Results 61 to 70 of about 260,299 (222)

Auroral and Non‐Auroral H3+ Ion Winds at Uranus With Keck‐NIRSPEC and IRTF‐iSHELL

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract To date, no investigation has documented ionospheric flows at Uranus. Previous investigations of Jupiter and Saturn have demonstrated that mapping ion winds can be used to understand ionospheric currents and how these connect to magnetosphere‐ionosphere coupling.
Emma M. Thomas, Tom S. Stallard, Henrik Melin, Mohammad N. Chowdhury, Luke Moore, James O’Donoghue, Rosie E. Johnson, Ruoyan Wang, Katie L. Knowles, Paola I. Tiranti, Neil Dello Russo, Ron J. Vervack Jr., Hideyo Kawakita   +12 more
wiley   +1 more source

The Speed of Interplanetary Shocks Through the Magnetosheath: A Toy Model

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Before interacting with the magnetosphere, an interplanetary shock travels through the magnetosheath where its speed and shape are modified. Previous studies have reported widely different answers to the question of the speed of an interplanetary shock in the magnetosheath. Observational studies generally answer this question “macroscopically”,
C. Moissard, C. Butcher, E. Ruler, J. Richardson, B. Michotte de Welle, W. Steward, M. Pritchard, D. Gonzalez Del Valle, V. Defayet, A. Bernal, V. Cavicchi, V. David   +11 more
wiley   +1 more source

Solar Energetic Particle Events with Short and Long Onset Times

The Astrophysical Journal, 2023
Gradual solar energetic particle (SEP) events, usually attributed to shock waves driven by coronal mass ejections (CMEs), show a wide variety of temporal behaviors. For example, TO, the >10 MeV proton onset time with respect to the launch of the CME, has
Kosuke Kihara, Ayumi Asai, Seiji Yashiro, Nariaki V. Nitta   +3 more
doaj   +1 more source

The Eddy Flux Transport of the Magnetohydrodynamic Quasi‐Geostrophic Disturbances

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract The classic Eliassen‐Palm (E‐P) flux in the geophysical fluid dynamics is a vector to qualify the eddy momentum and heat flux transport by Rossby waves in the latitude‐height plane. In this investigation, we derive two magnetic E‐P fluxes to quantify the eddy energy transport by magnetic Rossby waves by using magnetohydrodynamic quasi ...
Chengkang Li, Yaokun Li
wiley   +1 more source

The Need for a Sub‐L1 Space Weather Research Mission: Current Knowledge Gaps on Coronal Mass Ejections

Space Weather
Over the past decades, missions at the L1 point have been providing solar wind and interplanetary magnetic field measurements that are necessary for forecasting space weather at Earth with high accuracy and a lead time of a few tens of minutes. Improving
Noé Lugaz, Nada Al‐Haddad, Bin Zhuang, Christian Möstl, Emma E. Davies, Charles J. Farrugia, Sahanaj Aktar Banu, Eva Weiler, Antoinette B. Galvin   +8 more
doaj   +1 more source

Giant Adrenal Neuroblastoma in Adults: Surgical Management and Comprehensive Review

Clinical Case Reports, Volume 13, Issue 4, April 2025.
ABSTRACT Neuroblastoma (NB) is a rare solid tumor of the sympathetic nervous system, primarily occurring in children and rarely in adults. Its extracranial origin stems from the medullary region of the adrenal gland or sympathetic ganglia. We report an 18‐year‐old female who presented with a 6‐month history of abdominal swelling and tenderness. Imaging
Charles John Nhungo, Doreen Gerion Gilbert, Boniface Nzowa, Philipo Felix, Nimwindael Msangi, Theoflo Mmbando, Gabriel Mtaturu, Obadia Nyongole, Charles A. Mkony   +8 more
wiley   +1 more source

Direct Observations of a Shock Traversing Preceding Two Coronal Mass Ejections: Insights from Solar Orbiter, Wind, and STEREO Observations

The Astrophysical Journal Letters
The three successive coronal mass ejections (CMEs) that erupted from 2023 November 27–28, provide the first opportunity to shed light on the entire process of a shock propagating through, sequentially compressing, and modifying two preceding CMEs using ...
Yutian Chi, Chenglong Shen, Zhiyong Zhang, Mengjiao Xu, Dongwei Mao, Junyan Liu, Can Wang, Bingkun Yu, Jingyu Luo, Zhihui Zhong, Yuming Wang   +10 more
doaj   +1 more source

Characterizing Coronal Mass Ejections in Solar Cycle Analysis [PDF]

arXiv, 2018
The Sun is the major source of heat and light in our solar system. The solar cycle is the 11-year cycle of solar activity that can be determined by the rise and fall in the numbers and surface area of sunspots. Solar activity is associated with several factors including radio flux, solar irradiance, magnetic field, solar flares, coronal mass ejections,
arxiv  

Optimizing CT Scan Parameters for Dry Archaeological Bones: A Qualitative Study as a First Step Towards Standardizing CT Acquisition Protocols

International Journal of Osteoarchaeology, Volume 35, Issue 2, March/April 2025.
ABSTRACT Even though the use of CT scan examinations is often required in paleopathology, the method for performing a CT scan on archaeological dry bones has received little attention. Eight different CT acquisition parameters and positions on the CT table were evaluated using five healthy tibiae (including three immature bones), four healthy vertebrae
Antoine Martin‐Champetier, Philippe Petit, Alexia Dabadie, Marin Lasorak, Kathia Chaumoitre, Michel Panuel, Yann Ardagna   +6 more
wiley   +1 more source

Automatic Identification of Past Radiation Belts Electron Enhancement Events Using a Ground‐Based Parameter

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract We propose a new method for automatically identifying radiation belt electron enhancement events using Ca, a ground‐based 1D surrogate index for the global dynamics of the electron radiation belts. Our method improves event identification by accurately determining start and end dates, considering intensification and return‐to‐equilibrium ...
Guillerme Bernoux, Gautier Nguyen, Angélica Sicard, Vincent Maget   +3 more
wiley   +1 more source