Results 11 to 20 of about 89 (66)

Interplay Between a Foreshock Bubble and a Hot Flow Anomaly Forming Along the Same Rotational Discontinuity

Geophysical Research Letters
Abstract Solar wind directional discontinuities can generate transient mesoscale structures such as foreshock bubbles and hot flow anomalies (HFAs) upstream of Earth's bow shock. These structures can have a global impact on near‐Earth space, so understanding their formation conditions is essential.
Lucile Turc, Martin O. Archer, Hongyang Zhou, Yann Pfau‐Kempf, Jonas Suni, Primož Kajdič, Xóchitl Blanco‐Cano, Souhail Dahani, Markus Battarbee, Savvas Raptis, Terry Z. Liu, Hui Zhang, C. Philippe Escoubet, Adrian T. LaMoury, Shi Tao, Veera Lipsanen, Yufei Hao, Minna Palmroth   +17 more
openaire   +3 more sources

Transient Foreshock Structures Upstream of Mars: Implications of the Small Martian Bow Shock

Geophysical Research Letters, 2023
The typical subsolar stand‐off distance of Mars' bow shock is of the order of a solar wind ion convective gyroradius, making it highly non‐planar to incident ions.
H. Madanian, N. Omidi, D. G. Sibeck, L. Andersson, R. Ramstad, S. Xu, J. R. Gruesbeck, S. J. Schwartz, R. A. Frahm, D. A. Brain, P. Kajdic, F. G. Eparvier, D. L. Mitchell, S. M. Curry   +13 more
doaj   +1 more source

Multi Satellite Observation of a Foreshock Bubble Causing an Extreme Magnetopause Expansion

Journal of Geophysical Research: Space Physics, 2023
Abstract The interaction of a solar wind discontinuity with the backstreaming particles of the Earth’s ion foreshock can generate hot, tenuous plasma transients such as foreshock bubbles (FB) and hot flow anomalies (HFA).
Niklas Grimmich, Fabio Prencipe, Drew L. Turner, Terry Z. Liu, Ferdinand Plaschke, Martin O. Archer, Rumi Nakamura, David G. Sibeck, Johannes Z. D. Mieth, Hans‐Ulrich Auster, O. Dragos Constantinescu, David Fischer, Werner Magnes   +12 more
openaire   +1 more source

Evolution of a Foreshock Bubble in the Midtail Foreshock and Impact on the Magnetopause: 3‐D Global Hybrid Simulation

Geophysical Research Letters, 2020
AbstractForeshock transients have been observed in the midtail foreshock. How a foreshock transient evolves in nightside foreshock and how it may impact the midtail bow shock, magnetosheath, and magnetopause has not been simulated. In this study, we present three‐dimensional global hybrid simulation results of a foreshock bubble (FB) driven by an ...
Chih‐Ping Wang, Xueyi Wang, Terry Z. Liu, Yu Lin   +3 more
openaire   +2 more sources

Global impacts of a Foreshock Bubble: Magnetosheath, magnetopause and ground-based observations [PDF]

Planetary and Space Science, 2015
Using multipoint observations we show, for the first time, that Foreshock Bubbles (FBs) have a global impact on Earth's magnetosphere. We show that an FB, a transient kinetic phenomenon due to the interaction of backstreaming suprathermal ions with a discontinuity, modifies the total pressure upstream of the bow shock showing a decrease within the FB's
Archer, MO, Turner, DL, Eastwood, JP, Schwartz, SJ, Horbury, TS   +4 more
openaire   +3 more sources

Transient upstream mesoscale structures: drivers of solar-quiet space weather

Frontiers in Astronomy and Space Sciences
In recent years, it has become increasingly clear that space weather disturbances can be triggered by transient upstream mesoscale structures (TUMS), independently of the occurrence of large-scale solar wind (SW) structures, such as interplanetary ...
Primož Kajdič, Xóchitl Blanco-Cano, Lucile Turc, Martin Archer, Savvas Raptis, Terry Z. Liu, Yann Pfau-Kempf, Adrian T. LaMoury, Yufei Hao, Philippe C. Escoubet, Nojan Omidi, David G. Sibeck, Boyi Wang, Hui Zhang, Yu Lin   +14 more
doaj   +1 more source

Relationship Between Foreshock Structures and Magnetosheath Jets

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Plasma structures with enhanced dynamic pressure know as jets are frequently observed in the magnetosheath. We examine a possible connection of these jets with structures reported in the foreshock like SLAMS or plasmoids. A statistical study of the relation of the upstream conditions and the occurrence rates of magnetosheath (MSH) jets and ...
N. Xirogiannopoulou, O. Goncharov, J. Šafránková, Z. Němeček   +3 more
wiley   +1 more source

Multipoint Observations of a SLAMS Evolution and Its Merger With Whistler Waves

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract We report multipoint observations of a merger between a Short Large‐Amplitude Magnetic Structure (SLAMS) and 1‐Hz whistler wave packets upstream of Earth's quasi‐parallel bow shock. Using high‐resolution data from the Magnetospheric Multiscale (MMS) mission in a string‐of‐pearls configuration, we track the SLAMS as it evolves, exhibiting ...
Mengmeng Wang, Yuri V. Khotyaintsev, Daniel B. Graham, Jing‐Huan Li, Ahmad Lalti, Cecilia Norgren   +5 more
wiley   +1 more source

Different Transient Phenomena at the Edges of Traveling Foreshocks

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Past kinetic simulations and spacecraft observations have shown that traveling foreshocks (TFs) are bounded by either foreshock compressional boundaries (FCBs) or foreshock bubbles (FBs). Here we present four TFs with a different kind of structure appearing at one of their edges.
Primož Kajdič, Xochitl Blanco‐Cano, Diana Rojas‐Castillo, Nojan Omidi   +3 more
wiley   +1 more source

Determining the Magnetopause Location With SMILE‐SXI Using a Constrained Solar Wind Independent SWCX Model

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract The soft X‐ray imager (SXI) on the SMILE mission promises to revolutionize our understanding of the magnetopause by observing solar wind charge exchange emission from the magnetosheath on a global scale. The primary goal of this instrument is to infer the position and shape of the magnetopause from these images.
S. J. Wharton, J. A. Carter, S. Sembay, A. Paganini, V. Maddi, C. Pagani, Z. Clare, A. Samsonov   +7 more
wiley   +1 more source