Results 41 to 50 of about 871 (133)

High Latitude Thermosphere and Ionosphere Density Response to the May 2024 Geomagnetic Storm Observed by the LLITED CubeSat Mission

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The May 2024 G5 geomagnetic storm produced significant disturbances in the ionosphere and thermosphere, particularly at high latitudes. Using high‐resolution in situ ion and neutral density measurements from the NASA Low‐Latitude Ionosphere/Thermosphere Enhancements in Density (LLITED) CubeSat at 430 km altitude, this study documents notable ...
Diana J. Swanson, James H. Clemmons, Huixin Liu, Rebecca Bishop, Shantanab Debchoudhury, Aroh Barjatya, Asti Bhatt   +6 more
wiley   +1 more source

Magnetic Reconnection Ion Outflows Observed at the Dayside Magnetopause: Observation‐Model Comparison and Influence of Solar Wind Structures

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Magnetic reconnection is a fundamental process in magnetized plasmas that accelerates charged particles at the expense of magnetic energy. This study examines 122 dayside magnetopause crossing events characterized by accelerated ion plasma flows consistent with magnetic reconnection.
D. S. F. Medeiros, V. M. Souza, C. Wang, L. E. A. Vieira, W. Gonzalez, H. Li, Z. Liu   +6 more
wiley   +1 more source

Statistical Study of Geoeffective Fe XV 28.4 nm Emission Bursts and Their Influence on Ionospheric Total Electron Content During the Late Phase of Solar Flares

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Recent studies have demonstrated that warm coronal emissions during the extreme ultraviolet late phase (ELP) of X‐class solar flares can be sufficiently strong to also affect electron density in the Earth's ionosphere. The Fe XV 28.4 nm line was identified as one of the most geoeffective emissions produced during the ELP.
S. Z. Bekker, A. N. O’Hare, H. J. Greatorex, L. A. Hayes, N. Janitzek, G. S. Kerr, R. O. Milligan, L. Qian, K. Watanabe   +8 more
wiley   +1 more source

Development and Cancellation of Long‐Duration Positive Ionospheric Storms: Both Changes of the F2‐Layer Peak Height and O/N2 Ratio Can Be Decisive

Space Weather, Volume 24, Issue 7, July 2026.
Abstract For decades, two competing hypotheses on the key drivers of mid‐latitude long‐duration positive ionospheric storms (LDPS) have been considered: (a) an increase of the F2‐layer peak height (hmF2) and (b) an increase in the atomic oxygen to molecular nitrogen density ratio (O/N2).
D. V. Kotov, M. O. Reznychenko, P. G. Richards, O. V. Bogomaz, L. P. Goncharenko, L. J. Paxton, M. Hernández‐Pajares, A. I. Reznychenko, D. P. Shkonda, V. V. Barabash, L. Ya. Emelyanov, I. F. Domnin, A. Ye. Miroshnikov, V. P. Burmaka, D. A. Dzyubanov, Yu. I. Podyachiy   +15 more
wiley   +1 more source

The Impact of the May 2024 Geomagnetic Storm on TRISAT Orbital Decay: A TLE‐Based Analysis With a Lifetime Forecast

Space Weather, Volume 24, Issue 7, July 2026.
Abstract The 10–13 May 2024 geomagnetic storm was one of the strongest space‐weather events of Solar Cycle 25 and produced a major expansion of the thermosphere, substantially increasing atmospheric drag on low‐Earth‐orbit spacecraft. In this study, we quantify the storm‐time orbital response of TRISAT, Slovenia's first 3U CubeSat, using publicly ...
N. Kosanič, I. Kramberger
wiley   +1 more source

Plasma Stability in Turbulent Magnetic Flux Ropes Downstream of a Collisionless Shock

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract How pre‐existing solar wind turbulence, and coherent structures such as magnetic flux ropes within it, influence the transition of plasma across a shock is still poorly understood. Recently, in situ observations from the Earth's magnetosheath have been used to study plasma stability against ion kinetic instabilities. In the turbulent flow, the
L. Vuorinen, D. Burgess, F. Koller, D. Trotta   +3 more
wiley   +1 more source

Multimodal Soft Surgical Robots Enabled by Eco‐Degradable, Sterilizable Polymers and Transient Electronics

Advanced Functional Materials, Volume 36, Issue 51, 25 June 2026.
A compostable PGS soft surgical robot with interchangeable modules integrates transient Mo tactile and Si thermal sensors for dual feedback. The device preserves its function after clinical‐grade sterilization, demonstrates stable actuation and cardiac tissue grasping with real‐time in vivo pulsatile monitoring, and biodegrades post‐use with soil‐safe, 
Minseong Chae, Kyung‐Sub Kim, Gyeong‐Seok Hwang, Jun‐Seok Shim, Sung‐Woo Kim, Yong‐Wu Kim, Jieun Han, Jae‐Young Bae, Jae‐Hwan Lee, Minjung Chae, Jooik Jeon, Joo‐Hyeon Park, You‐Jung Park, Ju‐Yong Lee, Sung‐Geun Choi, Min‐Ha Oh, Yong‐Joong Shin, Young‐In Ryu, Ji‐Woo Gu, Seong‐Yu Choi, Jeong‐Yun Sun, Jung Keun Hyun, Myoung‐Ryul Ok, Sang Yup Kim, Edyta Wyszkowska, Ju‐Young Kim, Kang‐Sik Lee, Seung‐Kyun Kang   +27 more
wiley   +1 more source

Height‐Dependent Evolution of the Ionospheric Response to the May 2024 Superstorm: Global GNSS‐POD, GNSS‐RO, and Ground‐Based Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Capturing global ionospheric response during extreme geomagnetic storms remains a major observational challenge. During 10–11 May, 2024 superstorm, we investigate the height‐dependent response of the F‐region using multi‐constellation GNSS‐POD limb‐sounding measurements from COSMIC‐2, Spire, PlanetiQ, and FengYun‐3 satellites. Approximately 12,
Nimalan Swarnalingam, Dong L. Wu, Daniel J. Emmons, Cornelius Csar Jude H. Salinas   +3 more
wiley   +1 more source

Predicting Nitrogen Isotope Fractionation in Nitrate Deposition on Early Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Noachian and early Hesperian Mars were likely warm and wet, with an atmosphere abundant in molecular nitrogen. The recent discovery of nitrate deposits in the Yellowknife Bay mudstones at Gale Crater confirm the existence of nitrogen oxides (NOX) on Noachian Mars. The processes responsible for the production of these nitrates would fractionate
J. Shawcross, D. J. Adams, M. L. Wong, K. J. Smith, Y. L. Yung   +4 more
wiley   +1 more source

Steady-state Heating of Diffuse Coronal Plasma in a Solar Active Region

The Astrophysical Journal
The solar corona is much hotter than lower layers of the solar atmosphere—the photosphere and chromosphere. The coronal temperature is up to 1 MK in quiet Sun areas, while up to several megakelvins in active regions, which implies a key role of the ...
Gregory D. Fleishman, Alexey A. Kuznetsov, Gelu M. Nita   +2 more
doaj   +1 more source