Results 71 to 80 of about 1,080,647 (142)

The propagation and damping of slow magnetoacoustic waves in the solar atmosphere [PDF]

open access: yes, 2012
The propagation and damping of slow magnetoacoustic waves in the solar atmosphere is investigated, with particular emphasis placed on waves with periodicities of five minutes. The basic model of a uniform temperature loop is extended by the addition of
Owen, Nicholas Robert
core   +2 more sources

Near‐Real‐Time Identification of the Source of Ionospheric Disturbances

open access: yesJournal of Geophysical Research: Space Physics, Volume 129, Issue 11, November 2024.
Abstract The ionosphere is characterized by a large number of disturbances generated in response to a wide range of phenomena, including natural hazards, space weather and man‐made events. Identification of the origin of ionospheric disturbances (ID), especially in real or near‐real‐time (NRT), is an extremely difficult task, and it is one of the most ...
B. Maletckii, E. Astafyeva
wiley   +1 more source

Coronal Waves and Oscillations

open access: yesLiving Reviews in Solar Physics, 2005
Wave and oscillatory activity of the solar corona is confidently observed with modern imaging and spectral instruments in the visible light, EUV, X-ray and radio bands, and interpreted in terms of magnetohydrodynamic (MHD) wave theory.
Nakariakov Valery M., Verwichte Erwin
doaj  

Global Coronal Magnetic Field Estimation Using Bayesian Inference

open access: yesThe Astrophysical Journal
Estimating the magnetic field strength in the solar corona is crucial for understanding different physical processes happening over diverse spatiotemporal scales.
Upasna Baweja   +2 more
doaj   +1 more source

Preface to the special issue on “Old records for new knowledge”

open access: yesGeoscience Data Journal, Volume 11, Issue 4, Page 357-364, October 2024.
Studying a changing world requires observations going back in time to extend and contextualize our latest scientific knowledge. Old legacy data exist in non‐digital formats. Thus, techniques and methodologies for the preservation, dissemination, interpretation, homogenization, calibration, and use of such legacy data and their associated metadata, as ...
Josep Batlló   +3 more
wiley   +1 more source

Hard X-Ray Quasiperiodic Pulsations in X-class Solar Flares Observed by Aditya-L1/HEL1OS

open access: yesThe Astrophysical Journal
We present the catalogue of quasiperiodic pulsations (QPPs) detected in hard X-ray (HXR) observations of X-class solar flares obtained with the High Energy L1 Orbiting X-ray Spectrometer (HEL1OS) instrument on board Aditya-L1 during 2024 July–2026 March.
Sachin Rajkapoor Kanaujiya   +3 more
doaj   +1 more source

Flux Rope Eruption and Associated Vertical Prominence Oscillation

open access: yesUniverse
We present a plane-of-sky observational analysis of a solar eruptive event that occurred on 2 September 2023. The flare peaked at approximately 07:00 UT, closely aligning with the impulsive acceleration phase of the erupting flux rope, which accelerated ...
Yanjie Zhang, Qingmin Zhang
doaj   +1 more source

The Lorentz Force at Work: Multiphase Magnetohydrodynamics throughout a Flare Lifespan

open access: yesThe Astrophysical Journal
The hour-long, gradual phase of solar flares is well observed across the electromagnetic spectrum, demonstrating many multiphase aspects, where cold condensations form within the heated post-flare system, but a complete 3D model is lacking. Using a state-
Wenzhi Ruan   +3 more
doaj   +1 more source

Torsional wave dispersion and dissipation in solar tornados

open access: yesAstronomy & Astrophysics
Aims. We investigated the nature of solar atmosphere tornados hosting torsional Alfvén waves and fast magnetoacoustic torsional waves in the context of energy transport and transfer. Methods.
Abdolhosseinzadeh A.   +2 more
doaj   +1 more source

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