Results 91 to 100 of about 26,872 (287)

Prospects of Using Tidal Tomography to Constrain Ganymede's Interior

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Juice (JUpiter ICy moons Explorer) 3GM Radio Science Experiment will map the gravitational field of Ganymede with unprecedented accuracy and measure tidally‐induced variations. These measurements will allow the characterization of its putative ocean and may resolve lateral variations in internal structure.
M. Rovira‐Navarro, I. Matsuyama, D. Dirkx, A. Berne, D. Calliess, S. Fayolle   +5 more
wiley   +1 more source

Laser Terminals on CubeSats: Developments for Telecommunications and Quantum Links

International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 133-146, May/June 2025.
ABSTRACT Satellite‐based laser communication is an emerging technology that is finding its way from research to industry. Compared to radio frequency (RF) systems, it has a more efficient size, weight, and power budget and, furthermore, is license free.
Christian Roubal, Till Dolejsky, Benjamin Rödiger, Fabian Rein, Jorge Rosano Nonay, René Rüddenklau, Christos Papadopoulos, Christopher Schmidt, Florian Moll   +8 more
wiley   +1 more source

The Radio Wave Polarization of Saturn Lightning Observed by Cassini

Journal of Geophysical Research: Space Physics, Volume 130, Issue 6, June 2025.
Abstract We investigate the polarization of the radio waves emitted by lightning in Saturn's atmosphere, which are referred to as SEDs for Saturn Electrostatic Discharges. Using the complete SED data set retrieved by Cassini's RPWS (Radio and Plasma Wave Science) instrument we found that the circular polarization of SEDs below a frequency of 2 MHz ...
G. Fischer, M. Imai, U. Taubenschuss, D. Píša, W. S. Kurth   +4 more
wiley   +1 more source

A Discrete Set of Possible Transit Ephemerides for Two Long-period Gas Giants Orbiting HIP 41378 [PDF]

Astronomical Journal, 2018
In 2015, K2 observations of the bright (V = 8.9, K = 7.7) star HIP 41378 revealed a rich system of at least five transiting exoplanets, ranging in size from super-Earths to gas giants.
J. Becker, A. Vanderburg, Joseph E. Rodriguez, M. Omohundro, F. Adams, K. Stassun, X. Yao, J. Hartman, J. Pepper, G. Bakos, G. Barentsen, T. Beatty, W. Bhatti, A. Chontos, A. Cameron, C. Hellier, D. Huber, D. James, R. Kuhn, M. Lund, D. Pollacco, R. Siverd, D. Stevens, J. V. M. Cardoso, R. West   +24 more
semanticscholar   +1 more source

Empirical Reconstruction of Pre‐1995 Extreme Storms Using ML‐Derived Solar Wind Inputs

Space Weather, Volume 23, Issue 6, June 2025.
Abstract The storm‐time geomagnetic field and electric currents are reconstructed for extreme storms before 1995: the July 1982 superstorm and the March 1989 Hydro‐Québec grid collapse event. The reconstructions are based on an improved magnetic field data mining method utilizing recently published machine learning‐derived solar wind data.
G. K. Stephens, M. I. Sitnov, N. A. Tsyganenko, R. S. Weigel   +3 more
wiley   +1 more source

Variation of Model‐Predicted Reconnection Voltages Applied to Uranus' Dayside Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 130, Issue 6, June 2025.
Abstract Uranus provides a key missing piece for fundamentally understanding solar wind‐magnetospheric interactions due to its location in the outer solar system. Whether the viscous‐like interaction overtakes global magnetic reconnection as the dominant process at the magnetopause of the outer planets remains unresolved.
S. Zomerdijk‐Russell, J. M. Jasinski, A. Masters   +2 more
wiley   +1 more source

An Ionospheric Disturbed Index Based on ROTI

Space Weather, Volume 23, Issue 6, June 2025.
Abstract The ionosphere has significant impacts on wireless communication, satellite navigation, and space weather. Based on hundreds of global GNSS observation stations, we calculate the rate of TEC index (ROTI). Through the analysis of ROTI, we establish a global ionospheric disturbed index (IDI) to directly characterize ionospheric disturbances ...
Cheng Wang, Xiaoxue Min, Hong Hu
wiley   +1 more source

Transit timing variations and linear ephemerides of confirmed Kepler transiting exoplanets [PDF]

Research in Astronomy and Astrophysics, 2018
We determine new linear ephemerides of transiting exoplanets using long-cadence de-trended data from quarters Q1 to Q17 of the Kepler mission. We analysed transit-timing variation (TTV) diagrams of 2098 extrasolar planets.
Pavol Gajdoš, M. Vavnko, vStefan Parimucha   +2 more
semanticscholar   +1 more source

Cross‐Scale Interactions Between ULF Waves, VLF Waves, and Electrons

Geophysical Research Letters, Volume 52, Issue 10, 28 May 2025.
Abstract Wave‐particle interactions are essential for energy transport in the magnetosphere. In this study, we investigated an event during which electrons interact simultaneously with waves in different scales, using data from the Magnetospheric Multiscale mission.
Xing‐Yu Li, Qiu‐Gang Zong, Shan Wang, Xu‐Zhi Zhou, Chao Yue, Li Li, Zhi‐Yang Liu, Yong‐Fu Wang, Ze‐Fan Yin, Yi‐Xin Sun, Yi‐Xin Hao, Craig Pollock, Christopher T. Russell, Robert E. Ergun, Per‐Arne Lindqvist   +14 more
wiley   +1 more source

Precision Ephemerides for Gravitational-wave Searches – III. Revised system parameters of Sco X-1 [PDF]

Monthly notices of the Royal Astronomical Society, 2018
Neutron stars in low-mass X-ray binaries are considered promising candidate sources of continuous gravitational-waves. These neutron stars are typically rotating many hundreds of times a second.
Lian-tao Wang, D. Steeghs, D. Steeghs, D. Galloway, T. Marsh, J. Casares, J. Casares   +6 more
semanticscholar   +1 more source