Results 11 to 19 of about 19 (19)

Seasonal and Local Time Variation in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars

open access: yesJournal of Geophysical Research: Atmospheres, Volume 129, Issue 21, 16 November 2024.
Abstract Meteoroids of sub‐milligram sizes burn up high in the Earth's atmosphere and cause streaks of plasma trails detectable by meteor radars. The altitude at which these trails, or meteors, form depends on a number of factors including atmospheric density and the astronomical source populations from which these meteoroids originate.
E. C. M. Dawkins   +26 more
wiley   +1 more source

Waves and Instabilities in Saturn's Magnetosheath: 2. Dispersion Relation Analysis

open access: yesJournal of Geophysical Research: Space Physics, Volume 129, Issue 10, October 2024.
Abstract The WHAMP (Rönnmark, 1982, https://inis.iaea.org/search/search.aspx?orig_q=RN:14744092) and LEOPARD (Astfalk & Jenko, 2017, https://doi.org/10.1002/2016ja023522) dispersion relation solvers were used to evaluate the growth rate and scale size for mirror mode (MM) and ion cyclotron (IC) instabilities under plasma conditions resembling Saturn's ...
I. Cheng   +4 more
wiley   +1 more source

Atmospheric collection of extraterrestrial dust at the Earth's surface in the mid‐Pacific

open access: yesMeteoritics &Planetary Science, Volume 59, Issue 10, Page 2789-2817, October 2024.
Abstract The Kwajalein micrometeorite collection utilized high volume air samplers fitted with polycarbonate membrane filters to capture particles directly from the atmosphere at the Earth's surface. This initial study focused on identifying cosmic spherule‐like particles, conservatively categorizing them into four groups based on bulk compositional ...
Penelope J. Wozniakiewicz   +8 more
wiley   +1 more source

Explaining the Evolution of Ion Velocity Distributions at a Low Activity Comet

open access: yesJournal of Geophysical Research: Space Physics, Volume 129, Issue 9, September 2024.
Abstract At a low activity comet the plasma is distributed in an asymmetric way. The hybrid simulation code Amitis is used to look at the spatial evolution of ion velocity distribution functions (VDFs), from the upstream solar wind (SW) to within the comet magnetosphere where the SW is heavily mass‐loaded by the cometary plasma.
A. Moeslinger   +4 more
wiley   +1 more source

Not So Fast: A New Catalog of Meteor Persistent Trains

open access: yesJournal of Geophysical Research: Space Physics, Volume 129, Issue 7, July 2024.
Abstract This paper presents the results of a nearly 2‐year long campaign to detect and analyze meteor persistent trains (PTs)—self‐emitting phenomena which can linger up to an hour after their parent meteor. The modern understanding of PTs has been primarily developed from the Leonid storms at the turn of the century; our goal was to assess the ...
L. E. Cordonnier   +4 more
wiley   +1 more source

Commonsense morality and contact with value

open access: yesPhilosophy and Phenomenological Research, Volume 109, Issue 1, Page 410-430, July 2024.
Abstract There seem to be many kinds of moral duties. We should keep our promises; we should pay our debts of gratitude; we should compensate those we've wronged; we should avoid doing or intending harm; we should help those in need. These constitute, some worry, an unconnected heap of duties: the realm of commonsense morality is a disorganized mess ...
Adam Lovett, Stefan Riedener
wiley   +1 more source

Pioneer Venus Orbiter Observations of Solar Wind Driven Magnetosonic Waves Interacting With the Dayside Venusian Ionosphere

open access: yesGeophysical Research Letters, Volume 51, Issue 12, 28 June 2024.
Abstract We use in situ plasma observations made by the Pioneer Venus Orbiter spacecraft to show for the first time that magnetosonic waves can couple the solar wind to the upper ionosphere and deposit energy there. The waves are generated upstream of Venus, are advected into the shock and propagate across the draped magnetic field, through the ...
C. M. Fowler   +5 more
wiley   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

open access: yes
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

open access: yes
Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source

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