Results 51 to 60 of about 22,198 (215)

Asteroid characterization using Gaia Data Release 3

Astronomy & Astrophysics
Context. We study the taxonomic classification of asteroids observed by Gaia as a continuation of the lightcurve inversion work presented in Paper I. Aims.
Pentikäinen Hanna, MacLennan Eric M., Penttilä Antti, Muinonen Karri, Oszkiewicz Dagmara A., Cellino Alberto, Tanga Paolo, Wang Xiaobin, Siltala Lauri   +8 more
doaj   +1 more source

Advances in research on autophagy in the maintenance of insect–microbe symbiosis

New Plant Protection, EarlyView.
Autophagy plays a dual regulatory role in insect–microbe symbiotic relationships. Beneficial symbiotic bacteria in insects participate in nutrient exchange via the TOR pathway, whereas pathogenic microbes induce immune defense through the AMPK pathway. Autophagy‐related genes regulate development and pathogen clearance during this process.
Yanbin Wang, Yuqiong Hao, Ke Chen, Hongbin Zhang, Xiansheng Xie, Feirong Ren   +5 more
wiley   +1 more source

ASTEROIDS EXPLORATION WITH BALDONE SCHMIDT TELE-SCOPE

Odessa Astronomical Publications, 2018
CCD observations of asteroids were ob-tained in 2008 with the Baldone Schmidt telescope (aper-ture/diameter/focal length = 80/120/240 cm) at the Bal-done Astrophysical observatory (code 069) of the Institute of Astronomy of the University of Latvia.
I. Eglitis
doaj   +1 more source

The Stripping Method for X‐Ray Spectral Correction in ISO 4037‐1 Narrow Spectra Series (N10‐N150)

X-Ray Spectrometry, EarlyView.
ABSTRACT Spectrometry is an important tool for the characterization of X‐ray beams in ionizing radiation metrology. However, the use of solid‐state spectrometers for accurate measurements requires correction of spectral distortions caused by the interaction between photons and the detector.
Matheus Rebello do Nascimento, Josilene Cerqueria Santos, Eric Matos Macedo, Leonardo de Castro Pacífico, Luís Alexandre Gonçalves Magalhães   +4 more
wiley   +1 more source

The Distribution of Highly Red-sloped Asteroids in the Middle and Outer Main Belt

The Planetary Science Journal
Red ( S > 10%/0.1 μ m) spectral slopes are common among Centaurs and trans-Neptunian objects (TNOs) in the outer solar system. Interior to and co-orbital with Jupiter, the red ( S ∼ 10%/0.1 μ m) slopes of D-type main-belt and Jupiter Trojan asteroids are
Oriel A. Humes, Cristina A. Thomas, Lauren E. McGraw   +2 more
doaj   +1 more source

Opportunities for asteroid retrieval missions [PDF]

, 2013
Asteroids and comets are of strategic importance for science in an effort to uncover the formation, evolution and composition of the Solar System. Near-Earth Objects (NEOs) are of particular interest because of their accessibility from Earth, but also ...
Daniel García Yárnoz, Sanchez Cuartielles, Joan-Pau, Colin R. McInnes, Garcia Yarnoz, Daniel, McInnes, Colin, Yárnoz, Daniel García, Joan-Pau Sanchez, McInnes, Colin R.   +7 more
core   +1 more source

The Truth, the Whole Truth, and Nothing but the Truth: Automatic Visualization Evaluation from Reconstruction Quality

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, Li‐Ta Lo, Ethan Stam, Ayan Biswas, David Rogers   +4 more
wiley   +1 more source

Evidence for Random Walk Transport of Small Asteroids from the Main Belt to the Inner Solar System

The Planetary Science Journal
The transport of some main-belt asteroids to the inner solar system depends on Yarkovsky radiation forces changing the orbits of those asteroids. However, these forces depend on the rotational states of the asteroids, and YORP radiation forces act to ...
Stanley F. Dermott, Apostolos A. Christou, Dan Li   +2 more
doaj   +1 more source

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, Nestor Monzon, Adrian Jarabo, Adolfo Muñoz   +3 more
wiley   +1 more source

Dynamic 3D Simulation of Surface Charging on Rotating Asteroids

The Astrophysical Journal
The surface-charging phenomenon of asteroids, mainly resulting from solar wind plasma and solar radiation, has been extensively studied. However, the influence of the asteroid’s rotation on surface charging is not yet fully understood.
Ronghui Quan, Zhiying Song, Zhigui Liu
doaj   +1 more source