Results 21 to 30 of about 18,012,027 (287)
Atmosphere, 2019 The upper atmosphere of Mars is constantly perturbed by small-scale gravity waves propagating from below. As gravity waves strongly affect the large-scale dynamics and thermal state, constraining their statistical characteristics is of great importance ...
David Jesch +4 more
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Solar System chaos and the Paleocene–Eocene boundary age constrained by geology and astronomy [PDF]
Science, 2019 Filling a dating hole The periodic nature of Earth's orbit around the Sun produces cycles of insolation reflected in climate records. Conversely, these climate records can be used to infer changes in the dynamics of the Solar System, which is inherently chaotic and not always similarly periodic.
Richard E. Zeebe, Lucas J. Lourens
openaire +5 more sources
Solar flux emergence : a three-dimensional numerical study [PDF]
, 2008 Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
core +2 more sources
Deciphering the Slow-rise Precursor of a Major Coronal Mass Ejection
The Astrophysical Journal Letters, 2023 Coronal mass ejections are explosive plasma phenomena prevalently occurring on the Sun and probably on other magnetically active stars. However, how their pre-eruptive configuration evolves toward the main explosion remains elusive.
X. Cheng +5 more
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Thermodynamic and magnetic evolution of an eruptive C-class solar flare observed with SST/TRIPPEL-SP
Astronomy & AstrophysicsSolar flares are complex phenomena driven by the release of magnetic energy, but a large energy reservoir is not sufficient to determine their eruptive potential; the magnetic topology and plasma dynamics play a key role.
Díaz Baso C. J. +6 more
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Cyclic sunspot activity during the first millennium CE as reconstructed from radiocarbon
Astronomy & AstrophysicsContext. Solar activity, dominated by 11-year cyclic evolution, has been observed directly since 1610 CE. Indirect cosmogenic proxy data have been used to reconstruct solar activity for millennia prior to 1610.
Usoskin I. +3 more
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Solar sailing : mission applications and engineering challenges [PDF]
, 2003 Solar sailing is emerging as a promising form of advanced spacecraft propulsion, which can enable exciting new space-science mission concepts. By exploiting the momentum transported by solar photons, solar sails can perform high-energy orbittransfer ...
McInnes, Colin R.
core +5 more sources
The 1948 solar eclipse and the genesis of radio astronomy in Victoria [PDF]
, 2004 In the early years of radio astronomy, solar eclipses played a critical role in establishing the sources of solar radio emission. During the half decade from 1945, Australia emerged as a leading nation in radio astronomy, with most of the observations ...
Orchiston, Wayne
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Planetary Astronomy-Understanding the Origin of the Solar System
, 2019 There is a vibrant and effective planetary science community in Canada. We do research in the areas of meteoritics, asteroid and trans-Neptunian object orbits and compositions, and space weather, and are involved in space probe missions to study planetary surfaces and interiors. For Canadian planetary scientists to deliver the highest scientific impact
Lawler, Samantha +11 more
openaire +4 more sources
Observations of interplanetary scintillation during the 1998 Whole Sun Month: a comparison between EISCAT, ORT and Nagoya data [PDF]
Annales Geophysicae, 2000 Observations of interplanetary scintillation (IPS) allow accurate solar wind velocity measurements to be made at all heliographic latitudes and at a range of distances from the Sun.
P. J. Moran +11 more
doaj +1 more source