M. Kretzschmar, T. Dudok de Wit, F. S. Mozer, J. W. Bonnell, S. Bale, D. Malaspina, N. E. Raouafi, M. Pulupa   +11 more
doaj   +1 more source

Broadband dark matter axion detection using a cylindrical capacitor

Nuclear Physics B
Cosmological axions/axion-like particles can compose a significant part of dark matter; however, the uncertainty of their mass is large. Here, we propose to search the axions using a cylindrical capacitor, in which the static electric field converts dark
Wenming Chen, Yu Gao, Qiaoli Yang
doaj   +1 more source

Whistler waves generated inside magnetic dips in the young solar wind: observations of the Search-Coil Magnetometer on board Parker Solar Probe [PDF]

, 2023
C. Froment, O. V. Agapitov, V. Krasnoselskikh, S. Karbashewski, Thierry Dudok de Wit, A. Larosa, Lucas Colomban, D. Malaspina, M. Kretzschmar, V. K. Jagarlamudi, S. D. Bale, J. W. Bonnell, F. S. Mozer, M. Pulupa   +13 more
openalex   +3 more sources

Abstracts

Molecular Oncology, Volume 20, Issue S1, Page 1-692, August 2026.
Abstracts submitted to the ‘EACR 2026 Congress: Innovative Cancer Science’, from 08–11 June 2026 and accepted by the Congress Organising Committee are published in this Supplement of Molecular Oncology, an affiliated journal of the European Association for Cancer Research (EACR).
wiley   +1 more source