Results 21 to 30 of about 2,512 (186)
The Astrophysical Journal, 2023 The cosmic dust particles found in space are mainly porous aggregates of smaller grains. Theoretically, these aggregates are replicated using fractal geometry, assuming a cluster of spheres.
Prithish Halder, Sujan Sengupta
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Morphology of Cometary Dust Coma and Tail [PDF]
International Astronomical Union Colloquium, 1996 AbstractThis paper summarizes some recent progress in our understanding of the morphological diversity of dust comets. This diversity is a product of dust emission from discrete active areas on the nucleus surface and provides information on the comet's rotation state and source function.
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CONSTRAINTS ON THE INTRACLUSTER DUST EMISSION IN THE COMA CLUSTER OF GALAXIES [PDF]
The Astrophysical Journal, 2009 We have undertaken a search for the infrared emission from the intracluster dust in the Coma cluster of galaxies by the Multiband Imaging Photometer for Spitzer. Our observations yield the deepest mid and far-infrared images of a galaxy cluster ever achieved.
Kitayama, T. +9 more
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Ice, Ice, Maybe? Investigating 46P/Wirtanen’s Inner Coma for Icy Grains
The Planetary Science Journal, 2023 The release of volatiles from comets is usually from direct sublimation of ices on the nucleus, but for very or hyperactive comets other sources have to be considered to account for the total production rates.
Theodore Kareta +3 more
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Dust–dust collisions in cometary comas: applications to comet 67P/Churyumov–Gerasimenko
Monthly Notices of the Royal Astronomical SocietyABSTRACT Silica has emerged as a crucial component within inner comet comas. This work investigates silica dust aggregates and their interactions within cometary comas. We study the probability that aggregates in the size range 1–100 µm collide with each other in the coma and analyse the outcomes of such collisions by using the ...
María Belén Planes +4 more
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The Astronomical JournalComets, relics from the early solar system, consist of dust and ice. The ice sublimates as comets approach the Sun, ejecting dust from their nuclei seen as activity.
Yuna G. Kwon +6 more
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PLANTS, PEOPLE, PLANET, EarlyView.The preservation and revitalization of mycocultural heritage, developed over centuries of human‐mushroom interaction, contributes to safeguarding both natural ecosystems and the promotion of sustainable rural development, one of the biggest global challenges currently faced by humankind.
Elisette Ramírez‐Carbajal +8 more
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Noble gases and nitrogen in material from asteroid Bennu
Meteoritics &Planetary Science, EarlyView.Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty +7 more
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Comprehensive Physiology, Volume 16, Issue 2, April 2026.Vagus nerve stimulation (VNS) effects span central and peripheral organ systems through diverse mechanistic pathways. This comprehensive review provides a unified synthesis of these mechanisms across neurological, cardiovascular, immunological, metabolic, and gastrointestinal domains, filling a critical gap and serving as a foundational resource for ...
Yifeng Bu +11 more
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Modeling Ice and Dust in Comet C/2017 K2 (Pan-STARRS)’s Coma
The Planetary Science JournalC/2017 K2 (Pan-STARRS) is a long-period comet that has been active since 24 au inbound and likely as far out as 35 au, far beyond where the sublimation of water ice can power cometary activity.
Megan Firgard, Theodore Kareta
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