Results 141 to 150 of about 88,907 (241)

Premature Reentry of the Binar CubeSats Due To Underestimation of Solar and Geomagnetic Activities and Its Implication for Importance of Medium‐ and Long‐Term Space Weather Forecasts

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The rapid development of low‐Earth orbit (LEO) satellites brings increased attention to spacecraft collisions, space debris, orbital decay, and satellite reentry. Neutral density and associated drag force on the satellite orbits elevate space risks, significantly determined by space weather disturbances, particularly geomagnetic storms.
Xin Wang, Ronglan Wang, Kunpeng Wang, Zhitao Yang, Tingling Ren, Jifeng Cao, Ming Li, Siqing Liu, Bingxian Luo, Chi Wang   +9 more
wiley   +1 more source

Tracing the heliospheric magnetic field via anisotropic radio-wave scattering. [PDF]

Sci Rep
Clarkson DL, Kontar EP, Chrysaphi N, Emslie AG, Jeffrey NLS, Krupar V, Vecchio A.   +6 more
europepmc   +1 more source

An Extreme Events Study of the Storm‐Time Variations in Satellite Drag Coefficients

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This study examines storm‐time variations in the drag coefficients CD $\left({C}_{D}\right)$ of the GRACE and GRACE Follow‐On (FO) satellites during selected extreme geomagnetic storms—the October 2003, November 2003, November 2004, and May 2024 storms.
Soumyajit Dey, Phillip C. Anderson, Marcin D. Pilinski, Eric K. Sutton, Aaron L. Bukowski   +4 more
wiley   +1 more source

A transiting giant planet in orbit around a 0.2-solar-mass host star. [PDF]

Nat Astron
Bryant EM, Jordán A, Hartman JD, Bayliss D, Sedaghati E, Barkaoui K, Chouqar J, Pozuelos FJ, Thorngren DP, Timmermans M, Almenara JM, Chilingarian IV, Collins KA, Gan T, Howell SB, Narita N, Palle E, Rackham BV, Triaud AHMJ, Bakos GÁ, Brahm R, Hobson MJ, Van Eylen V, Amado PJ, Arnold L, Bonfils X, Burdanov A, Cadieux C, Caldwell DA, Casanova V, Charbonneau D, Clark CA, Collins KI, Daylan T, Dransfield G, Demory BO, Ducrot E, Fernández-Rodríguez G, Fukuda I, Fukui A, Gillon M, Gore R, Hooton MJ, Ikuta K, Jehin E, Jenkins JM, Levine AM, Littlefield C, Murgas F, Nguyen K, Parviainen H, Queloz D, Seager S, Sebastian D, Srdoc G, Vanderspek R, Winn JN, de Wit J, Zúñiga-Fernández S.   +58 more
europepmc   +1 more source

First Climatology of Apex Altitudes for Intermediate‐Scale Irregularities: Evaluation of Solar and Geomagnetic Activity Contributions to Very High Apex Events

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This work presents the first climatology of apex altitudes for intermediate‐scale plasma density irregularities based on long‐term observations spanning more than 13 years (01/2012–05/2025). Amplitude scintillation data from ground‐based receivers, covering apex altitudes between 605 and 2,360 km over the same magnetic meridian, were used ...
J. Sousasantos, A. O. Moraes, J. F. G. Monico, R. W. Eastes   +3 more
wiley   +1 more source

Chip-integrated spectroscopy capable of temperature retrieval. [PDF]

Sci Rep
Du Y, Sua YM, Kumar S, Zhang J, Li X, Hu Y, Ghuman P, Huang Y.   +7 more
europepmc   +1 more source

Extra Ionization Causing the Anomalous Auroral Sporadic E Layer (Esa) Over the Equatorial Brazilian Region During the Recovery Phase of the Magnetic Storm on 10 May 2024

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The center of the South American Magnetic Anomaly (SAMA), located in southern Brazil, is characterized by enhanced energetic particle precipitation (EPP) at low energies (<40 keV), which can significantly impact the ionosphere during intense geomagnetic storms.
L. C. A. Resende, Y. Zhu, R. A. J. Chagas, C. M. Denardini, K. V. S. Espinosa, S. S. Chen, L. A. Da Silva, L. R. Alves, J. Moro, S. R. Laranja, A. M. Santos, V. F. Andrioli, L. L. Campos, J. P. Marchezi, J. R. Costa, C. Wang, H. Li, Z. Liu   +17 more
wiley   +1 more source

Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations. [PDF]

Open Res Eur
Wedemeyer S, Barta M, Brajša R, Chai Y, Costa J, Gary D, Gimenez de Castro G, Gunar S, Fleishman G, Hales A, Hudson H, Kirkaune M, Mohan A, Motorina G, Pellizzoni A, Saberi M, Selhorst CL, Simoes PJA, Shimojo M, Skokić I, Sudar D, Menezes F, White SM, Booth M, Klaassen P, Cicone C, Mroczkowski T, Cordiner MA, Di Mascolo L, Johnstone D, van Kampen E, Lee M, Liu D, Maccarone T, Orlowski-Scherer J, Saintonge A, Smith M, Thelen AE.   +37 more
europepmc   +1 more source

Unusual SuperDARN Backscatter During the 11 May 2024 Geomagnetic Storm

Space Weather, Volume 23, Issue 12, December 2025.
Abstract A geomagnetic storm, one of the largest in this solar cycle, was launched on 10 May 2024, producing spectacular auroral displays that could be observed across the continental United States (US) at middle and low latitudes. In this study, we focus on a brief 20‐min interval during the peak of the storm when the Sym‐H index dropped to ∼ ${\sim} $
B. S. R. Kunduri, J. B. H. Baker, J. M. Ruohoniemi, J.‐P. St. Maurice, Y. Nishimura, P. J. Erickson, J. C. Foster, S. E. Milan, K. T. Sterne, E. G. Thomas   +9 more
wiley   +1 more source

Stellar structure via truncated M-fractional Lane-Emden solutions. [PDF]

Sci Rep
Nouh MI, Abdel-Salam EA, Hassaballa AA, Awad AM, Jazmati MS, Bahgat MSM.   +5 more
europepmc   +1 more source