Results 61 to 70 of about 18,012,027 (287)

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

Research Progress of Three‐Terminal Perovskite/Silicon Tandem Solar Cells Based on Back‐Contact Silicon

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Perovskite/silicon tandem solar cells offer efficiencies beyond 30%, yet conventional architectures face trade‐offs between optical performance and current matching. Three‐terminal tandems employing silicon back‐contact bottom cells eliminate the current‐matching constraint while minimizing optical losses, offering superior energy yield under real ...
Yunhao Fan, Sheng Ma, Huanpei Huang, Zhengping Li, Wenzhong Shen   +4 more
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

QUESTIONS AND PROSPECTS OF TEACHING THE TOPIC "SOLAR SYSTEM" IN THE TEXTBOOK "ASTRONOMY"

Izvestiya of the Samara Science Centre of the Russian Academy of Sciences. Social, Humanitarian, Medicobiological Sciences, 2022
The article deals with the issues of teaching the topic "Solar system" of the discipline "Astronomy". The old textbook "Astronomy" by E.P. Levina and new - B.A. Vorontsova–Velyaminova, E.K. Strout and V.M. Charugin - in which the material about the planetary system is borrowed from publications of the last century.
openaire   +1 more source

A Multi‐Software Approach to Assessing Photovoltaics Integration in Modern Enovoltaic Systems

Energy Science &Engineering, EarlyView.
Robust eno‐PV design methodology applied to a real case study Multi‐software 3D model developed to optimize PV panels‐vineyard configuration Energy yield nearly independent of tracker height, but reduced by wider row spacing Grape productivity improving with height and decreasing with spacing Energy generation and grape yield balanced by tuning PV ...
Erika Stracqualursi, Gianfranco Di Lorenzo, Rodolfo Araneo, Francesco Grimaccia   +3 more
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

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Orbital and Absolute Magnitude Distribution of Jupiter Trojans

The Astronomical Journal
Jupiter Trojans (JTs) librate about the Lagrangian stationary centers L4 and L5 associated with this planet on typically small-eccentricity and moderate-inclination heliocentric orbits.
David Vokrouhlický, David Nesvorný, Miroslav Brož, William F. Bottke, Rogerio Deienno, Carson D. Fuls, Frank C. Shelly   +6 more
doaj   +1 more source

Laboratory Studies of Grains from outside the Solar System: A New Kind of Astronomy [PDF]

Science Progress, 1999
Several phases whose origins predate that of the solar system have been identified in primitive meteorites during the past dozen years. The properties and the observed isotopic structures of these grains provide a variety of information, not obtainable in this detail by other means, on several highly interesting subjects: (a) details of the nuclear ...
openaire   +2 more sources