Results 11 to 20 of about 327,954 (318)

Solar Sailing: applications and technology advancement [PDF]

open access: yes, 2011
Harnessing the power of the Sun to propel a spacecraft may appear somewhat ambitious and the observation that light exerts a force contradicts everyday experiences.
Macdonald, Malcolm, Malcolm Macdonald
core   +1 more source

PV system sizing using observed time series of solar radiation [PDF]

open access: yes, 2006
Sizing represents an important part of photovoltaic system design. This paper describes a sizing procedure based on the observed time series of solar radiation. Using a simple geometrical construction, the sizing curve is determined as a superposition of
Markvart, T., Ross, J.N., Fragaki, A.
core   +1 more source

STFC - Roadmap for Solar System Research 2022 [PDF]

open access: yes, 2022
This is a report to the Science Technology and Facilities Council (STFC) UK by their Solar System Advisory Panel (SSAP) on the status and direction of UK research in the field of solar system ...
Bridges, John   +7 more
core  

Predictions of the geomagnetic secular variation based on the ensemble sequential assimilation of geomagnetic field models by dynamo simulations

open access: yesEarth, Planets and Space, 2020
The IGRF offers an important incentive for testing algorithms predicting the Earth’s magnetic field changes, known as secular variation (SV), in a 5-year range. Here, we present a SV candidate model for the 13th IGRF that stems from a sequential ensemble
Sabrina Sanchez   +2 more
doaj   +1 more source

Small-scale impulsive extreme-UV emission enhancements along network loops

open access: yesAstronomy & Astrophysics
Context. Network loops are a common feature in the quiet Sun. The physical processes sustaining their energy budget are still discussed. Aims. We relied on a multi-instrumental (Solar Orbiter/EUI, Solar Orbiter/PHI, and IRIS) observation of a six-hour ...
Dolliou A.   +6 more
doaj   +1 more source

Formation and dynamics of a solar eruptive flux tube

open access: yesNature Communications, 2018
Solar eruptions are large explosions occurring in the solar atmosphere. Here, the authors perform magnetohydrodynamic simulations to unveil the dynamics of a solar eruption, and find that these are dominated by nonlinear processes involving flux tube ...
Satoshi Inoue   +3 more
doaj   +1 more source

A simple stochastic model for dipole moment fluctuations in numerical dynamo simulations

open access: yesFrontiers in Earth Science, 2016
Earth's axial dipole field changes in a complex fashion on many differenttime scales ranging from less than a year to tens of million years.Documenting, analysing, and replicating this intricate signalis a challenge for data acquisition, theoretical ...
Domenico G. eMeduri, Johannes eWicht
doaj   +1 more source

Author's Reply to Comment by Greaves et al. on “Phosphine in the Venusian Atmosphere: A Strict Upper Limit From SOFIA GREAT Observations”

open access: yesGeophysical Research Letters, 2023
In an attempt to understand the findings presented in the Comment by Greaves et al. (2023, https://doi.org/10.1029/2023GL103539), we followed their data analysis methodology, omitting the hot and cold‐load calibrations that are an important part of the ...
M. A. Cordiner   +15 more
doaj   +1 more source

Full-disc Ca ii K observations—A window to past solar magnetism

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Full-disc observations of the Sun in the Ca ii K  line provide one of the longest collections of solar data. First such observations were made in 1892 and since then various sites around the world have carried out regular observations, with Kodaikanal ...
Theodosios Chatzistergos   +2 more
doaj   +1 more source

Heat Transfer Analysis and Modeling for a Coaxial Solar Collector in a Domestic Cogeneration System

open access: yes, 2011
The need for an efficient energy system in domestic houses push the research toward innovative cogeneration system, which can meets the needs for electricity, heating and cooling power.
Alberto Bertaso   +5 more
core   +1 more source

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