Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Nicolas Bian"'
Energetic electrons in impulsive events can serve as an ideal probe of solar wind magnetic field. Using a recently developed Fractonal Velocity Dispersion Analysis (FVDA), the release time at the Sun and the path length of interplanetary magnetic fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc5d5c6f1ae2b517ffb48a4d224dea3e
https://doi.org/10.5194/egusphere-egu21-368
https://doi.org/10.5194/egusphere-egu21-368
Electromagnetic wave scattering off density inhomogeneities in the solar corona is an important process which determines both the apparent source size and the time profile of radio bursts observed at 1 AU. Here we model the scattering process using a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb3301e05555082812480a030a6a995b
http://arxiv.org/abs/1902.00239
http://arxiv.org/abs/1902.00239
Autor:
Nicolas Bian, A. Gordon Emslie
Publikováno v:
The Astrophysical journal. 865(1)
The heat flux in a plasma is determined by the degree of anisotropy in the particle distribution function, which is in turn driven by gradients in the ambient density and temperature. When the mean free path at the thermal speed is substantially smal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b9e08d05742e031a9bad9aa1ed59fc4
https://pubmed.ncbi.nlm.nih.gov/30555174
https://pubmed.ncbi.nlm.nih.gov/30555174
Autor:
Nicolas Bian, A. Gordon Emslie
Publikováno v:
The Astrophysical Journal. 897:34
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1d9ad58ce8b3de8dc711df16280b99b
https://doi.org/10.3847/1538-4357/ab9364
https://doi.org/10.3847/1538-4357/ab9364
Autor:
Nicolas Bian, Prasad Subramanian, Sijie Yu, B. Alcock, A. G. Emslie, Eduard P. Kontar, Valentin Melnik, Natasha L. S. Jeffrey, Alexey A. Kuznetsov
Publikováno v:
Nature Communications
Nature Communications, Vol 9, Iss 1, Pp 1-1 (2018)
Nature Communications, Vol 9, Iss 1, Pp 1-1 (2018)
Solar radio observations provide a unique diagnostic of the outer solar atmosphere. However, the inhomogeneous turbulent corona strongly affects the propagation of the emitted radio waves, so decoupling the intrinsic properties of the emitting source
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::043d4824717af803abcc4d071d0d8197
http://europepmc.org/articles/PMC5765264
http://europepmc.org/articles/PMC5765264
Publikováno v:
BASE-Bielefeld Academic Search Engine
Solar Physics
Solar Physics, Springer Verlag, 2017, 292 (9), pp.1-1. ⟨10.1007/s11207-017-1140-1⟩
Solar Physics
Solar Physics, Springer Verlag, 2017, 292 (9), pp.1-1. ⟨10.1007/s11207-017-1140-1⟩
We study the influence of kinetic-scale Alfv\'enic turbulence on the generation of plasma radio emission in the solar coronal regions where the plasma/magnetic pressure ratio $\beta $ is smaller than the electron/ion mass ratio $m_{e}/m_{i}$. The pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47e0a341bf3691bb9e62146eb08f1464
https://doi.org/10.1007/s11207-017-1140-1
https://doi.org/10.1007/s11207-017-1140-1
Publikováno v:
The Astrophysical Journal. 880:80
The solar atmosphere is dominated by loops of magnetic fluxes that connect the multi-million degree corona to the much cooler chromosphere. The temperature and density structure of quasi-static loops are determined by the continuous flow of energy fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f69c730f5249bf308712f051bac092b
https://doi.org/10.3847/1538-4357/ab287f
https://doi.org/10.3847/1538-4357/ab287f
Publikováno v:
The Astrophysical Journal. 862:158
A considerable fraction of the energy in a solar flare is released as suprathermal electrons; such electrons play a major role in energy deposition in the ambient atmosphere, and hence the atmospheric response to flare heating. Historically, the tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e27a48dddbbb4a52518caaeb897b5e8a
https://doi.org/10.3847/1538-4357/aaceaa
https://doi.org/10.3847/1538-4357/aaceaa
Publikováno v:
The Astrophysical Journal. 852:127
Using the "enthalpy-based thermal evolution of loops" (EBTEL) model, we investigate the hydrodynamics of the plasma in a flaring coronal loop in which heat conduction is limited by turbulent scattering of the electrons that transport the thermal heat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91757f13d7cf2f2bb6d8a92e7010eca5
https://doi.org/10.3847/1538-4357/aa9f29
https://doi.org/10.3847/1538-4357/aa9f29
Particle Acceleration in a Model of a Turbulent Reconnecting Plasma: A Fractional Diffusion Approach
Autor:
Pk K. Browning, Nicolas Bian
Publikováno v:
The Astrophysical Journal. 687:L111-L114
High-energy charged particles are produced during solar flares. These may be accelerated by the strong electric fields associated with the magnetic reconnection process which is the source of energy release in flares. A simple model of random acceler
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7eb1218d75243f2f286d2cd21ea51ed9
https://doi.org/10.1086/593145
https://doi.org/10.1086/593145