Results 71 to 80 of about 20,265 (219)

Analysis of Ionospheric Disturbances Near 120°E in the Asia‐Pacific Sector During the May 2024 Superstorm Using Multi‐Instrument Observations

Space Weather, Volume 24, Issue 2, February 2026.
Abstract On 10 May 2024, a severe G5 geomagnetic storm—the most intense of solar cycle 25—significantly disturbed the global ionosphere. This study presents a comprehensive analysis using multi‐instrument observations, including ground‐based measurements from BDS‐GEO total electron content (TEC), digital ionosondes, and magnetometers; model outputs ...
Yue Sun, Jun Tang, Hanyang Teng, Chaoqian Xu, Liang Zhang   +4 more
wiley   +1 more source

Universal Constants in Self-organized Criticality Systems

The Astrophysical Journal
The occurrence frequency distributions of fluxes ( F ) and fluences or energies ( E ) observed in the majority (in 18 out of 23 cases) of astrophysical phenomena are found to be consistent with the predictions of the fractal-diffusive self-organized ...
Markus J. Aschwanden
doaj   +1 more source

Multiwave Siberian Radioheliograph

Solar-Terrestrial Physics, 2020
The article discusses characteristics, fundamental and applied tasks of the Siberian Radioheliograph that is developed at the ISTP SB RAS Radio Astrophysical Observatory and spectropolarimetric complex that measures the total flux of solar radio emission.
Altyntsev A.T., Lesovoi S.V., Globa М.V., Gubin A.V., Kochanov A.A., Grechnev V.V., Ivanov E.F., Kobets V.S., Meshalkina N.S., Muratov A.A., Prosovetsky D.V., Myshyakov I.I., Uralov A.M., Fedotova A.Yu.   +13 more
doaj   +1 more source

Energy Landscape in Iraq: Current Status, Research Review, and Policy Insights

Energy Science &Engineering, Volume 14, Issue 1, Page 625-678, January 2026.
Renewable energy currently contributes a small fraction to Iraq's electricity mix, with 3.39% from hydropower and 0.059% from solar, while thermal power dominates at 96.6%. Significant untapped potential exists across solar, wind, biomass, geothermal, wave, and blue energy, highlighting opportunities for a low‐carbon, technoeconomically viable energy ...
Ihab Jabbar Al‐Rikabi, Adil A. M. Omara, Mohamed Ali Abuelnour, Amar S. Abdul‐Zahra, Ayad M. Al Jubori, Hayder Alsaad   +5 more
wiley   +1 more source

Solar energetic particles and radio burst emission [PDF]

, 2017
We present a statistical study on the observed solar radio burst emission associated with the origin of in situ detected solar energetic particles. Several proton event catalogs in the period 1996$-$2016 are used.
Krupar, Vratislav, Miteva, Rositsa, Samwel, Susan W.   +2 more
core   +1 more source

Deep Learning‐Based Prediction of High‐Speed Solar Wind Streams: Spatio‐Temporal Dependencies in Coronal Hole Dynamics

Earth and Space Science, Volume 13, Issue 1, January 2026.
Abstract High‐speed solar wind streams (HSS), originating from coronal holes (CH), are key drivers of space weather disturbances and heliospheric dynamics. However, forecasting HSS remains challenging due to the evolving morphology of CH. In this study, we present a deep learning‐based framework that models the spatiotemporal relationship between CH ...
J. J. Abraham‐Alowonle, Amr Hamada, Moataz Abdelwahab, Kanya Kusano, Ayman Mahrous   +4 more
wiley   +1 more source

Solar-geophysical data number 496, December 1985. Part 2: (Comprehensive reports). Data for June 1985, January-May 1985 and miscellanea [PDF]

Contents include the detailed index for 1985; data for June 1985 (solar flares, solar radio bursts at fixed frequencies, solar X-ray radiation from GOES satellite graphs, mass ejections from the sun, and active prominences and filaments); data for ...
Coffey, H. E.
core   +1 more source

Interacting coronae of two T Tauri stars: first observational evidence for solar-like helmet streamers [PDF]

, 2007
Context {The young binary system V773 Tau A exhibits a persistent radio flaring activity that gradually increases from a level of a few mJy at apoastron to more than 100 mJy at periastron.
A. Boden, A. Sargent, André, Bower, D. Boboltz, de Gouveia dal Pino, E. Ros, Feigelson, Ferreira, G. Torres, G. Torricelli-Ciamponi, Gibson, Guenther, J. Neidhöfer, Jardine, K. M. Menten, M. Kaufman Bernadó, M. Massi, Massi, Massi, Massi, Melrose, Nishio, Parker, Parker, Phillips, Rydgren, Schwenn, Skinner, Suess, Tsuboi, Welty, Wiegelmann   +32 more
core   +2 more sources

Climatology of Medium‐Scale Traveling Ionospheric Disturbances Over Continental US Using GNSS TEC From 2012 to 2023

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) have long been a subject of interest in ionospheric research. However, their spatiotemporal variability across regions, local times, seasons, and solar cycles is very complicated and remains not well established.
Jing Liu, Shun‐Rong Zhang, Anthea J. Coster, Philip J. Erickson, Hanli Liu   +4 more
wiley   +1 more source

Quasi-Periodic Pulsations in Solar Flares: new clues from the Fermi Gamma-Ray Burst Monitor

, 2011
In the last four decades it has been observed that solar flares show quasi-periodic pulsations (QPPs) from the lowest, i.e. radio, to the highest, i.e. gamma-ray, part of the electromagnetic spectrum.
A. J. van der Horst, A. Rau, A. von Kienlin, Atwood, C. A. Meegan, C. Wilson-Hodge, Cenko, D. Gruber, de Luca, Deeter, E. Bissaldi, Foullon, Foullon, G. Kanbach, Gehrels, Golenetskii, Groth, Götz, Inglis, Inglis, Israel, J. Greiner, Kliem, Lachowicz, Lawrence, Li, Lin, Lomb, M. S. Briggs, Mandelbrot, Markowitz, Markwardt, Meegan, Mereghetti, Morris, Nakariakov, Nakariakov, Nakariakov, Nakariakov, Ofman, Ohno, P. Lachowicz, P. N. Bhat, Parks, Press, Press, R. D. Preece, R. Diehl, R. M. Kippen, Reznikova, Scargle, Schuster, Timmer, V. Connaughton, Vaughan, W. S. Paciesas, Zaitsev, Zimovets   +57 more
core   +1 more source