Results 61 to 70 of about 1,089,572 (146)

Martian Atmospheric Loss Through Foreshock Transient Events

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract At Mars, the MAVEN spacecraft has made observations of Hot Flow Anomalies (HFAs) in the foreshock. Due to the bow shock's proximity to the planet, it is theorized that HFAs contribute to atmospheric escape at Mars through the excavation of ionospheric ions.
Alexandros C. Cooke‐Politikos, Sergey Shuvalov, Yaxue Dong, Yi Qi, David A. Brain, Jasper S. Halekas   +5 more
wiley   +1 more source

Frequency-dependent Evolution of Propagating Intensity Disturbances in Polar Plumes

The Astrophysical Journal
Quasiperiodic disturbances in EUV emission intensity, propagating along polar plumes in the solar corona, are frequently observed. Analysis of these propagating disturbances in the 171 Å bandpass of the Solar Dynamics Observatory/Atmospheric Imaging ...
Kyung-Suk Cho, Dmitrii Y. Kolotkov, Il-Hyun Cho, Valery M. Nakariakov   +3 more
doaj   +1 more source

Ionosphere‐Thermosphere Coupling in the Northern Polar Region During the May 2024 Geomagnetic Superstorm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The May 2024 superstorm, as the most intense geomagnetic storm since 2003, caused a variety of disturbances in the magnetosphere‐ionosphere‐thermosphere system. This study investigates the long‐lasting electron density depletion in the polar region and the underlying ionosphere‐thermosphere coupling, based on a comprehensive set of ...
Lei Cai, Anita Aikio, G. P. Geethakumari, Heikki Vanhamäki, I. I. Virtanen, Shin‐ichiro Oyama, Yongliang Zhang, Jiaojiao Zhang, Marc Hairston   +8 more
wiley   +1 more source

Solar coronal-hole plasma densities and temperatures [PDF]

, 2006
Polar plumes extending from the Sun into the solar corona have long been seen during eclipses, and can now be studied without this restriction with telescopes and spectrometers on board of spacecraft.
K. Wilhelm, Wilhelm, K.
core   +1 more source

Coronal Cells in Coronal Holes: Systematic Analysis and Implications for Coronal Evolution

The Astrophysical Journal
Using advanced processing techniques, we analyze high-cadence, high-resolution extreme-ultraviolet images and show that, throughout the solar cycle, midlatitude coronal holes (CHs) are made up of ubiquitous and space-filling funnel-shaped structures (or ...
Nathalia Alzate, Simone Di Matteo, Aleida Higginson   +2 more
doaj   +1 more source

Sulfur fractionation in coronal plumes as observed by Solar Orbiter/SPICE

Coronal plumes are bright, narrow structures rooted in coronal holes that contribute to the solar wind. Their composition, particularly elemental fractionation as a function of first ionization potential (FIP), provides diagnostics of plasma properties and magnetic connectivity.
Mzerguat, Slimane, Janvier, Miho, Buchlin, Eric, Baker, Deborah, To, Andy S. H., Long, David M., Prado, Natalia Zambrana   +6 more
openaire   +2 more sources

Topological structure of the magnetic solar corona [PDF]

, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
core   +2 more sources

Refinement of Global Coronal and Interplanetary Magnetic Field Extrapolations Constrained by Remote-sensing and In Situ Observations at the Solar Minimum

The Astrophysical Journal
Solar magnetic fields are closely related to various physical phenomena on the Sun, which can be extrapolated with different models from photospheric magnetograms.
Guanglu Shi, Li Feng, Beili Ying, Shuting Li, Weiqun Gan   +4 more
doaj   +1 more source

Lawnmower Poetry and the Poetry of Lawnmowers

Critical Quarterly, Volume 68, Issue 1, Page 4-42, April 2026.
Francesca Gardner
wiley   +1 more source

Signatures of Nonlinear Waves in Coronal Plumes and Holes

, 1999
In recent Ultraviolet Coronagraph Spectrometer/Solar and Heliospheric Observatory (UVCS/SOHO) White Light Channel (WLC) observations we found quasi-periodic variations in the polarized brightness (pB) in the polar coronal holes at heliocentric distances ...
Ofman, Leon
core