PK
P. J. Käpylä
astro-ph.SRphysics.flu-dynastro-phphysics.plasm-phastro-ph.EPastro-ph.GAastro-ph.HEastro-ph.COastro-ph.IMnlin.CD
On Valency
published · living versionsW_qaz2mexn·v1 · currentpublished
Magnetic diffusivity tensor and dynamo effects in rotating and shearing turbulence
with A. Brandenburg, K. -H. Rädler, M. Rheinhardt
1 version
Preprints & journals
107 papers in the corpus · 2003–2026Global 3D simulations of convection and dynamos in Red Giants2609.07839v1 · Carolina Ortiz-Rodr'iguez, Petri Kapyla, Juan Pablo Hidalgo et al.2026 · 0 citationsarXiv
Mean-field interpretation of star-in-a-box simulations of red giants2607.12608v1 · Carolina A. Ortiz-Rodr'iguez, Axel Brandenburg, Petri J. Kapyla2026 · 0 citationsarXiv
Eclipsing time variations in close binaries produced by azimuthal dynamo waves2604.27609v1 · Felipe H. Navarrete, Dominik R.G. Schleicher, Petri J. Kapyla et al.2026 · 0 citationsarXiv
effect in rotating hydrodynamic convection2603.09328v1 · P. J. Kapyla (KIS)2026 · 0 citationsarXiv
Connecting mean-field theory with dynamo simulations2507.00632v1 · Petri J. Kapyla (KIS)2025 · 0 citationsarXiv
Shaping core dynamos in A-type stars: The role of dipolar fossil fields2506.01017v1 · J. P. Hidalgo, P. J. Kapyla, D. R. G Schleicher et al.2025 · 3 citationsA&A 699, A250 (2025)
Magnetorotational instability in a solar near-surface mean-field dynamo2504.16849v4 · Axel Brandenburg, Gustav Larsson, Fabio Del Sordo et al.2025 · 3 citationsAstrophys. J. 993, 22 (2025)
Simulations of entropy rain-driven convection2504.00738v1 · P. J. Kapyla (KIS)2025 · 5 citationsA&A 698, L13 (2025)
Helicity effect on turbulent passive and active scalar diffusivities2501.08879v3 · Axel Brandenburg, Petri J. Kapyla, Igor Rogachevskii et al.2025 · 3 citationsAstrophys. J. 984, 88 (2025)
Lorentz force mediation of turbulent dynamo transitions2501.02306v1 · Krista M. Soderlund, Paula Wulff, Petri Kapyla et al.2025 · 11 citationsMon Not R Astron Soc (2025) 1816-1830
Magnetohydrodynamic simulations of A-type stars: Long-term evolution of core dynamo cycles2409.18066v1 · J.P. Hidalgo, P. J. Kapyla, D. R. G Schleicher et al.2024 · 10 citationsA&A 691, A326 (2024)
Strengthening of the f mode due to subsurface magnetic fields in simulations of convection2409.14840v1 · G. Kishore, Nishant K Singh, Petri Kapyla et al.2024 · 0 citationsarXiv
Effects of rotation and surface forcing on deep stellar convection zones2311.09082v1 · Petri J. Kapyla (KIS)2023 · 0 citationsProc. IAU 19 (2023) 5-15
Convective scale and subadiabatic layers in simulations of rotating compressible convection2310.12855v1 · Petri J. Kapyla2023 · 19 citationsarXiv
Simulations of dynamo action in slowly rotating M dwarfs: Dependence on dimensionless parameters2305.16447v1 · C. A. Ortiz-Rodr'iguez, P. J. Kapyla, F. H. Navarrete et al.2023 · 8 citationsarXiv
Effects of the centrifugal force in stellar dynamo simulations2305.01312v2 · Felipe H. Navarrete, Petri J. Kapyla, Dominik R.G. Schleicher et al.2023 · 1 citationA&A 678, A9 (2023)
Origin of magnetism in early-type stars2303.10707v1 · J. P. Hidalgo, P. J. Kapyla, C. A. Ortiz-Rodr'iguez et al.2023 · 0 citationsarXiv
Simulations of Solar and Stellar Dynamos and Their Theoretical Interpretation.37840839 · Käpylä, Petri J, Browning, Matthew K, Brun, Allan Sacha et al.2023 · 55 citationsSpace science reviews. 2023;219(7):58
Turbulent Prandtl number from isotropically forced turbulence2207.10335v1 · Petri J. Kapyla, Nishant K. Singh (IUCAA)2022 · 5 citationsarXiv
Transition from anti-solar to solar-like differential rotation: Dependence on Prandtl number2207.00302v1 · Petri J. Kapyla2022 · 23 citationsA&A 669, A98 (2023)
Simulations of fully convective M dwarfs: dynamo action with varying magnetic Prandtl numbers2206.14123v1 · Carolina A. Ortiz-Rodr'iguez, Dominik R. G. Schleicher, Petri J. Kapyla et al.2022 · 1 citationarXiv
Origin of eclipsing time variations in Post-Common-Envelope binaries: role of the centrifugal force2205.03163v2 · Felipe H. Navarrete, Dominik R.G. Schleicher, Petri J. Kapyla et al.2022 · 7 citationsA&A 667, A164 (2022)
Magnetism, rotation, and nonthermal emission in cool stars -- Average magnetic field measurements in 292 M dwarfs2204.00342v1 · A. Reiners, D. Shulyak, P.J. Kapyla et al.2022 · 177 citationsA&A 662, A41 (2022)
On Strengthening of the Solar f-mode Prior to Active Region Emergence Using the Fourier-Hankel Analysis2202.11236v2 · Matthias Waidele, Markus Roth, Nishant Singh et al.2022 · 9 citationsarXiv
Solar-like dynamos and rotational scaling of cycles from star-in-a-box simulations2202.04329v1 · Petri J. Kapyla2022 · 11 citationsarXiv
Prandtl number dependence of compressible convection: Flow statistics and convective energy transport2105.08453v1 · Petri J. Kapyla2021 · 15 citationsA&A 655, A78 (2021)
Reynolds number dependence of Lyapunov exponents of turbulence and fluid particles.33862704 · Fouxon, Itzhak, Feinberg, Joshua, Käpylä, Petri et al.2021 · 6 citationsPhysical review. E. 2021;103(3-1):033110
Origin of eclipsing time variations: Contributions of different modes of the dynamo-generated magnetic field2102.11110v2 · Felipe H. Navarrete, Petri J. Kapyla, Dominik R.G. Schleicher et al.2021 · 5 citationsA&A 663, A90 (2022)
Generation of mean flows in rotating anisotropic turbulence: The case of solar near-surface shear layer2012.06343v1 · A. Barekat, M. J. Kapyla, P. J. Kapyla et al.2020 · 6 citationsarXiv
Star-in-a-box simulations of fully convective stars2012.01259v2 · Petri J. Kapyla2020 · 32 citationsA&A 651, A66 (2021)
The Pencil Code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained2009.08231v1 · A. Brandenburg, A. Johansen, P. A. Bourdin et al.2020 · 179 citationsJournal of Open Source Software 6, 2807 (2021)
Common dynamo scaling in slowly rotating young and evolved stars2003.08997v1 · Jyri J. Lehtinen, Federico Spada, Maarit J. Kapyla et al.2020 · 41 citationsarXiv
Electrodynamics of turbulent fluids with fluctuating electric conductivity1911.06611v3 · G. Rudiger, M. Kuker, P. J. Kapyla2019 · 1 citationarXiv
Magneto-hydrodynamical origin of eclipsing time variations in post-common-envelope binaries for solar mass secondaries1906.06787v2 · Felipe H. Navarrete, Dominik R.G. Schleicher, Petri J. Kapyla et al.2019 · 10 citationsarXiv
Effects of small-scale dynamo and compressibility on the effect1903.04363v2 · Petri J. Kapyla2019 · 10 citationsAstron. Nachr,, 340, 744 (2019)
Stellar dynamos in the transition regime: multiple dynamo modes and anti-solar differential rotation1902.04019v4 · M. Viviani, M. J. Kapyla, J. Warnecke et al.2019 · 25 citationsThe Astrophysical Journal, Volume 886, Issue 1, article id. 21, 10 pp. (2019)
Antisolar differential rotation of slowly rotating cool stars1902.04172v2 · G. Rudiger, M. Kuker, P. Kapyla et al.2019 · 10 citationsA&A 630, A109 (2019)
Turbulent viscosity and effective magnetic Prandtl number from simulations of isotropically forced turbulence1901.00787v2 · Petri J. Kapyla, Matthias Rheinhardt, Axel Brandenburg et al.2019 · 18 citationsA&A 636, A93 (2020)
Overshooting in simulations of compressible convection1812.07916v3 · Petri J. Kapyla2018 · 38 citationsA&A 631, A122 (2019)
-mode strengthening from a localized bipolar subsurface magnetic field1808.08904v2 · Nishant K. Singh, Harsha Raichur, Maarit J. Kapyla et al.2018 · 11 citationsGeophys. Astro. Fluid 2020, 114, 196-212 (2020)
Sensitivity to luminosity, centrifugal force, and boundary conditions in spherical shell convection1807.09309v2 · Petri J. Kapyla, Frederick A. Gent, Nigul Olspert et al.2018 · 29 citationsGeophys. Astrophys. Fluid Dyn. 114, 8-34 (2020)
Bihelical spectrum of solar magnetic helicity and its evolution1804.04994v1 · Nishant K. Singh, Maarit J. Kapyla, Axel Brandenburg et al.2018 · 27 citationsAstrophys. J. 863, 182 (2018)
Effects of a subadiabatic layer on convection and dynamos in spherical wedge simulations1803.05898v2 · Petri J. Kapyla, Mariangela Viviani, Maarit J. Kapyla et al.2018 · 31 citationsGeophys. Astrophys. Fluid Dyn. 113, 149-183 (2020)
Small-scale dynamos in simulations of stratified turbulent convection1802.09607v1 · Petri J. Kapyla, Maarit J. Kapyla, Axel Brandenburg2018 · 17 citationsAstron. Nachr. 339, 127-133 (2018)
Magnetic and rotational quenching of the effect1712.08045v2 · Petri J. Kapyla2017 · 17 citationsA&A, 622, A195 (2019)
Transition from axi- to nonaxisymmetric dynamo modes in spherical convection models of solar-like stars1710.10222v2 · Mariangela Viviani, Jorn Warnecke, Maarit J. Kapyla et al.2017 · 65 citationsA&A 616, A160 (2018)
Large-scale dynamos in rapidly rotating plane layer convection1710.03174v2 · P. J. Bushby, P. J. Kapyla, Y. Masada et al.2017 · 25 citationsA&A 612, A97 (2018)
Methods for compressible fluid simulation on GPUs using high-order finite differences1707.08900v1 · Johannes Pekkila, Miikka S. Vaisala, Maarit J. Kapyla et al.2017 · 19 citationsComputer Physics Communications, Volume 217, August 2017, Pages 11-22
Extended subadiabatic layer in simulations of overshooting convection1703.06845v3 · Petri J. Kapyla, Matthias Rheinhardt, Axel Brandenburg et al.2017 · 69 citationsAstrophys. J. Lett. 845, L23 (2017)
Convection-driven spherical shell dynamos at varying Prandtl numbers1605.05885v2 · P. J. Kapyla, M. J. Kapyla, N. Olspert et al.2016 · 48 citationsA&A 599, A4 (2017)
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