Results 51 to 60 of about 1,089,572 (146)

MAVEN Observations of the Martian Magnetospheric Response to Simultaneous Quasi‐Radial Interplanetary Magnetic Field and Low Dynamic Pressure

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The state of Mars' induced magnetosphere is highly dependent on upstream solar wind conditions. Changes in dynamic pressure alter the locations of magnetospheric boundaries such as the bow shock and induced magnetosphere boundary, while the orientation of the interplanetary magnetic field (IMF) impacts the formation of the bow shock.
K. G. Hanley, S. Xu, C. M. Fowler, C. Mazelle, D. L. Mitchell, J. P. McFadden, J. S. Halekas, L. Andersson, J. Espley, S. M. Curry   +9 more
wiley   +1 more source

Simulation of Thermal Nonequilibrium Cycles in the Solar Wind

The Astrophysical Journal
Thermal nonequilibrium (TNE) is a condition of the plasma in the solar corona in which the local rate of energy loss due to radiation increases to the point that it cannot be sustained by the various heating terms acting on the plasma, precluding the ...
Roger B. Scott, Jeffrey W. Reep, Mark G. Linton, Stephen J. Bradshaw   +3 more
doaj   +1 more source

Relating near-Earth observations of an interplanetary coronal mass ejection to the conditions at its site of origin in the solar corona [PDF]

, 2005
A halo coronal mass ejection (CME) was detected on January 20, 2004. We use solar remote sensing data (SOHO, Culgoora) and near-Earth in situ data (Cluster) to identify the CME source event and show that it was a long duration flare in which a magnetic ...
Fazakerley, AN, Fazakerley, Andrew N., Culhane, J. Leonard, Mazelle, C., Balogh, A., Matthews, SA, van Driel-Gesztelyi, Lidia, Lucek, E., Reme, H, Owen, Chris J., Harra, LK, Harra, Louise K., Owen, CJ, Lucek, E, van Driel-Gesztelyi, L, Balogh, A, Culhane, JL, Matthews, Sarah A., Mazelle, C, Reme, H.   +19 more
core  

Solar cycle dependence of scaling in solar wind fluctuations [PDF]

, 2008
In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that of a scaling signature of coronal origin that ...
B. Hnat, Hnat, B., Kiyani, K., S. C. Chapman, K. Kiyani, Chapman, S. C., Chapman, Sandra C.   +6 more
core   +2 more sources

HomoTherm: An Open‐Source Approach to Modelling Heat Exchange in Humans and Other Hominins in Diverse Environments

Global Change Biology, Volume 32, Issue 4, April 2026.
We present ‘HomoTherm’, a human heat budget model for simulating humans and related species with diverse traits in diverse environments. It is part of the NicheMapR package for biophysical modelling and is a multi‐part extension of the ‘endoR’ function.
Michael R. Kearney, Duncan Mitchell, Shane K. Maloney   +2 more
wiley   +1 more source

Chromospheric and Transition Region Responses of Activities at the Base of Coronal Plumes

The Astrophysical Journal
We present the identification of the cospatial and cotemporal small scale jets—sometimes also named as jetlets—at the base of the coronal hole plume associated with chromospheric and transition region (TR) flows.
Biswanath Malaker, Vishal Upendran, Durgesh Tripathi   +2 more
doaj   +1 more source

Critical Magnetic Field Strengths for Unipolar Solar Coronal Plumes In Quiet Regions and Coronal Holes? [PDF]

, 2017
Coronal plumes are bright magnetic funnels that are found in quiet regions and coronal holes that extend high into the solar corona whose lifetimes can last from hours to days.
Panesar, Navdeep K., Winebarger, Amy, Avallone, Ellis, Tiwari, Sanjiv K., Moore, Ronald L.   +4 more
core  

Periodic Density Structures Observed in Ulysses Data: First Results

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Periodic density structures (PDSs) are advecting quasi‐periodic (periodicities between several minutes and several hours) density enhancements observed in the solar wind and corona. There is strong evidence that PDSs are formed at the Sun.
Brent M. Randol, Nicholeen Viall, Larry Kepko, Simone Di Matteo   +3 more
wiley   +1 more source

Characterization of Mercury's Atomic and Molecular Hydrogen Exosphere and the First Detection of H2 Ions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract From 1974 to 1975, the Mariner 10 spacecraft studied Mercury's environment during three flybys and detected hydrogen, helium, and possibly atomic oxygen in the exosphere using its ultraviolet spectrometer, but no molecular hydrogen. Based on the sensitivity of the occultation instrument, an upper limit for the H2 ${\mathrm{H}}_{2}$ surface ...
F. Weichbold, D. Schmid, H. Lammer, M. Volwerk, M. Scherf, N. V. Erkaev, A. Varsani, C. Simon Wedlund, C. Mazelle   +8 more
wiley   +1 more source

Coronal Inflows and Giant Polar Plumes

, 2009
International audienceWe present the first results of simulations of giant polar plumes and coronal flows. We use a 2.5D axisymmetric MHD numerical model of an isothermal corona and slow solar wind. A plume is generated just above a small magnetic bipole
Léorat, Jacques, Pinto, Rui, Grappin, Roland, R. Grappin, N. Meyer-Vernet, K. Issautier, F. Pantellini, J. Léorat, M. Maksimovic, M. Moncuquet, R. Pinto   +10 more
core   +1 more source