Results 11 to 20 of about 311 (97)

A Foreshock Bubble Driven by an IMF Tangential Discontinuity: 3D Global Hybrid Simulation

Geophysical Research Letters, 2021
AbstractForeshock bubbles (FBs) have been observed upstream of solar wind tangential discontinuities (TDs). A hypothesized mechanism is that foreshock ions with gyroradii larger than the TD thickness may move to upstream side of TDs and generate FBs. In this study, we present the very first three‐dimensional global hybrid simulation of an FB driven by ...
Chih‐Ping Wang, Xueyi Wang, Terry Z. Liu, Yu Lin   +3 more
openaire   +3 more sources

Multipoint observations of the structure and evolution of foreshock bubbles and their relation to hot flow anomalies [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractWhen backstreaming foreshock ions pass through approaching solar wind discontinuities, they may get concentrated upstream of the discontinuities and form foreshock bubbles (FBs). Because FBs result in very intense global pressure variations upstream of and inside Earth's magnetosphere, they are important for solar wind‐magnetosphere coupling ...
Terry Z. Liu, Drew L. Turner, Vassilis Angelopoulos, Nick Omidi   +3 more
openaire   +3 more sources

First observations of foreshock bubbles upstream of Earth's bow shock: Characteristics and comparisons to HFAs [PDF]

Journal of Geophysical Research: Space Physics, 2013
Using multipoint in situ observations upstream of Earth's bow shock from the THEMIS mission, we present the first observations of foreshock bubbles (FBs) and compare them to observations of hot flow anomalies (HFAs). FBs are recently conceptualized kinetic phenomena that can form under the commonplace condition of a rotational discontinuity in the ...
D. L. Turner, N. Omidi, D. G. Sibeck, V. Angelopoulos   +3 more
openaire   +3 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   +6 more sources

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

Shocklets and Short Large Amplitude Magnetic Structures (SLAMS) in the High Mach Foreshock of Venus [PDF]

, 2023
Shocklets and short large-amplitude magnetic structures (SLAMS) are steepened magnetic fluctuations commonly found in Earth's upstream foreshock. Here we present Venus Express observations from the 26th of February 2009 establishing their existence in ...
Archer, Martin, Battarbee, Markus, Bertucci, Cesar, Blanco Cano, Xochitl, Burne Tobías, Sofía Helga, Collinson, Glyn A., Frahm, Rudy, Futaana, Yoshifumi, Gasque, Claire, Hietala, Heli, Karlsson, Tomas, Liu, Terry, Long, David, Opher, Merav, Plaschke, Ferdinand, Raptis, Savvas, Sergis,Nick, Wilson, Lynn B., Zhang, Tielong   +18 more
core   +5 more sources

Magnetospheric response to magnetosheath pressure pulses: A low pass filter effect [PDF]

, 2013
. We present observations from the magnetopause to the ground during periods of large amplitude, transient dynamic pressure pulses in the magnetosheath.
Archer, MO, Eastwood, JP, Horbury, TS, Weygand, JM, Yeoman, TK   +4 more
core   +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

Anti-sunward high-speed jets in the subsolar magnetosheath [PDF]

, 2013
Using 2008–2011 data from the five Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft in Earth's subsolar magnetosheath, we study high-speed jets identified as intervals when the anti-sunward component of the ...
F. Plaschke, F. Plaschke, H. Hietala, H. Hietala, V. Angelopoulos   +4 more
core   +2 more sources

Ion acceleration inside foreshock transients [PDF]

, 2018
Recent observations upstream of Earth's bow shock have revealed that foreshock transients can not only accelerate solar wind ions by reflection at their upstream boundaries but may also accelerate ions inside them.
Angelopoulos, Vassilis, Lin, Yu, Liu, Terry Z., Lu, San, Wang, Xueyi   +4 more
core   +4 more sources