Results 51 to 60 of about 18,971,872 (256)

Investigation of Stray‐Light Patterns in the eROSITA X‐Ray Cameras

Astronomische Nachrichten, EarlyView.
ABSTRACT eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the soft X‐ray instrument aboard the Spectrum‐Roentgen‐Gamma (SRG) mission, developed under the responsibility of the Max Planck Institute for Extraterrestrial Physics (MPE).
Veronika Stieglitz, Peter Friedrich, Susanne Friedrich, Konrad Dennerl, Michael Freyberg   +4 more
wiley   +1 more source

Degenerate Interpretations of O3 Spectral Features in Exoplanet Atmosphere Observations Due to Stellar UV Uncertainties: A 3D Case Study with TRAPPIST-1 e

The Astrophysical Journal, 2023
TRAPPIST-1 e is a potentially habitable terrestrial exoplanet orbiting an ultracool M dwarf star and is a key target for observations with the James Webb Space Telescope.
G. J. Cooke, D. R. Marsh, C. Walsh, A. Youngblood   +3 more
doaj   +1 more source

Influence of Dynamical Friction on the Unstable Manifolds of Lagrange Points in Barred Galaxies

Astronomische Nachrichten, EarlyView.
ABSTRACT Some time ago the idea has been proposed that rings and spirals in barred galaxies are shaped by the unstable manifolds of the Lagrange points sitting near the ends of the bar. The topic of the present article is an investigation of whether the numerical support for this suggestion can be improved by the inclusion of dynamical friction into ...
Christof Jung
wiley   +1 more source

A Construction of the Real Time Monitoring System of the Solar Radio Disturbance: II. 2.8GHz Radio Receiver and Radio Environment [PDF]

Journal of Astronomy and Space Sciences, 2008
As the second step of the real time monitoring system of the solar radio disturbance, we constructed a 2.8 GHz radio receiver with 500 MHz bandwith.
Yonggi Kim, Sara Park, Dae-Young Lee, Joh-Na Yoon   +3 more
doaj   +1 more source

KiDS Survey for solar system objects mining

, 2018
VizieR online Data Catalogue associated with article published in journal Astronomy & Astrophysics with title 'Mining the Kilo-Degree Survey for solar system objects.' (bibcode: 2018A&A...610A ...
Université Côte d’Azur, Leiden University, Carry, Altieri, McFarland, Daniel, Bouy, Bertin, Verdoes Kleijn, Gijsbert, European Space Astronomy Centre (ESA/ESAC), Institut D'Astrophysique de Paris, CNRS UMR 7095 and UPMC, Kuijken, De Jong, Université Paris Sciences et Lettres, Laboratoire d'Astrophysique de Bordeaux, Univ. Bordeaux, CNRS, Valentijn, E; id_orcid, Mahlke, Astronomy, Centro de Astrobiologia (INTA-CSIC), ESAC   +17 more
core   +1 more source

Solar sail orbits at the Earth-Moon libration points [PDF]

, 2009
Solar sail technology offers new capabilities for the analysis and design of space missions. This new concept promises to be useful in overcoming the challenges of moving throughout the solar system.
Simo, Jules, McInnes, Colin R.
core   +3 more sources

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

Variation of crater morphological parameters in the landing area of Tianwen-1: relationships with the geological environment and climate change

Earth, Planets and Space
The Zhurong rover of the Tianwen-1 mission successfully landed in the southern part of the Utopian Planitia and the northern region of the dichotomy boundary.
Yu Yang, Yi Wang, Bo Li, Zongcheng Ling, Yang Liu, Shaojie Qu, Shengbo Chen   +6 more
doaj   +1 more source

Coupling Selective Organic Oxidation With Hydrogen Evolution Over Metal Halide Perovskite Photocatalysts: Halide‐Dependent Design, Mechanisms, and Stability Challenges

EcoEnergy, EarlyView.
This Review highlights how metal halide perovskites enable coupled selective organic oxidation and hydrogen evolution under visible light. It summarizes halide‐dependent design principles, surface engineering strategies, reaction mechanisms, and stability challenges, providing guidance for developing efficient and durable photocatalytic systems ...
Jutarat Jitrada, Lizhen Liu, Patchanita Thamyongkit, Yanfa Yan, Jun Huang   +4 more
wiley   +1 more source

Polycarbazole–NiOOH Interfacial Engineering of BiVO4 Photoanodes for Efficient and Stable Solar Water Splitting

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A π‐conjugated carbazole (p‐CBZ) layer is electro‐polymerized on BiVO4 to form a p–n heterojunction that enhances charge separation and suppresses surface recombination, while a NiOOH co‐catalyst accelerates oxygen evolution kinetics. The synergistic BVO/p‐CBZ/NiOOH photoanode delivers a high photocurrent density and long‐term stability for efficient ...
Lakshman Sundar Arumugam, Ana Gutierrez‐Blanco, Agustin O. Alvarez, Alejandro Saura Aviles, Mahesh Eledath‐Changarath, Rafael Abargues, Juan Francisco Sánchez‐Royo, Helena Rabelo, Maria Chiara Spadaro, Jordi Arbiol, Javier E. Durantini, Sixto Giménez   +11 more
wiley   +1 more source