Results 141 to 150 of about 6,211,798 (244)

Uranus's Highly Nonaxisymmetric Magnetopause and Its Impact on Magnetic Reconnection

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Mass and energy fluxes from the solar wind can access a planet's magnetosphere through dayside magnetic reconnection. The plasma and magnetic field conditions on either side of the magnetopause determine whether reconnection is suppressed. However, magnetosheath conditions are sensitive to the shape of the magnetopause, and deviations from ...
Jack H. Crump, Ali H. Sulaiman, Xianzhe Jia, Sophia Zomerdijk‐Russell, Adam Masters   +4 more
wiley   +1 more source

Determining the Nature of IC 10 X-2: A Comprehensive Study of the Optical/IR Emission from an Extragalactic BeHMXB

The Astrophysical Journal
We present a comprehensive analysis of the optical and infrared (IR) properties of high-mass X-ray binary (HMXB) IC 10 X-2, classified as a supergiant HMXB and superfast X-ray transient by previous work.
Jwaher Alnaqbi, Joseph D. Gelfand, Payaswini Saikia, Craig Heinke, M. C. Baglio, David M. Russell, Guobao Zhang, Antonios Manousakis, Ivan Yu. Katkov, Fraser Lewis   +9 more
doaj   +1 more source

Building the Andean Crust at ∼35°S: Arc Geochemistry Reveals Cretaceous Thinning and Rapid Neogene Thickening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Quantification of the timing and mechanisms of crustal thickening in Cordilleran orogenic hinterlands remains challenging. We address this in the Andes using whole‐rock geochemistry and zircon petrochronology from a >70 Myr volcanic record in the Tinguiririca valley of Chile (∼35° ${}^{\circ}$S), which captures a pivotal transition from ...
Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Andrés Echaurren, Matías Barrionuevo, Jesse G. Mosolf, Michelle L. Foley, Mihai N. Ducea   +8 more
wiley   +1 more source

High-velocity Blue-shifted Fe xxv Heα Line during a Superflare of the RS Canum Venaticorum–type Star IM Peg

The Astrophysical Journal Letters
The Monitor of All-sky X-ray Image (MAXI) detected a superflare, releasing 5 × 10 ^37 erg in 2−10 keV, of the RS CVn-type star IM Peg at 10:41 UT on 2023 July 23 with its Gas Slit Camera (2−30 keV).
Shun Inoue, Wataru Buz Iwakiri, Teruaki Enoto, Hiroyuki Uchida, Miki Kurihara, Masahiro Tsujimoto, Yuta Notsu, Kenji Hamaguchi, Keith Gendreau, Zaven Arzoumanian, Takeshi Go Tsuru   +10 more
doaj   +1 more source

Michigan Geospace Model With Ensemble Forecasting and Particle Filtering: Modeling the May 2024 Extreme Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This paper introduces an updated version of the University of Michigan Geospace model. The Geospace model has been used for operational forecasting at the Space Weather Modeling Center of the National Oceanic and Atmospheric Agency since 2016 with regular updates. The current operational version, Geospace V2, was launched in 2021 and is driven
Gábor Tóth, Pauline Dredger, Tuija Pulkkinen   +2 more
wiley   +1 more source

Benchmarking Deep Learning Models for Real‐Time Prediction of Post‐Peak Solar Flare Irradiance Using FISM2 Data

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This study presents a deep learning framework for real‐time prediction of post‐peak solar flare irradiance. The model targets the soft X‐ray band (0.1–0.8 nm) and three extreme ultraviolet (EUV) wavelength bands (9.0–9.9 nm, 13.0–13.9 nm, and 30.0–30.9 nm), and produces forecasts at 1‐min cadence for 3 hr after the flare peak.
Jeong‐Heon Kim, Junmu Youn, Sung‐Hong Park, Seungwoo Ahn, Young‐Sil Kwak, Yong‐Jae Moon, P. C. Chamberlin   +6 more
wiley   +1 more source

Spectral Analysis of the X-Ray Flares in the 2023 Outburst of the New Black Binary Transient Swift J1727.8–1613 Observed with Insight-HXMT

The Astrophysical Journal
The new black hole transient Swift J1727.8–1613 exhibited a series of X-ray flares during its 2023 outburst extensively observed with Insight-HXMT. We analyze the spectra of the flaring period using a series of models consisting of a multicolor disk and ...
Jia-Ying Cao, Jin-Yuan Liao, Shuang-Nan Zhang, Hua Feng, Jin-Lu Qu, Liang Zhang, He-Xin Liu, Wei Yu, Qing-Chang Zhao, Jing-Qiang Peng, Ming-Yu Ge, Lian Tao, Yan-Jun Xu, Shu Zhang, Zi-Xu Yang   +14 more
doaj   +1 more source

Iono‐PhyTAU: A Lightweight Global Ionospheric TEC Prediction Model Based on Temporal Attention Unit and Physical Condition Constraints of the Ionosphere

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Ionospheric Total Electron Content (TEC) is the primary error source causing signal delay in Global Navigation Satellite Systems (GNSS). High‐precision TEC prediction is essential for positioning, navigation, and space weather monitoring. Although deep learning models including ConvLSTM, ConvGRU, and Transformer have advanced TEC forecasting ...
Yiling Gui, Yajun Xu, Song Jia, Miaomiao Wang, Boyang Hao, Xinjie Wu   +5 more
wiley   +1 more source

A Universal Correlation between the Duration and the X-ray Luminosity in Stellar Flares [PDF]

Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017), 2018
Yohko Tsuboi, \\"Ryo Sasaki\\", \\"Yasuharu Sugawara\\", \\"Masaru Matsuoka\\"   +3 more
openaire   +1 more source

Evaluating Fragmentation Detection in Block Caves Using Synthetic Muon Tomography

Geophysical Prospecting, Volume 74, Issue 7, September 2026.
ABSTRACT Muon tomography is a geophysical imaging technique with growing application across a range of geological and industrial settings. By observing the arrival of naturally occurring muons, it is possible to reconstruct subsurface density distributions in three dimensions.
M. A. McLean, R. Seikel, F. Scutti, A. R. Duffy   +3 more
wiley   +1 more source