Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Chen, Christopher H."'
Autor:
Opie, Simon, Verscharen, Daniel, Chen, Christopher H. K., Owen, Christopher J., Isenberg, Philip A., Sorriso-Valvo, Luca, Franci, Luca, Matteini, Lorenzo
Publikováno v:
J. Plasma Phys. 90 (2024) 905900602
Where and under what conditions the transfer of energy between electromagnetic fields and particles takes place in the solar wind remains an open question. We investigate the conditions that promote the growth of kinetic instabilities predicted by li
Externí odkaz:
http://arxiv.org/abs/2409.18849
Autor:
Bowen, Trevor A., Bale, Stuart D., Chandran, Benjamin D. G., Chasapis, Alexandros, Chen, Christopher H. K., de Wit, Thierry Dudok, Mallet, Alfred, Meyrand, Romain, Squire, Jonathan
The dissipation of magnetized turbulence is fundamental to understanding energy transfer and heating in astrophysical systems. Collisionless interactions, such as resonant wave-particle process, are known to play a role in shaping turbulent astrophys
Externí odkaz:
http://arxiv.org/abs/2306.04881
We study the nonlinear evolution of very oblique small-scale Alfv\'en waves with $k_\perp d_i\gtrsim 1$. At these scales, the waves become significantly compressive, unlike in MHD, due to the Hall term in the equations. We demonstrate that when frequ
Externí odkaz:
http://arxiv.org/abs/2303.10192
Autor:
Opie, Simon, Verscharen, Daniel, Chen, Christopher H. K., Owen, Christopher J., Isenberg, Philip A.
Publikováno v:
A&A 672, L4 (2023)
At kinetic scales in the solar wind, instabilities transfer energy from particles to fluctuations in the electromagnetic fields while restoring plasma conditions towards thermodynamic equilibrium. We investigate the interplay between background turbu
Externí odkaz:
http://arxiv.org/abs/2303.09588
Autor:
Opie, Simon, Verscharen, Daniel, Chen, Christopher H. K., Owen, Christopher J., Isenberg, Philip A.
Using high-resolution data from Solar Orbiter, we investigate the plasma conditions necessary for the proton temperature anisotropy driven mirror-mode and oblique firehose instabilities to occur in the solar wind. We find that the unstable plasma exh
Externí odkaz:
http://arxiv.org/abs/2210.04875
Publikováno v:
A&A 650, A22 (2021)
We investigate the validity of Taylor's Hypothesis (TH) in the analysis of Alfv\'enic fluctuations of velocity and magnetic fields in solar wind streams measured by Parker Solar Probe (PSP)~during the first four encounters. We use PSP velocity and ma
Externí odkaz:
http://arxiv.org/abs/2103.12022
Autor:
Martinović, Mihailo M., Klein, Kristopher G., Huang, Jia, Chandran, Benjamin D. G., Kasper, Justin C., Lichko, Emily, Bowen, Trevor, Chen, Christopher H. K., Matteini, Lorenzo, Stevens, Michael, Case, Anthony W., Bale, Stuart D.
Parker Solar Probe (PSP) routinely observes magnetic field deflections in the solar wind at distances less than 0.3 au from the Sun. These deflections are related to structures commonly called 'switchbacks' (SBs), whose origins and characteristic pro
Externí odkaz:
http://arxiv.org/abs/2103.00374
Autor:
Duan, Die, He, Jiansen, Bowen, Trevor A., Woodham, Lloyd D., Wang, Tieyan, Chen, Christopher H. K., Mallet, Alfred, Bale, Stuart D.
The anisotropy of solar wind turbulence is a critical issue in understanding the physics of energy transfer between scales and energy conversion between fields and particles in the heliosphere. Using the measurement of \emph{Parker Solar Probe} (\emp
Externí odkaz:
http://arxiv.org/abs/2102.13294
Autor:
Bourouaine, Sofiane, Perez, Jean C., Klein, Kristopher C., Chen, Christopher H. K., Martinovic, Mihailo, Bale, Stuart D., Kasper, Justin C., Raouafi, Nour E.
We use \emph{Parker Solar Probe} (\emph{PSP}) in-situ measurements to analyze the characteristics of solar wind turbulence during the first solar encounter covering radial distances between $35.7R_\odot$ and $41.7R_\odot$. In our analysis we isolate
Externí odkaz:
http://arxiv.org/abs/2010.00936
Autor:
Duan, Die, Bowen, Trevor A., Chen, Christopher H. K., Mallet, Alfred, He, Jiansen, Bale, Stuart D., Vech, Daniel, Kasper, J. C., Pulupa, Marc, Bonnell, John W., Case, Anthony W., de Wit, Thierry Dudok, Goetz, Keith, Harvey, Peter R., Korreck, Kelly E., Larson, Davin, Livi, Roberto, MacDowall, Robert J., Malaspina, David M., Stevens, Michael, Whittlesey, Phyllis
Magnetic field fluctuations in the solar wind are commonly observed to follow a power law spectrum. Near proton-kinetic scales, a spectral break occurs which is commonly interpreted as a transition to kinetic turbulence. However, this transition is n
Externí odkaz:
http://arxiv.org/abs/2001.08239