Results 31 to 40 of about 993 (136)
Search of candidates for active asteroids among the NEA
Научные труды Института астрономии РАН, 2023 В Институте астрономии РАН с 2010 г. проводятся наблюдения околоземных объектов, получен большой архив фотометрических данных. С целью определения критериев выявления объектов для архивного поиска кометной активности у астероидов рассмотрены распределения по элементам обит и физическим характеристикам известных активных астероидов (АА).
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Biomimetic robots driven by smart materials: Motion forms, stimulation methods and applications
Responsive Materials, EarlyView.Biomimetic robots enhance adaptability by mimicking biological systems, but rigid materials limit performance. Smart materials with stimuli responsiveness and shape adaptability enable more flexible actuation and improved environmental interaction.
Zeyu Yang +8 more
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Large‐Scale Applications of Plasma Technologies: Progresses and Challenges
High Voltage, EarlyView.ABSTRACT Plasma technologies convert electrical power into energetic electrons, ions, reactive species, radiation and heat, thereby breaking through the bottleneck of purely thermal or chemical routes and bringing impressive changes to our world. This roadmap reviews the progress and challenges of plasma technologies from a large‐scale and application ...
Pankaj Attri +51 more
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Computer Graphics Forum, EarlyView.Abstract Recent advances in AI enable the automatic generation of visualizations directly from textual prompts using agentic workflows. However, visualizations produced via one‐shot generative methods often suffer from insufficient quality, typically requiring a human in the loop to refine the outputs.
Roxana Bujack +4 more
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One‐more‐vertex Next‐Event Estimation with Hierarchical Geometry Sampling
Computer Graphics Forum, EarlyView.Abstract Robust next‐event estimation (NEE) remains a challenge in scenes characterized by sparse or small‐scale geometry where indirect illumination is the primary transport mechanism. In these scenes, traditional path construction, which relies on local directional sampling, often fails to find intersections with the sparse geometry, and standard NEE
Jorge Garcia‐Pueyo +3 more
wiley +1 more source
Gaia search for early-formed andesitic asteroidal crusts
Astronomy & Astrophysics, 2023 Context. Andesitic meteorites are among the oldest achondrites known to date. They record volcanic events and crust formation episodes in primordial planetesimals that took place about 4.565 Myr ago. However, no analogue for these meteorites has been found in the asteroid population to date. Aims.
Galinier, M. +4 more
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Meteoritics &Planetary Science, EarlyView.Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford +35 more
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An optimal Earth Trojan asteroid search strategy [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2012 Abstract Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. They are important solar-system fossils because they carry information on early Solar system formation, when collisions between bodies were more frequent.
Todd, Michael +3 more
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Xenoliths in meteorites: Insights into the dynamics of material exchange between asteroids
Meteoritics &Planetary Science, EarlyView.Abstract A minor fraction of meteorites contains xenoliths, that is, clasts that were formed on a different parent body than that of the host lithology. The occurrence of xenoliths is direct evidence for the exchange of material between asteroids, including exchanges between asteroids from the carbonaceous (CC) and non‐carbonaceous (NC) reservoirs ...
J. Gattacceca +17 more
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Meteoritics &Planetary Science, EarlyView.Abstract This study investigates the spatial distribution and spectral characteristics of the broad hydration feature near 3 μm across the surface of asteroid (101955) Bennu using OVIRS (OSIRIS‐REx Visible and InfraRed Spectrometer) data. We analyzed multiple global OVIRS data sets obtained at different times throughout the Bennu day, revealing ...
Hannah H. Kaplan +5 more
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