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Veröffentlichungen "Kaiser, Ralf"

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Anzahl der Einträge: 60.

2022

Kaiser, Ralf ; Ramming, Tobias:
Axisymmetric Solutions in the Geomagnetic Direction Problem.
In: Archive for Rational Mechanics and Analysis. Bd. 243 (2022) Heft 1 . - S. 329-399.
ISSN 1432-0673
DOI: https://doi.org/10.1007/s00205-021-01719-3

2018

Kaiser, Ralf:
Approximately axisymmetric antidynamo theorems.
In: SIAM Journal on Applied Mathematics. Bd. 78 (2018) Heft 6 . - S. 3188-3212.
ISSN 1095-712X
DOI: https://doi.org/10.1137/18M1173174

Rez.:

Kaiser, Ralf ; Tilgner, Andreas:
Optimal energy bounds in spherically symmetric α²-dynamos.
In: Quarterly of Applied Mathematics. Bd. 76 (2018) Heft 3 . - S. 437-461.
ISSN 1552-4485
DOI: https://doi.org/10.1090/qam/1501

Rez.:

2017

Kaiser, Ralf ; Busse, Friedrich:
On the robustness of the toroidal velocity theorem.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 111 (2017) Heft 5 . - S. 355-368.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091929.2017.1346634

Rez.:

2015

Kaiser, Ralf:
A higher-order-decay result for the dynamo equation with an application to the toroidal velocity theorem.
In: Proceedings of the Royal Society of Edinburgh Section A: Mathematics. Bd. 145 (2015) Heft 3 . - S. 535-557.
ISSN 1473-7124
DOI: https://doi.org/10.1017/S0308210513000449

Rez.:

2014

Kaiser, Ralf ; Tilgner, Andreas:
The axisymmetric antidynamo theorem revisited.
In: SIAM Journal on Applied Mathematics. Bd. 74 (2014) Heft 2 . - S. 571-597.
ISSN 1095-712X
DOI: https://doi.org/10.1137/130928376

Rez.:

2012

Kaiser, Ralf:
Uniqueness and non-uniqueness in the non-axisymmetric direction problem.
In: The Quarterly Journal of Mechanics & Applied Mathematics. Bd. 65 (2012) Heft 3 . - S. 357-360.
ISSN 1464-3855
DOI: https://doi.org/10.1093/qjmam/hbs005

Rez.:

Kaiser, Ralf:
Well-posedness of the kinematic dynamo problem.
In: Mathematical Methods in the Applied Sciences. Bd. 35 (2012) Heft 11 . - S. 1241-1255.
ISSN 1099-1476
DOI: https://doi.org/10.1002/mma.2516

Rez.:

2011

Kaiser, Ralf ; Uecker, Hannes:
Corrigendum : Well-posedness of some initial-boundary-value problems for dynamo-generated poloidal magnetic fields.
In: Proceedings of the Royal Society of Edinburgh Section A: Mathematics. Bd. 141 (2011) Heft 4 . - S. 819-824.
ISSN 1473-7124
DOI: https://doi.org/10.1017/S0308210510000028

Rez.:

2010

Kaiser, Ralf:
The geomagnetic direction problem : the two-dimensional and the three-dimensional axisymmetric cases.
In: SIAM Journal on Mathematical Analysis. Bd. 42 (2010) Heft 2 . - S. 701-728.
ISSN 1095-7154
DOI: https://doi.org/10.1137/090753486

Rez.:

2009

Kaiser, Ralf:
On purely toroidal dynamo magnetic fields caused by conductivity variations.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 103 (2009) Heft 6 . - S. 503-513.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091920903366311

Rez.:

Kaiser, Ralf:
A toroidal magnetic field theorem.
In: Communications in Mathematical Physics. Bd. 290 (2009) Heft 2 . - S. 633-649.
ISSN 1432-0916
DOI: https://doi.org/10.1007/s00220-009-0866-5

Rez.:

Kaiser, Ralf ; Uecker, Hannes:
Well-posedness of some initial-boundary-value problems for dynamo-generated poloidal magnetic fields.
In: Proceedings of the Royal Society of Edinburgh Section A: Mathematics. Bd. 139 (2009) Heft 6 . - S. 1209-1235.
ISSN 1473-7124
DOI: https://doi.org/10.1017/S0308210508000826

Rez.:

2008

Kaiser, Ralf:
On the inverse dynamo problem in a simplified mean-field model.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 102 (2008) Heft 5 . - S. 477-487.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091920802095474

Rez.:

2007

Kaiser, Ralf:
The non-radial velocity theorem revisited.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 101 (2007) Heft 3-4 . - S. 185-197.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091920701485453

Rez.:

2006

Kaiser, Ralf:
On the geomagnetic direction problem : a nonexistence result.
In: Proceedings "WASCOM 2005" 13th Conference on Waves and Stability in Continuous Media. - Hackensack, NJ : World Scientific , 2006 . - S. 292-297
ISBN 978-981-4478-03-8
DOI: https://doi.org/10.1142/9789812773616_0039

Rez.:

2005

Kaiser, Ralf ; Tilgner, Andreas ; von Wahl, Wolf:
A generalized energy functional for plane Couette flow.
In: SIAM Journal on Mathematical Analysis. Bd. 37 (2005) Heft 2 . - S. 438-454.
ISSN 1095-7154
DOI: https://doi.org/10.1137/S0036141004442604

Rez.:

Kaiser, Ralf ; Mulone, G.:
A note on nonlinear stability of plane parallel shear flows.
In: Journal of Mathematical Analysis and Applications. Bd. 302 (2005) Heft 2 . - S. 543-556.
ISSN 1096-0813
DOI: https://doi.org/10.1016/j.jmaa.2004.08.025

Rez.:

Kaiser, Ralf:
On the geomagnetic directional problem : a uniqueness result.
In: Nonlinear Analysis : Theory, Methods & Applications. Bd. 63 (2005) Heft 5-7 . - S. e2129-e2133.
ISSN 0362-546X
DOI: https://doi.org/10.1016/j.na.2005.03.001

2004

Kaiser, Ralf ; Neudert, Michael:
A non-standard boundary value problem related to geomagnetism.
In: Quarterly of Applied Mathematics. Bd. 62 (2004) Heft 3 . - S. 423-457.
ISSN 1552-4485
DOI: https://doi.org/10.1090/qam/2086038

Rez.:

Kaiser, Ralf ; Uecker, H.:
Relaxed plasma-vacuum states in cylinders.
In: The Quarterly Journal of Mechanics & Applied Mathematics. Bd. 57 (2004) Heft 1 . - S. 1-17.
ISSN 1464-3855
DOI: https://doi.org/10.1093/qjmam/57.1.1

Rez.:

Birner, Michel ; Kaiser, Ralf:
Stability balls in the rotating Bénard system.
In: Journal of Mathematical Fluid Mechanics. Bd. 6 (2004) Heft 3 . - S. 311-364.
ISSN 1422-6952
DOI: https://doi.org/10.1007/s00021-003-0096-0

Rez.:

2003

Kaiser, Ralf:
Extension of Taylor's principle to plasma-vacuum systems.
In: Astronomische Nachrichten. Bd. 324 (2003) Heft S3 . - S. 72.
ISSN 1521-3994

2002

Kaiser, Ralf ; Tilgner, Andreas:
On the generalized energy method for channel flows.
In: Proceedings "WASCOM 2001" 11th Conference on Waves and Stability in Continuous Media. - River Edge, NJ : World Scientific , 2002 . - S. 259-270
ISBN 978-981-4488-45-7
DOI: https://doi.org/10.1142/9789812777331_0033

Rez.:

2001

Kaiser, Ralf ; Schmitt, Burkhard J.:
Bounds on the energy stability limit of plane parallel shear flows.
In: Zeitschrift für angewandte Mathematik und Physik. Bd. 52 (2001) Heft 4 . - S. 573-596.
ISSN 0044-2275
DOI: https://doi.org/10.1007/PL00001562

Rez.:

Xu, Lanxi ; Kaiser, Ralf ; von Wahl, Wolf:
Global stability in the rotating Bénard system with Couette flow, the case Pr<.
In: Nonlinear Analysis : Theory, Methods & Applications. Bd. 47 (2001) Heft 6 . - S. 4233-4244.
ISSN 0362-546X
DOI: https://doi.org/10.1016/S0362-546X(01)00539-9

Rez.:

Kaiser, Ralf ; Tilgner, Andreas:
Invisible mean field dynamos.
In: Physical Review E. Bd. 63 (2001) Heft 3 . - 037301.
ISSN 1550-2376
DOI: https://doi.org/10.1103/PhysRevE.63.037301

Spies, G. O. ; Lortz, D. ; Kaiser, Ralf:
Relaxed plasma-vacuum systems.
In: Physics of Plasmas. Bd. 8 (2001) Heft 8 . - S. 3652-3663.
ISSN 1089-7674
DOI: https://doi.org/10.1063/1.1383286

2000

Kaiser, Ralf ; Neudert, M. ; von Wahl, Wolf:
On the existence of force-free magnetic fields with small nonconstant α in exterior domains.
In: Communications in Mathematical Physics. Bd. 211 (2000) Heft 1 . - S. 111-136.
ISSN 1432-0916
DOI: https://doi.org/10.1007/s002200050804

Rez.:

1999

Kagei, Y. ; Kaiser, Ralf ; von Wahl, Wolf ; Xu, L. X.:
Global Stability in Some Dissipative Systems.
In: ZAMM : Journal of Applied Mathematics and Mechanics = Zeitschrift für angewandte Mathematik und Mechanik. Bd. 79 (1999) Heft S1 . - S. 159-162.
ISSN 1521-4001
DOI: https://doi.org/10.1002/zamm.19990791342

Kaiser, Ralf ; Tilgner, Andreas:
Kinematic dynamos surrounded by a stationary conductor.
In: Physical Review E. Bd. 60 (1999) Heft 3 . - S. 2949-2952.
ISSN 1550-2376
DOI: https://doi.org/10.1103/PhysRevE.60.2949

Kaiser, Ralf ; Tilgner, Andreas:
On Vainshtein's dynamo conjecture.
In: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. Bd. 455 (1999) Heft 1988 . - S. 3139-3162.
ISSN 1364-5021
DOI: https://doi.org/10.1098/rspa.1999.0444

Rez.:

Birner, M. ; Kaiser, Ralf ; von Wahl, Wolf ; Xu, L.:
Two methods to compute stability balls in the rotating Bénard system, a comparison.
In: ZAMM : Journal of Applied Mathematics and Mechanics = Zeitschrift für angewandte Mathematik und Mechanik. Bd. 79 (1999) . - S. S775-S776.
ISSN 1521-4001

1998

Kaiser, Ralf ; Xu, L. X.:
Nonlinear stability of the rotating Bénard problem, the case Pr=1.
In: Nonlinear Differential Equations and Applications NoDEA. Bd. 5 (1998) Heft 3 . - S. 283-307.
ISSN 1021-9722
DOI: https://doi.org/10.1007/s000300050047

Rez.:

Kaiser, Ralf:
On the uniqueness of the MHD ball lightning solution.
In: ZAMM : Journal of Applied Mathematics and Mechanics = Zeitschrift für angewandte Mathematik und Mechanik. Bd. 78 (1998) Heft S3 . - S. 959-960.
ISSN 1521-4001
DOI: https://doi.org/10.1002/zamm.19980781550

Kaiser, Ralf ; von Wahl, Wolf:
Stability of plane parallel shear flow in a rotating layer heated from below.
In: Calculus of Variations and Partial Differential Equations. Bd. 6 (1998) Heft 3 . - S. 227-262.
ISSN 1432-0835
DOI: https://doi.org/10.1007/s005260050090

Rez.:

1997

Kaiser, Ralf ; Salat, A.:
New classes of three-dimensional ideal-MHD equilibria.
In: Journal of Plasma Physics. Bd. 57 (1997) Heft 2 . - S. 425-448.
ISSN 1469-7807
DOI: https://doi.org/10.1017/S0022377896004862

Kaiser, Ralf ; von Wahl, Wolf ; Xu, L. X.:
Unconditional stability up to criticality in the rotating Bénard system with superimposed Couette flow.
In: ZAMM : Journal of Applied Mathematics and Mechanics = Zeitschrift für angewandte Mathematik und Mechanik. Bd. 77 (1997) Heft S1 . - S. S149-S150.
ISSN 1521-4001

1996

Kaiser, Ralf ; Salat, A.:
Analytic Three-Dimensional Solutions of the Magnetohydrostatic Equations with Twisted Field Lines.
In: Physical Review Letters. Bd. 77 (1996) Heft 15 . - S. 3133-3136.
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.77.3133

Kaiser, Ralf ; von Wahl, Wolf:
A new functional for the Taylor-Couette problem in the small-gap limit.
In: Mathematical theory in fluid mechanics. - Harlow, Essex : Longman , 1996 . - S. 114-134 . - (Pitman Research Notes in Mathematics Series ; 354 )
ISBN 0582298105

Rez.:

Kaiser, Ralf:
Note on the scalar dynamo model.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 82 (1996) Heft 1-2 . - S. 125-135.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091929608213632

1995

Kaiser, Ralf ; Lortz, D.:
Ball lightning as an example of a magnetohydrodynamic equilibrium.
In: Physical Review E. Bd. 52 (1995) Heft 3 . - S. 3034-3044.
ISSN 1550-2376
DOI: https://doi.org/10.1103/PhysRevE.52.3034

Kaiser, Ralf ; Salat, A. ; Tataronis, J. A.:
On the existence of toroidal magnetohydrodynamic equilibria with poloidally closed magnetic field lines.
In: Physics of Plasmas. Bd. 2 (1995) Heft 5 . - S. 1599-1604.
ISSN 1089-7674
DOI: https://doi.org/10.1063/1.871309

Salat, A. ; Kaiser, Ralf:
Three‐dimensional closed field line magnetohydrodynamic equilibria without symmetries.
In: Physics of Plasmas. Bd. 2 (1995) Heft 10 . - S. 3777-3781.
ISSN 1089-7674
DOI: https://doi.org/10.1063/1.871077

Kaiser, Ralf:
Towards a poloidal magnetic field theorem.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 80 (1995) Heft 1-2 . - S. 129-144.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091929508229767

Rez.:

1994

Kaiser, Ralf:
MHD equilibria with cusped plasma-vacuum interfaces.
In: ZAMM : Journal of Applied Mathematics and Mechanics = Zeitschrift für angewandte Mathematik und Mechanik. Bd. 74 (1994) Heft 7 . - S. 257-264.
ISSN 1521-4001
DOI: https://doi.org/10.1002/zamm.19940740708

Rez.:

Kaiser, Ralf ; Schmitt, Burkhard J. ; Busse, Friedrich:
On the invisible dynamo.
In: Geophysical & Astrophysical Fluid Dynamics. Bd. 77 (1994) Heft 1 . - S. 91-109.
ISSN 0309-1929
DOI: https://doi.org/10.1080/03091929408203677

Kaiser, Ralf:
On three-dimensional toroidal surface current equilibria with rational rotational transform.
In: Physics of Plasmas. Bd. 1 (1994) Heft 8 . - S. 2693-2699.
ISSN 1089-7674
DOI: https://doi.org/10.1063/1.870596

Rez.:

Kaiser, Ralf ; Salat, A.:
Surface current equilibria from a geometric point of view.
In: Physics of Plasmas. Bd. 1 (1994) Heft 2 . - S. 281-295.
ISSN 1089-7674
DOI: https://doi.org/10.1063/1.870830

Rez.:

1993

Kaiser, Ralf ; Lortz, D.:
On the existence of plasma corners.
In: ZAMM : Journal of Applied Mathematics and Mechanics = Zeitschrift für angewandte Mathematik und Mechanik. Bd. 73 (1993) Heft 3 . - S. 165-171.
ISSN 1521-4001
DOI: https://doi.org/10.1002/zamm.19930730310

Rez.:

Kaiser, Ralf:
Resistive ballooning modes in W7-AS and W7-X.
In: Nuclear Fusion. Bd. 33 (1993) Heft 9 . - S. 1281-1291.
ISSN 1741-4326
DOI: https://doi.org/10.1088/0029-5515/33/9/I03

Kaiser, Ralf ; Tasso, H.:
Three‐dimensional toroidal magnetohydrodynamics equilibria with "canal" surface currents.
In: Physics of Fluids B: Plasma Physics. Bd. 5 (1993) Heft 3 . - S. 1030-1031.
ISSN 0899-8221
DOI: https://doi.org/10.1063/1.860506

1992

Kaiser, Ralf ; Lortz, D. ; Spies, G. O.:
Plasma corners. I. Constant toroidal current density.
In: Physics of Fluids B: Plasma Physics. Bd. 4 (1992) Heft 3 . - S. 529-534.
ISSN 0899-8221
DOI: https://doi.org/10.1063/1.860251

1991

Kaiser, Ralf:
The parabola as an equilibrium plasma-vacuum interface.
In: Zeitschrift für Naturforschung A. Bd. 46 (1991) . - S. 469-472.
ISSN 0932-0784

Kaiser, Ralf:
Resistive Ballooning Modes in W7-X.
In: Junker, J. (Hrsg.): Proceedings of the 4th Workshop on Wendelstein 7-X. - Garching bei München : Max-Planck-Institut für Plasmaphysik , 1991 . - S. 76-81

1990

Blask, W. H. ; Furui, S. ; Kaiser, Ralf ; Metsch, B. C. ; Huber, M. G.:
A study of meson-baryon couplings in the constituent quark model.
In: Zeitschrift für Physik A Hadrons and nuclei. Bd. 337 (1990) Heft 4 . - S. 451-463.
ISSN 0939-7922
DOI: https://doi.org/10.1007/BF01294983

1989

Marquard, U. ; Kaiser, Ralf ; Scholl, M.:
Lorentz algebra and critical dimension for the supermembrane.
In: Physics Letters B. Bd. 227 (1989) Heft 2 . - S. 234-238.
ISSN 0370-2693
DOI: https://doi.org/10.1016/S0370-2693(89)80028-0

Rez.:

Altevogt, P. ; Kaiser, Ralf:
Supersymmetric gauge anomalies in 2,4,6, and 10 dimensions.
In: Zeitschrift für Physik C Particles and Fields. Bd. 43 (1989) Heft 3 . - S. 455-468.
ISSN 1431-5858
DOI: https://doi.org/10.1007/BF01506542

Rez.:

Altevogt, P. ; Kaiser, Ralf:
The ten-dimensional supersymmetric gauge anomaly.
In: Physics Letters B. Bd. 219 (1989) Heft 4 . - S. 464-468.
ISSN 0370-2693
DOI: https://doi.org/10.1016/0370-2693(89)91095-2

Rez.:

1988

Kaiser, Ralf:
Supersymmetric gauge anomalies in 2 and 4 dimensions from generalized descent-equations.
In: Zeitschrift für Physik C Particles and Fields. Bd. 39 (1988) Heft 4 . - S. 585-589.
ISSN 1431-5858
DOI: https://doi.org/10.1007/BF01555992

Rez.:

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