Results 21 to 30 of about 9,980 (290)

Over seven decades of solar microwave data obtained with Toyokawa and Nobeyama Radio Polarimeters

Geoscience Data Journal, 2023
Monitoring observations of solar microwave fluxes and their polarization began in Japan during the 1950s at Toyokawa and Mitaka. At present (April 2022), monitoring observations continues with the Nobeyama Radio Polarimeters (NoRP) at the Nobeyama campus
Masumi Shimojo, Kazumasa Iwai
doaj   +1 more source

Density Fluctuations in the Lower Thermosphere of Mars Retrieved From the ExoMars Trace Gas Orbiter (TGO) Aerobraking

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, Alexander S. Medvedev, Francesco Castellini, Erdal Yiğit, Paul Hartogh   +4 more
doaj   +1 more source

Geomagnetic storms driven by ICME- and CIR-dominated solar wind. [PDF]

, 2006
The interaction of the solar wind and the Earth's magnetosphere is complex and the phenomenology of the interaction is very different for solar wind dominated by interplanetary coronal mass ejections (ICMEs) compared to solar wind dominated by corotating
Liemohn, M. W., Zhang, J. C., Skoug, R. M., McPherron, R. L., Denton, M. H., Borovsky, Joseph E., Denton, Michael H., Henderson, M. G., Lavraud, B., Borovsky, J. E., Thomsen, M. F.   +10 more
core   +1 more source

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

New periodic orbits in the solar sail three-body problem [PDF]

, 2011
We identify displaced periodic orbits in the circular restricted three-body problem, wher the third (small) body is a solar sail. In particular, we consider solar sail orbits in the earth-sun system which are high above the exliptic plane.
Biggs, J.D., BIGGS, JAMES DOUGLAS, Mcinnes, C., T. Waters, Waters, T., J. D. Biggs, Biggs, J. D., C. McInnes, McInnes, C.R.   +8 more
core   +1 more source

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, C. Xing, G. Aulanier, S. K. Solanki, H. Peter, M. D. Ding   +5 more
doaj   +1 more source

Thermodynamic and magnetic evolution of an eruptive C-class solar flare observed with SST/TRIPPEL-SP

Astronomy & Astrophysics
Solar 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., de la Cruz Rodríguez J., Doerr H.-P., van Noort M., Prasad A., Feller A., Kiselman D.   +6 more
doaj   +1 more source

Cyclic sunspot activity during the first millennium CE as reconstructed from radiocarbon

Astronomy & Astrophysics
Context. 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., Solanki S. K., Krivova N. A., Chatzistergos T.   +3 more
doaj   +1 more source

Passive sorting of asteroid material using solar radiation pressure [PDF]

, 2013
Understanding dust dynamics in asteroid environments is key for future science missions to asteroids and, in the long-term, also for asteroid exploitation.
Sanchez Cuartielles, Joan-Pau, Garcia Yarnoz, Daniel, Sánchez Cuartielles, J.P., McInnes, Colin, García Yárnoz, D., McInnes, C.R.   +5 more
core   +1 more source

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, P. J. Moran, P. J. Moran, S. Ananthakrishnan, V. Balasubramanian, A. R. Breen, A. Canals, R. A. Fallows, P. Janardhan, P. Janardhan, M. Tokumaru, P. J. S. Williams   +11 more
doaj   +1 more source