Results 171 to 180 of about 364,262 (268)

Robust Short‐Term Forecasting of Thermospheric Density and Orbit Prediction Using an Interpretable iTransformer Model

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Accurate short‐term forecasting of thermospheric mass density is crucial for satellite operations. However, achieving high‐precision predictions remains a significant challenge. In this study, we develop an iTransformer framework that forecasts thermospheric density over the next 24 hr using observations from the preceding 24 hr. Using density
Mingyi Zhang, Xiangguang Meng, Xin Wang, Yueqiang Sun, Qifei Du, Weihua Bai, Peng Hu, Zhiqi Zhou   +7 more
wiley   +1 more source

Strong field-driven subcycle band structure modulation and dephasing control. [PDF]

Sci Adv
Walz F, Kumar S, Olounabadi AS, Zhong Y, Zimmerman R, Pandey S, Liu E, Tan LZ, Shivaram N.   +8 more
europepmc   +1 more source

The High‐Latitude Workbox for the Ionosphere (HAWK‐I): A New Toolkit for Real‐Time Specification of the Arctic Ionosphere

Space Weather, Volume 24, Issue 9, September 2026.
Abstract The high‐latitude ionosphere exhibits rapid spatial and temporal variability during geomagnetically active periods, creating persistent challenges for accurate nowcasts. The High‐latitude Workbox for the Ionosphere (HAWK‐I) is a real‐time ionosphere nowcast and specification system designed for operational deployment to address these ...
Patrick Dandenault, Clayton Cantrall, Robert Schaefer, Sebastijan Mrak, Giuseppe Romeo, Lisa Knowles, Cathryn Mitchell, Gary Bust   +7 more
wiley   +1 more source

Enhanced Flexible Vacuum-Ultraviolet Photodetectors Based on Hexagonal Boron Nitride Nanosheets via Al Nanoparticles. [PDF]

Nanomaterials (Basel)
Chen Y, Li J, Li Q, Fang W, Liu H, Lin Z, Wang T, Yun F.   +7 more
europepmc   +1 more source

Ultraviolet Spectrophotometer for Satellite Astronomy.

The Astronomical Journal, 1964
Kenneth Hallam, John Magnus
openaire   +2 more sources

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

Metasurface-enabled astronomical polarimetry. [PDF]

Sci Adv
Li LW, Oakley PHH, Schindhelm RN, Sellers SG, Casini R, Rubin NA.   +5 more
europepmc   +1 more source

Long‐Lived Equatorial Plasma Bubbles Persisting Into the Afternoon Over the Pacific Sector During the Recovery Phase of the April 2023 Geomagnetic Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Equatorial plasma bubbles (EPBs) are typically nighttime ionospheric irregularities, and their persistence into daytime sectors remains insufficiently understood. Here, we investigate long‐lived EPB‐related plasma depletion structures over the Pacific sector during the recovery phase of the 23–25 April 2023 geomagnetic storm using Formosa ...
Hailun Ye, Wen Yi, Jianfei Wu, Bingkun Yu, Penghao Tian, Xianghui Xue, Yajun Zhu, Jianyuan Wang, Jianyong Lu, Jian Li, Chong Wang, Tingdi Chen, Xiankang Dou   +12 more
wiley   +1 more source

Two-layer model via non-quasi-periodic normal form theory. [PDF]

Celest Mech Dyn Astron
Pinzari G, Scoppola B, Veglianti M.
europepmc   +1 more source

Tipping Points in Bacterial Richness Amplify Extracellular Enzyme Activities in Northern Peatlands

Global Change Biology, Volume 32, Issue 9, September 2026.
Using a trans‐Holarctic survey in Sphagnum‐dominated peatlands, we identify a critical bacterial biodiversity threshold. Below this threshold, ecosystem function shifts, increasing enzyme activities by 60%, potentially accelerating carbon turnover. This weakens the peatland carbon sink, emphasizing the need to safeguard diversity.
Vincent E. J. Jassey, Tristan Lafont Rapnouil, Marie Le Geay, Romain Walcker, Laure Gandois, Maialen Barret, Nicolas Fanin, Bjorn J. M. Robroek, Béatrice Lauga, Luke O. Andrews, Alix Badré Greuza, Mark R. Bakker, Guillaume Bertrand, Tobias Birkwald, Paulo A. V. Borges, Brian Branfireun, Francis Q. Brearley, Cécile Brousseau, Zhao‐Jun Bu, Jean‐François Carrias, Sarah Coffinet, Bruno Corbarra, Eduardo M. F. Dias, Ellen Dorrepaal, André‐Jean Francez, Yuwen Fu, Marvin Gabriel, Rosalina Gabriel, Stéphanie Gerin, Daniel Gilbert, Sébastien Gogo, Gustaf Granath, Emma Gray, Liam Heffernan, Thierry J. Heger, Sari Juutinen, Paul Kardol, Edgar Karofeld, Agata Klimkowska, Martin Küttim, Liisa Küttim, Olivia Kuuri‐Riutta, Terri Lacourse, Mariusz Lamentowicz, Gaël Le Roux, Zoë Lindo, Roy Mackenzie, Katarzyna Marcisz, Yuri A. Mazei, Natalia G. Mazei, Cândida M. F. Mendes, Edward A. D. Mitchell, Juanita Mora‐Gomez, Raphael Müller, Kathy Pouliot, Anna‐Helena Purre, Achim Quaiser, Brenda Riquelme‐del Río, Allison R. Rober, Line Rochefort, Ana C. Rodríguez, A. Britta K. Sannel, Fabian Seemann, Laurent Servière, Maria Strack, Graeme T. Swindles, Julie Talbot, Andrey N. Tsyganov, Eeva‐Stiina Tuittila, Alexander T. Tveit, Minna M. Väliranta, Kevin H. Wyatt, Henni Ylänne, Zicheng Yu, Evgeny A. Zarov, Samuel Hamard   +75 more
wiley   +1 more source