Results 91 to 100 of about 86,516 (190)

Global Structure of the Cislunar Magnetotail and Its Evolution During Substorms

Journal of Geophysical Research: Space Physics, Volume 130, Issue 7, July 2025.
Abstract So far, the structure and dynamics of the terrestrial magnetotail have largely been investigated within 31RE $31{R}_{E}$ (RE ${R}_{E}$ is the Earth's radius) because of the lack of in‐situ observations beyond that distance, as well as limitations of earlier empirical models.
M. I. Sitnov, G. K. Stephens, A. V. Artemyev, T. Motoba, N. A. Tsyganenko   +4 more
wiley   +1 more source

The rotation and Galactic kinematics of mid M dwarfs in the Solar Neighborhood

, 2015
Rotation is a directly-observable stellar property, and drives magnetic field generation and activity through a magnetic dynamo. Main sequence stars with masses below approximately 0.35Msun (mid-to-late M dwarfs) are fully-convective, and are expected to
Berta-Thompson, Zachory K., Charbonneau, David, Dittmann, Jason A., Irwin, Jonathan, Newton, Elisabeth R., West, Andrew A.   +5 more
core   +1 more source

Latitudinal Dependence of the Solar Wind During Periods of High and Low Activity Through Interplanetary Scintillation

Space Weather, Volume 23, Issue 7, July 2025.
Abstract We present a study of the solar wind over different periods of the solar cycle, specifically focusing on the minimum between solar cycles 24 and 25, and the active, ascending phase of solar cycle 25. With the use of interplanetary scintillation (IPS) data taken by the Murchison Widefield Array (MWA) from mid‐2019 and early 2023, we have ...
A. Waszewski, J. S. Morgan, R. Ekers, M. Johnston‐Hollitt, M. C. M. Cheung, N. D. R. Bhat, R. Chhetri, S. C. Fu   +7 more
wiley   +1 more source

Mapping the Ionosphere Over East Asia Based on Ground‐Based GNSS TEC Data in 2010–2023

Space Weather, Volume 23, Issue 7, July 2025.
Abstract Using total electron content (TEC) data from multiple ground‐based Global Navigation Satellite System (GNSS) receiver networks from 2010 to 2023, we reconstructed ionospheric TEC maps for East Asia. The maps cover longitudes from 70°E to 150°E and latitudes from 20°S to 60°N. The time resolution of reconstructed TEC map was 15 min.
Yuqing Wang, Huijun Le, Libo Liu, Yiding Chen, Bo Xiong, Ruilong Zhang, Bowei Liu, Wenbo Li, Wenjie Sun, Yu Li   +9 more
wiley   +1 more source

Better Forecasting of Extreme Geomagnetic Storms Using Non‐Stationary Statistical Models

Space Weather, Volume 23, Issue 7, July 2025.
Abstract An assessment of the risk of extreme geomagnetic storms is critically important for modern society. However, current methods mainly focus on using stationary statistical models to analyze extreme geomagnetic events. These models ignore the non‐stationary nature of the data, caused by effects of the solar cycle and the seasons, and thus could ...
Ting Wang, David Fletcher, Matthew Parry, Craig J. Rodger, Andy W. Smith, Tanja Petersen   +5 more
wiley   +1 more source

Analog Ensemble Forecasts of Solar Wind Parameters: Quantification of the Predictability and Time‐Domain Spectral Performance

Space Weather, Volume 23, Issue 7, July 2025.
Abstract Forecasting multiscale properties of the solar wind is one of the important aspects of space weather prediction as mesoscales, larger than 1 min, can affect the magnetosphere. Amongst forecasting techniques, the analog ensemble (AnEn) method allows the forecast of a quantity from its past behavior, is easy and quick to implement, and results ...
Pauline A. Simon, Christopher H. K. Chen, Mathew J. Owens, Chaitanya Sishtla   +3 more
wiley   +1 more source

Heliospheric Turbulence: Presidential Budget Request Offers a Bleak Forecast for Space Weather Research

Space Weather, Volume 23, Issue 7, July 2025.
Abstract The presidential budget request (PBR) for fiscal year 2026 in the United States recommends a cut in NASA science funding by more than 45% and the cancellation of a dozen active missions and several missions in design or formulation. Funding reductions at the National Science Foundation (NSF) are even larger and include cancellations of ...
N. Lugaz, B. A. Carter
wiley   +1 more source

Estimation of Reconnection Rate From Soft X‐Ray Emission at the Earth's Dayside Magnetopause

Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract We propose an approach to estimating the reconnection rate by utilizing soft X‐rays emitted during the solar wind charge exchange (SWCX) process at the Earth's magnetopause. Employing a high‐resolution global magnetohydrodynamic (MHD) simulation model of the magnetosphere, we investigated the SWCX emission around the magnetopause during a ...
Ryota Momose, Yosuke Matsumoto, Yoshizumi Miyoshi   +2 more
wiley   +1 more source

An Integrated Analysis of Ozone and Carbon Monoxide Over the Western Pacific Using Satellite and Aircraft Measurements During the ACCLIP Summer Campaign 2022

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 12, 28 June 2025.
Abstract The western Pacific exhibited a complex interplay of monsoonal dynamics and transport during the Asian Summer Monsoon Chemical & Climate Impact Project (ACCLIP) airborne field campaign in summer 2022. We analyze in situ observations of ozone (O3) and carbon monoxide (CO) from 29 research flights—profiling over South Korea and cruising over the
Juseon Bak, Joowan Kim, Ja‐Ho Koo, Laura L. Pan, Ju‐Mee Ryoo, Paul A. Newman, Alessandro Franchin, Xiong Liu, Gonzalo G. Abad, Hyo‐Jung Lee, WonBae Jeon, Cheol‐Hee Kim   +11 more
wiley   +1 more source

Clustering with phylogenetic tools in astrophysics

, 2015
Phylogenetic approaches are finding more and more applications outside the field of biology. Astrophysics is no exception since an overwhelming amount of multivariate data has appeared in the last twenty years or so. In particular, the diversification of
Fraix-Burnet, Didier
core   +1 more source