Results 1 to 10 of about 337,815 (176)

Monte Carlo Models of Comet Dust Tails Observed From the Ground

open access: yesUniverse, 2022
Dust particles leaving the comet nucleus surface are entrained by the gas within the first few nuclear radius distances and are subjected to a complex hydrodynamical environment.
Fernando Moreno
exaly   +5 more sources

Conditions for the Formation of Anomalous Tail of Comet

open access: yesOpen Astronomy, 2019
The time and velocity of ejection of dust particles of anomalous tails from cometary nuclei are determined. It is revealed that some comets cause the formation of an anomalous tail is the collision of their comet nucleus with other bodies of the Solar ...
Safarov Abduljalol G.   +1 more
exaly   +2 more sources

Active Asteroid 311P/PanSTARRS: Rotational Instability as the Origin of its Multitails?

open access: yesThe Astronomical Journal, 2023
The active asteroid 311P/PanSTARRS is one of the two targets of the planned Chinese asteroid exploration mission Tianwen-2. During 2013, 311P experienced several mass-loss events and exhibited multiple comet-like tails. Here we analyze the morphology and
Bin Liu   +5 more
doaj   +1 more source

Dusty plasmas: from Saturn’s rings to semiconductor processing devices

open access: yesAdvances in Physics: X, 2021
Dusty plasmas are plasmas containing solid particles in the size range of about 10 nm—10 μm. The particles acquire an electrical charge by collecting electrons and ions from the plasma, or by photo-electron emission if they are exposed to UV radiation ...
Robert Merlino
doaj   +1 more source

Effects of monomer shape on the formation of aggregates from a power law monomer distribution

open access: yesNew Journal of Physics, 2013
The coagulation of dust aggregates is an important process in many physical systems such as the Earth's upper atmosphere, comet tails and protoplanetary discs.
J Perry   +3 more
doaj   +1 more source

Characterization of the Dust and Sodium Tails of Comet C/2020 F3 (NEOWISE) from Parker Solar Probe and Amateur Observations

open access: yesThe Planetary Science Journal
Comet C/2020 F3 (NEOWISE) reached perihelion on 2020 July 3 at 0.29 au and exhibited a highly structured dust tail. Using a simplified Finson–Probstein model, structures such as striae, observed in the tail in images obtained by the Parker Solar Probe ...
Qasim Afghan   +4 more
doaj   +1 more source

NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

open access: yesThe Astrophysical Journal Letters
We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS) with the NSF-DOE Vera C. Rubin Observatory.
Colin Orion Chandler   +305 more
doaj   +1 more source

A Large Outburst, Coma Asymmetries, and the Color of Comet 243P/NEAT

open access: yesThe Planetary Science Journal
Water ice is a fundamental building material of comets and other bodies in the outer solar system. Yet the properties of cometary water ice are challenging to study, due to its volatility and the typical distances at which comets are observed.
Michael S. P. Kelley   +18 more
doaj   +1 more source

A Disintegrating Rocky Planet with Prominent Comet-like Tails around a Bright Star

open access: yesThe Astrophysical Journal Letters
We report the discovery of BD+05 4868 Ab, a transiting exoplanet orbiting a bright ( V = 10.16) K-dwarf (TIC 466376085) with a period of 1.27 days.
Marc Hon   +23 more
doaj   +1 more source

Delayed Methane Detection in 3I/ATLAS: Galactic Cosmic Ray–Driven Subsurface Stratification and Interstellar Exposure Age Constraints

open access: yesThe Astrophysical Journal
Interstellar comet 3I/ATLAS shows unusual volatile activity, including strong H _2 O, CO, and CO _2 production and a delayed postperihelion detection of CH _4 .
Akshat Rawat, Kinsuk Acharyya
doaj   +1 more source

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