Results 31 to 40 of about 5,898 (199)

Rankine-Hugoniot relations in turbulent shocks

Frontiers in Physics, 2023
A collisionless shock is often regarded as a discontinuity with a plasma flow across it. Plasma parameters before the shock (upstream) and behind the shock (downstream) are related by the Rankine-Hugoniot relations (RH) which essentially are the mass ...
Michael Gedalin
doaj   +1 more source

Magnetohydrodynamic Shocks Revisited: Magnetically Constraining the Upstream Solar Wind Condition

The Astrophysical Journal, 2023
Magnetohydrodynamic (MHD) shocks are commonly found in various space and astrophysical systems. One often encounters the problem that only the magnetic field data are available when studying interplanetary shocks and planetary bow shocks in the solar ...
Daniel Schmid, Yasuhito Narita
doaj   +1 more source

Simulations of Electron Acceleration at Collisionless Shocks: The Effects of Surface Fluctuations [PDF]

, 2006
Energetic electrons are a common feature of interplanetary shocks and planetary bow shocks, and they are invoked as a key component of models of nonthermal radio emission, such as solar radio bursts.
Anderson K. A., Cairns I. H., D. Burgess, Fitzenreiter R. J., Gosling J. T., Knock S. A., Krauss-Varban D., Krauss-Varban D., Krauss-Varban D., Leroy M. M., Lowe R. E., Scholer M., Tsurutani B. T., Winske D., Wu C. S.   +14 more
core   +2 more sources

Morphological and kinematical analysis of the planetary nebula Hu 1-2 and its irradiated bow-shocks [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractWe present narrow-band optical and near-IR images, and high-resolution long-slit spectra of the planetary nebula Hu 1-2 that allow us to make a detailed description of its unusual morphology and internal kinematics. The data also reveal that the ansae of Hu 1-2 probably represent bow-shocks associated to high velocity outflows that are ...
Luis F. Miranda, Mónica Blanco, Martín A. Guerrero, Angels Riera   +3 more
openaire   +1 more source

Properties of mass-loading shocks, 2. Magnetohydrodynamics [PDF]

, 1992
The one-dimensional magnetohydrodynamics of shocked flows subjected to significant mass loading are considered. Recent observations at comets Giacobini-Zinner and Halley suggest that simple nonreacting MHD is an inappropriate description for active ...
Neubauer, F. M., Oughton, Sean, Webb, G. M., Zank, Gary P.   +3 more
core   +2 more sources

Efficient Energy Conversion through Vortex Arrays in the Turbulent Magnetosheath

The Astrophysical Journal, 2023
Turbulence is often enhanced when transmitted through a collisionless plasma shock. We investigate how the enhanced turbulent energy in the Earth's magnetosheath effectively dissipates via vortex arrays.
Chuanpeng Hou, Jiansen He, Die Duan, Xingyu Zhu, Wenya Li, Daniel Verscharen, Terry Liu, Tieyan Wang   +7 more
doaj   +1 more source

Magnetic Fields Recorded by Chondrules Formed in Nebular Shocks

, 2018
Recent laboratory efforts (Fu et al., 2014) have constrained the remanent magnetizations of chondrules and the magnetic field strengths at which the chondrules were exposed to as they cooled below their Curie points.
Boley, Aaron C., Desch, Steven J., Mai, Chuhong, Weiss, Benjamin P.   +3 more
core   +1 more source

Unveiling shocks in planetary nebulae [PDF]

, 2013
The propagation of a shock wave into a medium is expected to heat the material beyond the shock, producing noticeable effects in intensity line ratios such as [O III]/Halpha.
Guerrero, M. A., Luridiana, V., Medina, J. J., Miranda, L. F., Riera, A., Toalá, J. A., Velázquez, P. F.   +6 more
core   +1 more source

Unveiling the structure of the planetary nebula M 2-48: Kinematics and physical conditions [PDF]

, 2002
The kinematics and physical conditions of the bipolar planetary nebula M 2-48 are analysed from high and low dispersion long-slit spectra. Previous CCD narrow-band optical observations have suggested that this nebula is mainly formed by a pair of ...
A. Raga, C. Esteban, García-Segura, García-Segura, Gonçalves, Hartigan, Icke, J. A. López, J. M. Torrelles, J. Meaburn, Kingdon, Kingsburgh, L. F. Miranda, L. López-Martín, L. Olguín, López, López, Meaburn, Mellema, Mellema, Miranda, Miranda, Miranda, O'Connor, Peimbert, Phillips, Péquignot, R. Vázquez, Raga, Reyes-Ruiz, Rózyczka, Sabbadin, Seaton, Shaw, Shull, Soker, Storey, Vázquez   +37 more
core   +2 more sources

Impact of solar wind turbulence on a planetary bow shock

Astronomy & Astrophysics
Over the past decades, near-Earth spacecraft observations have provided insights into the physics of the bow shock, suggesting that solar wind intrinsic turbulence influences the bow shock dynamics. On the other hand, theoretical studies, based on global numerical simulations, have not yet investigated the global 3D interaction between a turbulent ...
E. Behar, F. Pucci, C. Simon Wedlund, P. Henri, G. Ballerini, L. Preisser, F. Califano   +6 more
openaire   +4 more sources