Review
Astronomy & Astrophysics
Valeria Mangano, Melinda Dosa, Markus Franz, Anna Milillo, Joana S. Oliveira, Yeon Joo Lee, Susan McKenna-Lawlor, Davide Grassi, Daniel Heyner, Alexander S. Kozyrev, Roberto Peron, Joern Helbert, Sebastien Besse, Sara de la Fuente, Elsa Montagnon, Joe Zender, Martin Volwerk, Jean-Yves Chaufray, James A. Slavin, Harald Krueger, Alessandro Maturilli, Thomas Cornet, Kazumasa Iwai, Yoshizumi Miyoshi, Marco Lucente, Stefano Massetti, Carl A. Schmidt, Chuanfei Dong, Francesco Quarati, Takayuki Hirai, Ali Varsani, Denis Belyaev, Jun Zhong, Emilia K. J. Kilpua, Bernard V. Jackson, Dusan Odstrcil, Ferdinand Plaschke, Rami Vainio, Riku Jarvinen, Stavro Lambrov Ivanovski, Akos Madar, Geza Erdos, Christina Plainaki, Tommaso Alberti, Sae Aizawa, Johannes Benkhoff, Go Murakami, Eric Quemerais, Harald Hiesinger, Igor G. Mitrofanov, Luciano Iess, Francesco Santoli, Stefano Orsini, Herbert Lichtenegger, Gunther Laky, Stas Barabash, Richard Moissl, Juhani Huovelin, Yasumasa Kasaba, Yoshifumi Saito, Masanori Kobayashi, Wolfgang Baumjohann
Summary: BepiColombo is a dual spacecraft mission conducted jointly by the European Space Agency and the Japanese Aerospace Exploration Agency to explore the planet Mercury. It will involve multiple planetary flybys and use a variety of instruments for research, aiming to explore the different environments of Mercury.
SPACE SCIENCE REVIEWS
(2021)
Article
Astronomy & Astrophysics
Georgios Nicolaou, George Livadiotis, David J. McComas
Summary: We analyze proton bulk parameters derived from Ulysses observations and investigate the polytropic behavior of solar wind protons. The large-scale variations of the proton density and temperature indicate subadiabatic processes. The polytropic index does not depend on solar wind speed and varies slightly over the range of heliocentric distances and latitudes explored by Ulysses.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Anastasia Marchuk, Charles W. Smith, Abigale S. Watson, Matthew R. Argall, Colin J. Joyce, Philip A. Isenberg, Bernard J. Vasquez, Nathan A. Schwadron, Maciej Bzowski, Marzena A. Kubiak, Neil Murphy
Summary: By surveying magnetic field data from the Ulysses spacecraft, magnetic waves excited by newborn pickup He+ were identified, with interstellar neutrals being the likely source for the pickup ions. The waves are seen throughout the Ulysses orbit when growth rates are comparable to or exceed the turbulence rates.
ASTROPHYSICAL JOURNAL
(2021)
Article
Multidisciplinary Sciences
Robert R. Herrick, Scott Hensley
Summary: By analyzing the images taken by the Magellan spacecraft, researchers have found evidence of ongoing volcanic activity on Venus. A volcanic vent on the planet's surface changed shape within an 8-month period, indicating active volcanism. These findings suggest that Venus, despite its geologically young surface, may still possess ongoing volcanic activity.
Article
Astronomy & Astrophysics
Alex J. Meyer, Daniel J. Scheeres
Summary: The evolution of binary asteroid dynamics is not fully understood, with planetary encounters potentially affecting their dynamic evolution. Models and numerical analyses can be used to study the effects of planetary flybys on binary asteroid systems.
Article
Materials Science, Ceramics
M. Anas, Anil Jain, Mukul Gupta, Archna Sagdeo, S. M. Yusuf, T. Maitra, V. K. Malik
Summary: The magnetic and structural properties of LaVO3 were investigated using various techniques including X-ray and neutron powder diffraction, thermogravimetric analysis, X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, electrical transport, and dc magnetization. The presence of a novel phase was indicated by the larger lattice parameters. The valence state of vanadium ions was found to be +3, and the effect of larger lattice parameters was observed in the X-ray absorption spectroscopy measurement. The magnetic transition from antiferromagnetic ordering to a monoclinic crystal structure was observed below 142 K (TN) and 140 K (Tt), respectively.
CERAMICS INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
S. Aryal, Q. Gan, J. S. Evans, F. I. Laskar, D. K. Karan, X. Cai, K. R. Greer, W. Wang, W. E. McClintock, R. W. Eastes
Summary: The 2022 Tongan volcanic eruption released significant energy into the atmosphere, generating pressure waves that traveled globally. Satellite images showed wave signatures across multiple atmospheric layers. This paper presents an analysis of the eruption-induced temperature perturbations in the middle thermosphere.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Michael r. Needham, David a. Randalla
Summary: In this study, a large group of climate model simulations from 1850 to 2014 were analyzed, and it was found that historical pollution changed the way heat was transported from the tropics to Earth's poles. This change in heat transport was also observed when analyzing an atmospheric reanalysis, which combines many meteorological observations into a best estimate of the past climate state. The reflection of sunlight from polluted clouds cooled the Northern Hemisphere, leading to more heat transport out of the tropics. However, pollution emitted from China and India in recent decades did not result in a change in Earth's heat transport due to counteracting changes in snow and ice in the Northern Hemisphere.
JOURNAL OF CLIMATE
(2023)
Article
Mathematics, Applied
J. Jake Nichol, Matthew G. Peterson, Kara J. Peterson, G. Matthew Fricke, Melanie E. Moses
Summary: In September 2020, Arctic sea ice extent reached the second-lowest on record, highlighting a significant issue of underestimation in climate prediction models. Research indicates that the current E3SM model relies too heavily on certain climatological quantities and does not adequately consider observed data.
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2021)
Article
Engineering, Aerospace
Hermann Kaptui Sipowa, Jay McMahon
Summary: A novel geometric guidance algorithm is proposed for spacecraft formation flying, where the controllability of the full relative motion is analyzed and the optimal path is obtained by solving a partial differential equation.
JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Di Zhou, Huan-Huan Guo, Mao-Sen Fu, Xiao-Gang Yao, Hui-Xing Lin, Wen-Feng Liu, Li-Xia Pang, Charanjeet Singh, Sergei Trukhanov, Alex Trukhanov, Ian M. Reaney
Summary: La(Nb0.9V0.1)O-4 undergoes a ferroelastic phase transition from monoclinic fergusonite to tetragonal scheelite at 350 degrees C, accompanied by spontaneous strain and a sudden change in thermal expansion coefficient. An anomalous decrease in relative permittivity at the phase transition is predicted, which may contribute to the design of novel microwave dielectric composites.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Optics
Yang Li, Lei-Ming Zhou, Nan Zhao
Summary: Laguerre-Gaussian (LG) beams trapping particles can cause the particles to rotate around the beam axis, with their rotation direction potentially opposite to the beam's orbital angular momentum when strongly focused. The negative torque exerted by the focused beam on the particle is a key factor leading to this counter-intuitive effect.
Article
Astronomy & Astrophysics
Shuai Fu, Xiaoping Zhang, Lingling Zhao, Ming Wang, Wensai Shang, Pengwei Luo
Summary: Observations show a sustained decline in solar activity since the 1980s, with the recent P-24/25 cycle reaching a hundred-year low. The study also reveals significant variations in ACR intensity between different solar cycles, suggesting a possible correlation with the heliospheric current sheet.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Energy & Fuels
Huayu Gao, Zheng Wei, Xiang Zhang, Pei Wang, Yuwei Lei, Hui Fu, Daming Zhou
Summary: This paper proposes a novel three-level orbital launch approach based on a combination of a traditional two-level orbital launch method and an electromagnetic boost. The approach improves the energy efficiency and reusability of the spacecraft, reduces fuel weight, and optimizes the launch system using an adaptive quantum-inspired optimization algorithm.
Article
Multidisciplinary Sciences
Elizabeth Buechler, Siobhan Powell, Tao Sun, Nicolas Astier, Chad Zanocco, Jose Bolorinos, June Flora, Hilary Boudet, Ram Rajagopal
Summary: Understanding the changes in electricity consumption during the COVID-19 pandemic provides insights into society's response to shocks and extreme events. This study quantifies the changes in electricity consumption in 58 different countries/regions and examines their relationship with government restrictions, health outcomes, GDP, mobility metrics, and electricity sector characteristics. The results show that stricter government restrictions and larger decreases in mobility, particularly in the retail and recreation sectors, are closely related to decreases in electricity consumption, but these relationships are strongest during the initial phase of the pandemic. There are also indications that decreases in electricity consumption are related to pre-pandemic sensitivity to holidays, suggesting further avenues for research.
