Results 111 to 120 of about 12,722 (205)

Spatial frequencies associated with the latitudinal structures of ionospheric currents seen by CHAMP satellite

, 2015
The CHAMP magnetic field variations during international quiet days of low solar activity period 2008-2009 are investigated. The present paper reports the existence of frequency-peaks < 20 mHz in the compressional component of the magnetic field in ...
Sinha, A. K., Thomas, Neethal, Vichare, Geeta   +2 more
core   +1 more source

Research on geomagnetic secular variation of China and surrounding areas based on the Geomagnetic Virtual Observatories

Earth and Planetary Physics
The Low Earth Orbit (LEO) geomagnetic satellites provide a large number of high-precision measurements, which are crucial for researching the Secular Variation (SV) of the geomagnetic field.
Jiang Li, Bin Chen
doaj   +1 more source

Thermal Modeling in Support of the Edison Demonstration of Smallsat Networks Project [PDF]

NASA's Edison program is intending to launch a swarm of at least 8 small satellites in 2013. This swarm of 1.5U Cubesats, the Edison Demonstration of Smallsat Networks (EDSN) project, will demonstrate intra-swarm communications and multi-point in-situ ...
Coker, Robert F.
core   +1 more source

Secular dynamics of planetesimals in tight binary systems: Application to Gamma-Cephei

, 2011
The secular dynamics of small planetesimals in tight binary systems play a fundamental role in establishing the possibility of accretional collisions in such extreme cases.
A. M. Leiva, Beaugé, Beaugé, Beaugé, Beaugé, C. A. Giuppone, C. Beaugé, Campbell, Carpino, Correa Otto, Duquennoy, Fragner, Giuppone, Gontcharov, Griffin, Haghighipour, Hatzes, Henrard, Heppenheimer, Hori, J. Correa-Otto, Kaula, Kley, Knezeviíc, Marzari, Marzari, Marzari, Mayor, Michtchenko, Michtchenko, Michtchenko, Neishtadt, Nelson, Neuhäuser, Paardekooper, Paardekooper, Terquem, Thébault, Thébault, Thébault, Torres, Tsukamoto, Verrier, Walker, Xie, Xie, Xie, Zsom, Ćuk   +48 more
core   +1 more source

Orbit evolution, maintenance and disposal of SpaceChip swarms [PDF]

, 2010
The combined effect of solar radiation pressure and atmospheric drag is investigated for future mission conceptsfor swarms of satellites-on-a-chip (SpaceChips). The natural evolution of the swarm is exploited to perform spatially distributed measurements
Colombo, C., Lucking, Charlotte, McInnes, C.R.   +2 more
core  

Predicting Dual‐Satellite Ionospheric Radial Currents From Single‐Satellite Observations With a BiLSTM Model

Space Weather
Ionospheric radial currents (IRC) can be derived using two methodologies: (a) the single‐satellite approach: Single‐IRC is deduced from magnetic field data of a single satellite (Swarm‐A); (b) the dual‐satellite approach: Dual‐IRC is calculated by ...
Hao Xia, Hui Wang, Kedeng Zhang, Ming Wang   +3 more
doaj   +1 more source

Orbit design for future SpaceChip swarm missions [PDF]

, 2010
The effect of solar radiation pressure and atmospheric drag on the orbital dynamics of satellites-on-a-chip (SpaceChips) is exploited to design long-lived orbits about the Earth.
Colombo, C., McInnes, C.R.
core  

Satellite and ground-based observations of Pc1 pulsations during a magnetic storm in March 2023

Solar-Terrestrial Physics
We have analyzed electromagnetic ion-cyclotron oscillations of the Pc1 range (~1 Hz) recorded during the recovery phase of the March 25, 2023 magnetic storm at the network of ground stations in the Far East and at low-orbit SWARM satellites passing over ...
Pozdnyakova Daria, Pilipenko Vyacheslav, Nose Masahito, Khomutov Sergey, Baishev Dmitry   +4 more
doaj   +1 more source

Total Root Electron Content: A New Metric for the Ionosphere Below Low Earth Orbiting Satellites

Geophysical Research Letters
Powerful lightning strikes generate broadband electromagnetic signals. At Extremely Low Frequencies (ELF), the signal partly leaks into the ionosphere and produces whistlers that can be detected by satellites. Indeed, the satellites of the European Space
M. Jenner, P. Coïsson, G. Hulot, D. Buresova, V. Truhlik, L. Chauvet   +5 more
doaj   +1 more source

The role of geomagnetic observatory data during the Swarm mission [PDF]

, 2013
The scientific use of Swarm data and Swarm-derived products is greatly enhanced through combination with observatory data and indices. The strength of observatory data is that they are very stable over long periods of time with great care being taken ...
Hamilton, Brian, Macmillan, Susan, Ridley, Victoria   +2 more
core   +1 more source