Results 211 to 220 of about 18,971,872 (256)
Current Sheet Geometry and Heavy Ion Influence on Reconnection
Abstract In some planetary magnetospheres singly ionized heavy ion species can be found in addition to the typical hydrogen. The presence of these ions can affect many magnetospheric processes. The role heavy ions, specifically oxygen, and the thickness of the current sheet play in magnetic reconnection is investigated using particle‐in‐cell ...
Cristian R. Radulescu +6 more
wiley +1 more source
Accurate determination of chemical abundances near a supermassive black hole. [PDF]
XRISM Collaboration.
europepmc +1 more source
Earthward O+ Injections in the Plasma Sheet Boundary Layer During Geomagnetic Storms
Abstract During geomagnetic storms, energetic ions are injected from the Earth's magnetotail along the plasma sheet boundary layer (PSBL). Owing to its off‐equatorial inclined orbit, the Arase satellite is in a prime position to observe these injections in the PSBL on the nightside at the apogee.
M. M. H. Kalliokoski +9 more
wiley +1 more source
The abundances of carbon and nitrogen in the atmospheres of classical Be stars. [PDF]
Peters GJ +4 more
europepmc +1 more source
Abstract This article analyzes a weak geomagnetic storm on January 17–18, 2013, using a first‐principles model (Global Ionosphere Thermosphere Model (GITM) with an empirical assimilative ionospheric model (TIDAS), evaluated against observations in the form of Millstone Hill (MH) incoherent scatter radar (ISR) altitude profiles and global navigation ...
Onyinye Nwankwo‐Omoloja +3 more
wiley +1 more source
Features of Ground Level Enhancement (GLE #74) Event on 11 May 2024
Abstract Ground Level Enhancement (GLE #74) occurred on 11 May 2024 following an X5.8 solar flare from active region AR 13668 and the associated halo coronal mass ejection. The event was observed by both ground‐based neutron monitors (NMs) and space‐borne instruments and occurred during a deep Forbush decrease and one of the strongest geomagnetic ...
Alexander Mishev +5 more
wiley +1 more source
Abstract Ultra‐low frequency (ULF) waves with frequencies 10–140 s are a characteristic feature of the foreshock, playing important roles in transient formation, shock reformation, and particle acceleration. We utilize 23 years of Cluster data to map ULF wave power and compressibility in the vicinity of Earth's bow shock, combining Cluster data with ...
R. L. Atkinson +4 more
wiley +1 more source
Europa's Neutral Sodium Exosphere Is Quasi‐Stable Over Decades
Abstract Europa's sodium cloud is thought to be modified by its orbital longitude and by its plasma environment, which modulates with Jovian magnetic geometry. To explore and quantify sodium cloud variability, seven sets of Keck I/HIRES measurements are compared providing comprehensive coverage of orbital and magnetic geometry.
Emma L. Lovett +4 more
wiley +1 more source
Structure and Dynamics in the Magnetotails of Unmagnetized and Weakly Magnetized Bodies. [PDF]
Stergiopoulou K +13 more
europepmc +1 more source

