Results 71 to 80 of about 50,929 (190)
Dispersion relation for dust charge fluctuations of multi-ion dusty plasma [PDF]
AIP AdvancesIn this paper, we show that dust particles embedded in plasmas may show charge variations in response to fluctuations in the oscillatory currents of the plasma species.
A. A. Abid +8 more
doaj +1 more source
Planet Migration in Protoplanetary Disks with Rims
The Astrophysical JournalComplex structures, including sharp edges, rings, and gaps, have been commonly observed in protoplanetary disks with or without planetary candidates. Here we consider the possibility that they are the intrinsic consequences of angular momentum transfer ...
Zhuoya Cao +3 more
doaj +1 more source
Water Transport from Enceladus to the Rings
The Planetary Science JournalEnceladus continuously ejects approximately 300 kg s ^−1 of water vapor from its south polar regions, forming an extensive neutral gas torus around Saturn.
Ian-Lin Lai +4 more
doaj +1 more source
AerospaceAutomated recognition of celestial bodies from observational imagery is a cornerstone of autonomous space exploration. However, deploying deep learning models in space environments entails rigorous requirements not only for accuracy but also for ...
Ziqiang Xu +6 more
doaj +1 more source
The Astrophysical Journal LettersWe report on the discovery of a very prominent mid-infrared (18–25 μ m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the Mid-Infrared Instrument of the James Webb Space Telescope, along with previous ...
Csaba Kiss +20 more
doaj +1 more source
Assessing the Role of Large Fullerenes as Potential Carriers of Infrared Emission Plateaus
The Astrophysical JournalWe investigate large fullerenes containing between 90 and 1750 carbon atoms and with radii ranging from 4.4 to 12.9 Å, and compare their computed emission spectra to Spitzer data for the fullerene-rich planetary nebulae SMP SMC 24 and SMP LMC 48 to ...
A. Ricca, E. Peeters, J. Cami
doaj +1 more source
GalaxiesI demonstrate the usage of planetary nebulae (PNe) to infer that a pair of jets shaped the ejecta of the core-collapse supernova (CCSN) SN 1987A. The main structure of the SN 1987A inner ejecta, the ‘keyhole’, comprises two low-intensity zones.
Noam Soker
doaj +1 more source
Spectral Trends across the Rings and Inner Moons of Uranus and Neptune from JWST NIRCam Images
The Planetary Science JournalJWST NIRCam images provide low-resolution spectra of the rings and inner moons orbiting Uranus and Neptune. These data reveal systematic variations in spectral parameters like the strength of the strong OH absorption band around 3 μ m and the spectral ...
M. M. Hedman +10 more
doaj +1 more source
The Planetary Science JournalThe interior composition and structure of Uranus are ambiguous. It is unclear whether Uranus is composed of fully differentiated layers dominated by an icy mantle or has smooth compositional gradients.
Zifan Lin +2 more
doaj +1 more source
Constraints on Quaoar’s Rings and Atmosphere from JWST/NIRCam Observations of a Stellar Occultation
The Planetary Science JournalObservations of stellar occultations have revealed that small bodies are capable of hosting ring systems. The trans-Neptunian object Quaoar is the host of an enigmatic ring system, with two rings located well outside the Roche limit. To better understand
Benjamin Proudfoot +5 more
doaj +1 more source