Short‐Term Variability of Jupiter's Satellite Footprints as Spotted by JWST
Abstract We present the main Alfvén wing (MAW) spots of Io and Europa as observed by the Near‐Infrared Spectrograph onboard the James Webb Space Telescope. These auroral footprint features have been measured previously, but only in emission. Here, the derived ionospheric H3+ ${\mathrm{H}}_{3}^{+}$ emission, temperature and column density are reported ...
Katie L. Knowles +10 more
wiley +1 more source
A young progenitor for the most common planetary systems in the Galaxy. [PDF]
Livingston JH +41 more
europepmc +1 more source
Fully Kinetic Simulations of Ion‐Acoustic Waves in Asymmetric Reconnection With Cold Ions
Abstract In collisionless plasma, ion‐acoustic wave (IAW) is an important candidate for enhancing resistivity and viscosity, yet their presence and role in magnetic reconnection remain poorly understood. Here, we employ 2.5‐D particle‐in‐cell simulations to investigate IAWs in asymmetric magnetopause reconnection involving a cold ion population ...
Liangjin Song +9 more
wiley +1 more source
Strong long-term variability in active galactic nuclei affects virial black hole mass measurements. [PDF]
Amrutha N +7 more
europepmc +1 more source
Abstract The Ross Ice Shelf (RIS) in West Antarctica experienced extensive surface melting in January 2016, driven by warm humid air transported from over the Southern Ocean. Few studies have reported increased atmospheric water vapor and turbulent mixing during this event in this region, where the availability of surface measurements is challenging ...
Dhiman R. Mondal +3 more
wiley +1 more source
A universal brown dwarf desert formed between planets and stars. [PDF]
Cui K +12 more
europepmc +1 more source
Surface Air Enrichment of Cosmogenic 35S at a Subtropical Site During the May 2024 Solar Superstorm
Abstract Cosmogenic radiosulfur (35S) is produced in the atmosphere by high‐energy particle interactions and serves as a sensitive tracer of stratospheric intrusions. In May 2024, an extreme solar storm provided a rare opportunity to examine atmospheric 35S responses to intense solar activity.
Xinling Zou +4 more
wiley +1 more source
Overview of the ESCAPE Dark Matter Test Science Project for astronomers. [PDF]
Pearson J +3 more
europepmc +1 more source
Numerical Parameter‐Space Studies of Various Types of Thundercloud Gamma‐Ray Emissions
Abstract Until recently, mainly two types of hard radiation were observed in thunderstorms: intensive, short‐lived terrestrial gamma‐ray flashes (TGFs) and weak, long‐lasting gamma‐ray glows (GRGs). The Airborne Lightning Observatory for Fly's Eye GLM Simulator and TGFs (ALOFT, GLM: Geostationary Lightning Mapper) flight campaign revealed additional ...
Ø. Færder +6 more
wiley +1 more source
The faintest, extremely variable X-ray tidal disruption event from a supermassive black hole binary? [PDF]
Huang M +32 more
europepmc +1 more source

