Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Emily Lichko"'
The Effects of Nonequilibrium Velocity Distributions on Alfvén Ion-cyclotron Waves in the Solar Wind
Autor:
Jada Walters, Kristopher G. Klein, Emily Lichko, Michael L. Stevens, Daniel Verscharen, Benjamin D. G. Chandran
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 97 (2023)
In this work, we investigate how the complex structure found in solar wind proton velocity distribution functions (VDFs), rather than the commonly assumed two-component bi-Maxwellian structure, affects the onset and evolution of parallel-propagating
Externí odkaz:
https://doaj.org/article/cf1af76b0db5448ba66393b2f78e0b74
Magnetic wave perturbations are observed in the solar wind and in the vicinity of Earth's bow shock. For such environments, recent work on magnetic pumping with electrons trapped in the magnetic perturbations has demonstrated the possibility of effic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::374f56899faab862379dc39ac9784cb4
http://arxiv.org/abs/2102.06300
http://arxiv.org/abs/2102.06300
Autor:
Mihailo M. Martinović, Trevor A. Bowen, Anthony W. Case, Emily Lichko, Benjamin D. G. Chandran, Justin C. Kasper, Michael L. Stevens, Stuart D. Bale, Katja Klein, Jia Huang, Lorenzo Matteini, Christopher H. K. Chen
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2021, 912 (1), pp.28. ⟨10.3847/1538-4357/abebe5⟩
The Astrophysical Journal, American Astronomical Society, 2021, 912 (1), pp.28. ⟨10.3847/1538-4357/abebe5⟩
The 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 characteri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5ca28cdeca1464390b8c07be1f819a1
https://hal.sorbonne-universite.fr/hal-03223557
https://hal.sorbonne-universite.fr/hal-03223557
Autor:
Emily Lichko, Jan Egedal
Publikováno v:
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Energetic particle generation is an important component of a variety of astrophysical systems, from seed particle generation in shocks to the heating of the solar wind. It has been shown that magnetic pumping is an efficient mechanism for heating the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df4d668b43c9735476f644ea248a8368
https://doi.org/10.1038/s41467-020-16660-4
https://doi.org/10.1038/s41467-020-16660-4
Autor:
Benjamin L. Alterman, Anthony W. Case, Phyllis Whittlesey, Katja Klein, Ali Rahmati, Emily Lichko, Davin Larson, Stuart D. Bale, Roberto Livi, Michael L. Stevens, J. L. Verniero, Mihailo M. Martinović, M. McManus, Kelly E. Korreck, Justin C. Kasper
Publikováno v:
The Astrophysical Journal. 909:7
The hot and diffuse nature of the Sun's extended atmosphere allows it to persist in non-equilibrium states for long enough that wave-particle instabilities can arise and modify the evolution of the expanding solar wind. Determining which instabilitie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::730373125799d59960f4a11fc86e1e47
https://doi.org/10.3847/1538-4357/abd7a0
https://doi.org/10.3847/1538-4357/abd7a0
Based on the rate of expansion of the solar wind, the plasma should cool rapidly as a function of distance to the Sun. Observations show this is not the case. In this work, a magnetic pumping model is developed as a possible explanation for the heati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55db6c13aafae04e0e1fceee2f21e02f
Publikováno v:
Physics of Plasmas. 25:072510
A new mathematical framework is developed for efficient evaluation of ion heating during magnetic pumping of field-reversed configuration (FRC) plasmas. The topology of ion trajectories is examined through the use of action variables applied to a typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caae8015bd5e26a912649748b7e5cd42
https://doi.org/10.1063/1.5041749
https://doi.org/10.1063/1.5041749
Publikováno v:
The Astrophysical Journal. 854:L17
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::094526239b962632d6b2ae0cd1788610
https://doi.org/10.3847/2041-8213/aaaaab
https://doi.org/10.3847/2041-8213/aaaaab
Impact of compressibility and a guide field on Fermi acceleration during magnetic island coalescence
Publikováno v:
Physics of Plasmas. 24:062906
Previous work has shown that Fermi acceleration can be an effective heating mechanism during magnetic island coalescence, where electrons may undergo repeated reflections as the magnetic field lines contract. This energization has the potential to ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd089fb9050c09703e4cd69a6188b9ad
https://doi.org/10.1063/1.4985302
https://doi.org/10.1063/1.4985302