Centre of Excellence Research on Solar Long-Term Variability and Effects, ReSoLVE

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2020

Electrodynamics of turbulent fluids with fluctuating electric conductivity

Rüdiger, G., Küker, M. & Käpylä, P. J., 1 Jan 2020, In : Journal of Plasma Physics. 905860318.

Research output: Contribution to journalArticleScientificpeer-review

Hidden magnetic fields of young suns

Kochukhov, O., Hackman, T., Lehtinen, J. J. & Wehrhahn, A., 1 Mar 2020, In : Astronomy and Astrophysics. 635, p. 1-23 23 p., A142.

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Introduction

Brandenburg, A., Candelaresi, S. & Gent, F. A., 14 Apr 2020, In : GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS. 114, 1-2, p. 1-7 7 p.

Research output: Contribution to journalArticleScientific

Magnetohydrodynamical origin of eclipsing time variations in post-common-envelope binaries for solar mass secondaries

Navarrete, F. H., Schleicher, D. R. G., Kaepylae, P. J., Schober, J., Voelschow, M. & Mennickent, R. E., Jan 2020, In : Monthly Notices of the Royal Astronomical Society. 491, 1, p. 1043-1056 14 p.

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2 Citations (Scopus)
29 Downloads (Pure)

Modelling supernova-driven turbulence

Gent, F. A., Mac Low, M. M., Käpylä, M. J., Sarson, G. R. & Hollins, J. F., 14 Apr 2020, In : GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS.

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1 Citation (Scopus)
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Sensitivity to luminosity, centrifugal force, and boundary conditions in spherical shell convection

Käpylä, P. J., Gent, F. A., Olspert, N., Käpylä, M. J. & Brandenburg, A., 14 Apr 2020, In : GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS. 114, 1-2, p. 8-34

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Shapes of stellar activity cycles

Willamo, T., Hackman, T., Lehtinen, J. J., Käpylä, M. J., Olspert, N., Viviani, M. & Warnecke, J., 1 Jun 2020, In : Astronomy and Astrophysics. 638, A69.

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The Pencil Code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained

Brandenburg, A., Johansen, A., Bourdin, P. A., Dobler, W., Lyra, W., Rheinhardt, M., Bingert, S., Haugen, N. E. L., Mee, A., Gent, F., Babkovskaia, N., Yang, C-C., Heinemann, T., Dintrans, B., Mitra, D., Candelaresi, S., Warnecke, J., Käpylä, P. J., Schreiber, A., Chatterjee, P. & 17 others, Käpylä, M. J., Li, X-Y., Krüger, J., Aarnes, J. R., Sarson, G. R., Oishi, J. S., Schober, J., Plasson, R., Sandin, C., Karchniwy, E., Rodrigues, L. F. S., Hubbard, A., Guerrero, G., Snodin, A., Losada, I. R., Pekkilä, J. & Qian, C., 1 Sep 2020, (Submitted) In : JOURNAL OF OPEN SOURCE SOFTWARE.

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Turbulent viscosity and magnetic Prandtl number from simulations of isotropically forced turbulence

Käpylä, P. J., Rheinhardt, M., Brandenburg, A. & Käpylä, M. J., 1 Apr 2020, In : Astronomy and Astrophysics. 636, 12 p., A93.

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2019

Antisolar differential rotation of slowly rotating cool stars

Rüdiger, G., Küker, M., Käpylä, P. J. & Strassmeier, K. G., 1 Oct 2019, In : Astronomy and Astrophysics. 630, p. 1-9 A109.

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2 Citations (Scopus)
49 Downloads (Pure)

Clustering and dynamic decoupling of dust grains in turbulent molecular clouds

Mattsson, L., Bhatnagar, A., Gent, F. & Villarroel, B., 11 Mar 2019, In : Monthly Notices of the Royal Astronomical Society. 483, 4, p. 5623–5641 19 p.

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2 Citations (Scopus)
81 Downloads (Pure)

Differences in the solar cycle variability of simple and complex active regions during 1996-2018

Nikbakhsh, S., Tanskanen, E., Käpylä, M. & Hackman, T., 4 Sep 2019, In : Astronomy & Astrophysics. 629, 9 p., A45.

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Effects of a subadiabatic layer on convection and dynamos in spherical wedge simulations

Käpylä, P., Viviani, M., Käpylä, M., Brandenburg, A. & Spada, F., 4 Mar 2019, In : GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS. 113, 1-2, p. 149-183 35 p.

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5 Citations (Scopus)

Effects of small-scale dynamo and compressibility on the Λ effect

Käpylä, P. J., 1 Jan 2019, In : Astronomische Nachrichten.

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1 Citation (Scopus)
36 Downloads (Pure)

f-mode strengthening from a localised bipolar subsurface magnetic field

Singh, N. K., Raichur, H., Käpylä, M. J., Rheinhardt, M., Brandenburg, A. & Käpylä, P. J., 1 Jan 2019, In : GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS. p. 1-17

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1 Citation (Scopus)
63 Downloads (Pure)

Long-term spot monitoring of the young solar analogue V889 Herculis

Willamo, T., Hackman, T., Lehtinen, J. J., Käpylä, M. J., Ilyin, I., Henry, G. W., Jetsu, L., Kochukhov, O. & Piskunov, N., 1 Feb 2019, In : Astronomy and Astrophysics. 622, A170.

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Magnetic and rotational quenching of the Λ effect

Käpylä, P., Feb 2019, In : Astronomy and Astrophysics. 622, 14 p., A195.

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MHD supernova explosions -- Large-scale magnetic field effects

Evirgen, C. C. & Gent, F., Aug 2019, (Submitted) In : Astrophysical Journal.

Research output: Contribution to journalArticleScientificpeer-review

Modelling 3D magnetic networks in a realistic solar atmosphere

Gent, F. A., Snow, B., Fedun, V. & Erdelyi, R., Nov 2019, In : Monthly Notices of the Royal Astronomical Society. 489, 1, p. 28-35

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Overshooting in simulations of compressible convection

Käpylä, P., 2019, In : Astronomy & Astrophysics. 631

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Spot evolution on LQ Hya from 2006-2017: temperature maps based on SOFIN and FIES data

Cole-Kodikara, E. M., Kaepylae, M. J., Lehtinen, J. J., Hackman, T., Ilyin, I., Piskunov, N. & Kochukhov, O., 13 Sep 2019, In : Astronomy & Astrophysics. 629, p. 1-9 9 p., A120.

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Starspot activity of HD199178 Doppler images from 1994-2017

Hackman, T., Ilyin, I., Lehtinen, J. J., Kochukhov, O., Kaepylae, M. J., Piskunov, N. & Willamo, T., 16 May 2019, In : Astronomy & Astrophysics. 625, 10 p., 79.

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Stellar Dynamos in the Transition Regime: Multiple Dynamo Modes and Antisolar Differential Rotation

Viviani, M., Kapyla, M. J., Warnecke, J., Kapyla, P. J. & Rheinhardt, M., 20 Nov 2019, In : Astrophysical Journal. 886, 1, 10 p., 21.

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2 Citations (Scopus)
28 Downloads (Pure)

The supernova-regulated ISM - VI. Magnetic effects on the structure of the interstellar medium

Evirgen, C. C., Gent, F. A., Shukurov, A., Fletcher, A. & Bushby, P. J., Oct 2019, In : Monthly Notices of the Royal Astronomical Society. 488, 4, p. 5065-5074 10 p.

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Turbulent viscosity and effective magnetic Pradntl number from simulations of isotropically forced turbulence

Käpylä, P., Rheinhardt, M., Brandenburg, A. & Käpylä, M., 2019, (Submitted) In : Astronomy & Astrophysics.

Research output: Contribution to journalArticleScientificpeer-review

2018

Bihelical Spectrum of Solar Magnetic Helicity and Its Evolution

Singh, N. K., Käpylä, M. J., Brandenburg, A., Käpylä, P. J., Lagg, A. & Virtanen, I., 20 Aug 2018, In : Astrophysical Journal. 863, 2, p. 1-11 182.

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7 Citations (Scopus)
147 Downloads (Pure)

Estimating activity cycles with probabilistic methods I. Bayesian Generalised Lomb-Scargle Periodogram with Trend

Olspert, N., Pelt, J., Käpylä, M. J. & Lehtinen, J. J., Jul 2018, In : Astronomy and Astrophysics. 615, p. 1-13 A111.

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Estimating activity cycles with probabilistic methods II: The Mount Wilson Ca H&K data

Olspert, N., Lehtinen, J. J., Käpylä, M. J., Pelt, J. & Grigorievskiy, A., 2018, In : Astronomy and Astrophysics. 619, p. 1-20 A6.

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f-mode strengthening from a localized bipolar subsurface magnetic field

Singh, N., Raichur, H., Käpylä, M., Rheinhardt, M., Brandenburg, A. & Käpylä, P., 27 Aug 2018, (Submitted) In : GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS.

Research output: Contribution to journalArticleScientificpeer-review

High-Frequency Geomagnetic Fluctuations at Auroral Oval and Polar Cap

Peitso, P., Tanskanen, E. I., Pulkkinen, T. I. & Mursula, K., Aug 2018, In : Space Weather. 16, 8, p. 1057-1072 16 p.

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Large-scale dynamos in rapidly rotating plane layer convection

Bushby, P. J., Käpylä, P. J., Masada, Y., Brandenburg, A., Favier, B., Guervilly, C. & Käpylä, M. J., 1 Apr 2018, In : Astronomy and Astrophysics. 612, p. 1-16 A97.

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5 Citations (Scopus)
119 Downloads (Pure)

Magnetic Shocks and Substructures Excited by Torsional Alfvén Wave Interactions in Merging Expanding Flux Tubes

Snow, B., Fedun, V., Gent, F. A., Verth, G. & Erdélyi, R., 20 Apr 2018, In : Astrophysical Journal. 857, 2, p. 1-8 125.

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5 Citations (Scopus)
116 Downloads (Pure)

Separating the scales in a compressible interstellar medium

Hollins, J. F., Sarson, G. R., Shukurov, A., Fletcher, A. & Gent, F. A., 2018, (Submitted) In : Monthly Notices of the Royal Astronomical Society.

Research output: Contribution to journalArticleScientificpeer-review

Small-scale dynamos in simulations of stratified turbulent convection

Käpylä, P. J., Käpylä, M. J. & Brandenburg, A., 2018, In : Astronomische Nachrichten. 339, 2-3, p. 127-133

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

The magnetic shear-current and Rädler effects in astrophysical turbulence

Brandenburg, A., Rheinhardt, M., Käpylä, M., Käpylä, P. & Singh, N. K., Sep 2018, (In preparation) In : Astrophysical Journal.

Research output: Contribution to journalArticleScientificpeer-review

The supernova-regulated ISM: IV. A comparison of simulated polarization with Planck observations

Väisälä, M., Gent, F., Juvela, M. & Käpylä, M., 1 Jun 2018, In : Astronomy and Astrophysics. 614, A101.

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4 Citations (Scopus)
120 Downloads (Pure)

The supernova-regulated ISM. III. Generation of vorticity, helicity, and mean flows

Käpylä, M., Gent, F., Väisälä, M. & Sarson, G., Mar 2018, In : Astronomy and Astrophysics. 611, 19 p., A15.

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12 Citations (Scopus)
137 Downloads (Pure)

Transition from axi- to nonaxisymmetric dynamo modes in spherical convection models of solar-like stars

Viviani, M., Warnecke, J., Käpylä, M. J., Käpylä, P. J., Olspert, N., Cole-Kodikara, E. M., Lehtinen, J. J. & Brandenburg, A., 1 Aug 2018, In : Astronomy and Astrophysics. 616, p. 1-19 A160.

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13 Citations (Scopus)
95 Downloads (Pure)

Turbulent transport coefficients in spherical wedge dynamo simulations of solar-like stars

Warnecke, J., Rheinhardt, M., Tuomisto, S., Käpylä, P. J., Käpylä, M. J. & Brandenburg, A., 2018, In : Astronomy and Astrophysics. 609, p. 1-22 22 p., A51.

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2017

Convection-driven spherical shell dynamos at varying Prandtl numbers

Käpylä, P. J., Käpylä, M. J., Olspert, N., Warnecke, J. & Brandenburg, A., 2017, In : Astronomy and Astrophysics. 599, 18 p., A4.

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15 Citations (Scopus)
194 Downloads (Pure)

Extended Subadiabatic Layer in Simulations of Overshooting Convection

Käpylä, P. J., Rheinhardt, M., Brandenburg, A., Arlt, R., Käpylä, M. J., Lagg, A., Olspert, N. & Warnecke, J., 20 Aug 2017, In : Astrophysical Journal Letters. 845, 2, p. 1-6 L23.

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18 Citations (Scopus)
151 Downloads (Pure)

Long-term variations of turbulent transport coefficients in a solar-like convective dynamo simulation

Gent, F., Käpylä, M. & Warnecke, J., Oct 2017, In : Astronomische Nachrichten. 338, 8, p. 885-895 11 p.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Method of frequency dependent correlations: Investigating the variability of total solar irradiance

Pelt, J., Käpylä, M. & Olspert, N., 1 Apr 2017, In : Astronomy and Astrophysics. 600, p. 1-19 A9.

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2 Citations (Scopus)
85 Downloads (Pure)

Methods for compressible fluid simulation on GPUs using high-order finite differences

Pekkilä, J., Väisälä, M. S., Käpylä, M. J., Käpylä, P. J. & Anjum, O., Aug 2017, In : Computer Physics Communications. 217, p. 11-22

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7 Citations (Scopus)

Solar Cycle Occurrence of Alfvénic Fluctuations and Related Geo-Efficiency

Tanskanen, E., Snekvik, K., Slavin, J. A., Pérez-Suárez, D., Viljanen, A., Goldstein, M. L., Käpylä, M. J., Hynönen, R., Häkkinen, L. V. T. & Mursula, K., 2017, In : Journal of geophysical research: Space physics. 122, 10, p. 9848-9857 10 p.

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4 Citations (Scopus)
184 Downloads (Pure)

Supernova-regulated ISM. V. Space and Time Correlations

Hollins, J. F., Sarson, G. R., Shukurov, A., Fletcher, A. & Gent, F. A., 20 Nov 2017, In : Astrophysical Journal. 850, 1, p. 1-18

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3 Citations (Scopus)
182 Downloads (Pure)

The distribution of mean and fluctuating magnetic fields in the multiphase interstellar medium

Evirgen, C. C., Gent, F. A., Shukurov, A., Fletcher, A. & Bushby, P., 1 Jan 2017, In : Monthly Notices of the Royal Astronomical Society. 464, p. L105-L109

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2016

Influence of a coronal envelope as a free boundary to global convective dynamo simulations

Warnecke, J., Käpylä, P. J., Käpylä, M. J. & Brandenburg, A., 1 Dec 2016, In : Astronomy and Astrophysics. 596, A115.

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20 Citations (Scopus)
98 Downloads (Pure)

Magnetic fields of young solar twins

Rosén, L., Kochukhov, O., Hackman, T. & Lehtinen, J., 1 Sep 2016, In : Astronomy and Astrophysics. 593, p. 1-24 24 p., A35.

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19 Citations (Scopus)
91 Downloads (Pure)

Magnetic flux concentrations from turbulent stratified convection

Käpylä, P. J., Brandenburg, A., Kleeorin, N., Käpylä, M. J. & Rogachevskii, I., 1 Apr 2016, In : Astronomy and Astrophysics. 588, p. 1-13 A150.

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21 Citations (Scopus)
93 Downloads (Pure)