Results 61 to 70 of about 606 (259)

The Flare Irradiance Spectral Model‐Version 2 (FISM2)

Space Weather, 2020
The Flare Irradiance Spectral Model (FISM) is an important tool for estimating solar variability for a myriad of space weather research studies and applications, and FISM Version 2 (FISM2) recently was released.
P. C. Chamberlin, F. G. Eparvier, V. Knoer, H. Leise, A. Pankratz, M. Snow, B. Templeman, E. M. B. Thiemann, D. L. Woodraska, T. N. Woods   +9 more
doaj   +1 more source

Statistical Analysis of Multiple Bow Shock Crossings at Mars

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We conduct a statistical analysis of multiple bow shock (BS) crossings at Mars. Data from the magnetometer (MAG) and Solar Wind Ion Analyzer (SWIA) onboard the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft from its first 2 years in orbit is used to identify flapping events.
Niklas J. T. Edberg, David J. Andrews, Long Cheng, Konstantin Kim, Katerina Stergiopoulou, Mark Lester, Cyril Simon Wedlund, Jasper S. Halekas, Shannon M. Curry   +8 more
wiley   +1 more source

Temperatures of Jupiter’s Upper Atmosphere: The Role of the Planetary Magnetic Field

The Astrophysical Journal Letters
The primary source of heating in the upper atmospheres (thermospheres) of giant planets has been the subject of long debate. The conundrum (or “energy crisis”) consists in observed thermosphere temperatures at low and midlatitudes exceeding values ...
Ingo C. F. Müller-Wodarg, Peio Iñurrigarro, Luke Moore, Tommi T. Koskinen, Alexander S. Medvedev   +4 more
doaj   +1 more source

Properties of Ion Upflows in the Low‐Altitude Polar Ionosphere During CIR‐ and CME‐ Driven Magnetic Storms Based on Long‐Term EISCAT Observations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract We have investigated the effects of Corotating Interaction Region‐ (CIR‐) and Coronal Mass Ejection‐ (CME‐) driven magnetic storms on the characteristics and mechanisms of ion upflow in the low‐altitude ionosphere (250–350 km). Our analysis was based on observations from the European Incoherent Scatter (EISCAT) radars at Tromsø (ILAT = ∼66 ...
M. Takada, K. Seki, Y. Ogawa, K. Keika
wiley   +1 more source

Modeling Regional Electric Field Using EISCAT3D Observations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract EISCAT3D, which is in its final stage of construction, will be the next generation incoherent scatter radar (ISR) system to provide the full ion velocity vector across hundreds of kms in vertical and horizontal directions. This presents a tremendous opportunity to study the three‐dimensional nature of ionospheric electrodynamics.
Habtamu W. Tesfaw, Heikki Vanhamäki, Ilkka Virtanen, Spencer Hatch, Matt Zettergren, Karl Laundal   +5 more
wiley   +1 more source

A Direct Simulation Monte Carlo–Driven Photochemical Model of Callisto’s Ionosphere

The Planetary Science Journal
Here we present a photochemical model of Callisto’s ionosphere with inputs supplied by a direct simulation Monte Carlo model of its neutral atmosphere. We compare a model that considers interactions with photons as the sole external ionization mechanism ...
Shane R. Carberry Mogan, Luke E. Moore, Lucas Liuzzo, Andrew R. Poppe   +3 more
doaj   +1 more source

State-to-state dissociative photoionization of molecular nitrogen: the full story

Advances in Physics: X, 2020
N2 is a major constituent of Earth and planetary atmospheres. First, evidenced in 1952, the dissociative photoionization of molecular nitrogen, N2, plays an important role in the species abundance, out of equilibrium evolution, and chemical reactivity of
T. Ayari, M. Desouter-Lecomte, R. Linguerri, G. A. Garcia, L. Nahon, A. Ben Houria, H. Ghalila, R. Ben Said, M. Hochlaf   +8 more
doaj   +1 more source

Characteristics of Large‐Scale Traveling Ionospheric Disturbances During the 10 May 2024 Geomagnetic Storm

Space Weather, Volume 23, Issue 10, October 2025.
Abstract Based on the total electron content (TEC) observation in the Asian‐Australian and American sectors, this paper investigates the characteristics and hemispheric asymmetry of large‐scale traveling ionospheric disturbances (LSTIDs) during the 10 May 2024 superstorm. We found that the amplitudes and meridional phase velocities of LSTIDs in the two
Tingwei Han, Huijun Le, Yuyan Yang, Wenbo Li, Wenjie Sun, Han Ma, Yijia Zhou, Bowei Liu, Rongjin Du, Libo Liu, Yiding Chen, Ruilong Zhang   +11 more
wiley   +1 more source

Quasi‐Constant Time Gap in Multiple Rings of Elves

Earth and Space Science, Volume 12, Issue 10, October 2025.
Abstract We present evidence that the time delay between the multiple rings of elves is not caused by the ground reflection of the electromagnetic pulse produced by intracloud lightning. To investigate temporal differences of multi‐elves, we analyzed data from four storms occurring at various times and distances from the Pierre Auger Observatory in ...
The Pierre Auger Collaboration
wiley   +1 more source

Advancing CO2++ Modeling in the Martian Dayside Ionosphere: Insights from Natural Lifetime Analysis

The Astrophysical Journal
The molecular dication CO _2 ^++ has, as previously reported, been detected in the Martian ionosphere by the Neutral Gas and Ion Mass Spectrometer on the Mars Atmosphere and Volatile Evolution (MAVEN) mission.
Long Cheng, Erik Vigren, Moa Persson, Hao Gu, Jun Cui   +4 more
doaj   +1 more source