Zobrazeno 1 - 10
of 461
pro vyhledávání: '"H. Fichtner"'
Publikováno v:
Nonlinear Processes in Geophysics, Vol 30, Pp 277-287 (2023)
The pseudopotential method is used to derive electron hole structures in a suprathermal plasma with a regularized κ probability distribution function background. The regularized character allows the exploration of small κ values beyond the standard
Externí odkaz:
https://doaj.org/article/e4924a0644d4498fbde990159af1ddf9
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 180 (2024)
The very high energy (VHE) emission of the central molecular zone (CMZ) is rarely modeled in 3D. Most approaches describe the morphology in 1D or simplify the diffusion to the isotropic case. In this work, we show the impact of a realistic 3D magneti
Externí odkaz:
https://doaj.org/article/f6dfd56cb7104c1cad86f880abbaaacc
Publikováno v:
Annales Geophysicae, Vol 36, Pp 37-46 (2018)
The Voyager plasma observations show that the physics of the heliosheath is rather complex and that the temperature derived from observation particularly differs from expectations. To explain this fact, the temperature in the heliosheath should be b
Externí odkaz:
https://doaj.org/article/e29217444c2941ad8575e03c594e2af0
Autor:
H. J. Fahr, H. Fichtner
Publikováno v:
Annales Geophysicae, Vol 30, Pp 1315-1319 (2012)
The discussion of exactly which process is causing the preferred build-up of v−5-power law tails of the velocity distribution of suprathermal particles in the solar wind is still ongoing. Criteria allowing one to discriminate between the various
Externí odkaz:
https://doaj.org/article/43849c2d2ce5472895e95d84cead12c6
Publikováno v:
Annales Geophysicae, Vol 27, Pp 989-1004 (2009)
A recent third-order, essentially non-oscillatory central scheme to advance the equations of single-fluid magnetohydrodynamics (MHD) in time has been implemented into a new numerical code. This code operates on a 3-D Cartesian, non-staggered gr
Externí odkaz:
https://doaj.org/article/5b5c9e9f13624748bdf8fcaef3895d3d
Publikováno v:
Annales Geophysicae, Vol 21, Pp 1359-1366 (2003)
A time-dependent model based on a numerical solution of Parker’s transport equation is used to model the modulation of cosmic ray protons, electrons and helium for full 11-year and 22-year modulation cycles using a compound approach. This app
Externí odkaz:
https://doaj.org/article/5e682a2002b54d69abfd405addf2c4f4
Autor:
E. Alsdorf, M. Feist, H. Fichtner-Schmittler, Th. Gross, H.-J. Jerschkewitz, U. Lohse, B. Parlitz
Publikováno v:
Adsorption Science & Technology, Vol 5 (1988)
A series of ZSM 5 samples obtained by dealumination is studied by TPD, DTA/DTG, XPS and adsorption measurements. The amount of adsorbed water at p/p 0 ≦ 0.1 and the amount of chemisorbed NH 3 corresponding to the TPD peak at 693–723 K correlate w
Externí odkaz:
https://doaj.org/article/63aab2c3713342f0b4c07e7c448d8fb7
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 517:2876-2893
Observations suggest that at altitudes of 1000–2000 km the interaction between the solar wind and Venus’ ionospheric plasma leads to ion-acoustic waves (IAWs) formation. For studying this hypothesis, a suitable hydrodynamic model relying on the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2cab602aff59a5308142664a79b4b82
https://doi.org/10.1093/mnras/stac2876
https://doi.org/10.1093/mnras/stac2876
Publikováno v:
Astronomy and Astrophysics
The shape of the ion energy spectra plays a critical role toward determining the ion energetics, the acceleration mechanisms and the possible sources of different plasma and suprathermal ion populations. The determination of the exact shape of the to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e146f0ebc1be60ca356a13d7ed6fc3cd
http://arxiv.org/abs/2206.01021
http://arxiv.org/abs/2206.01021
Autor:
J. Giacalone, H. Fahr, H. Fichtner, V. Florinski, B. Heber, M. E. Hill, J. Kóta, R. A. Leske, M. S. Potgieter, J. S. Rankin
We present a review of Anomalous Cosmic Rays (ACRs), including the history of their discovery and recent insights into their acceleration and transport in the heliosphere. We focus on a few selected topics including a discussion of mechanisms of thei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fb3922718c1824b9c134542fb4be7c7
https://resolver.caltech.edu/CaltechAUTHORS:20220520-648897000
https://resolver.caltech.edu/CaltechAUTHORS:20220520-648897000