P. J. Käpylä

3.1k total citations · 1 hit paper
99 papers, 2.1k citations indexed

About

P. J. Käpylä is a scholar working on Astronomy and Astrophysics, Molecular Biology and Oceanography. According to data from OpenAlex, P. J. Käpylä has authored 99 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 91 papers in Astronomy and Astrophysics, 68 papers in Molecular Biology and 17 papers in Oceanography. Recurrent topics in P. J. Käpylä's work include Solar and Space Plasma Dynamics (87 papers), Geomagnetism and Paleomagnetism Studies (68 papers) and Astro and Planetary Science (42 papers). P. J. Käpylä is often cited by papers focused on Solar and Space Plasma Dynamics (87 papers), Geomagnetism and Paleomagnetism Studies (68 papers) and Astro and Planetary Science (42 papers). P. J. Käpylä collaborates with scholars based in Finland, Sweden and Germany. P. J. Käpylä's co-authors include Axel Brandenburg, M. J. Korpi, M. J. Käpylä, J. Warnecke, M. J. Mantere, M. Rheinhardt, N. Olspert, I. Tuominen, Gustavo Guerrero and Dhrubaditya Mitra and has published in prestigious journals such as SHILAP Revista de lepidopterología, The Astrophysical Journal and Journal of Fluid Mechanics.

In The Last Decade

P. J. Käpylä

93 papers receiving 2.0k citations

Hit Papers

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What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Magnetism, rotation, and nonthermal emission in cool stars

2022 102 citations P. J. Käpylä et al. Astronomy and Astrophysics profile →

Peers

Countries citing papers authored by P. J. Käpylä

Since Specialization

Citations

This map shows the geographic impact of P. J. Käpylä's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by P. J. Käpylä with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. J. Käpylä more than expected).

Fields of papers citing papers by P. J. Käpylä

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. J. Käpylä. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by P. J. Käpylä. The network helps show where P. J. Käpylä may publish in the future.

Co-authorship network of co-authors of P. J. Käpylä

This figure shows the co-authorship network connecting the top 25 collaborators of P. J. Käpylä. A scholar is included among the top collaborators of P. J. Käpylä based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with P. J. Käpylä. P. J. Käpylä is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Helicity Effect on Turbulent Passive and Active Scalar Diffusivities 2025 ·The Astrophysical Journal ·Axel Brandenburg, P. J. Käpylä, I. Rogachevskii, Nobumitsu Yokoi	2
2	Magnetorotational Instability in a Solar Near-surface Mean-field Dynamo 2025 ·The Astrophysical Journal ·Axel Brandenburg, Gustav Larsson, Fabio Del Sordo, P. J. Käpylä	0
3	Origin of eclipsing time variations: Contributions of different modes of the dynamo-generated magnetic field 2022 ·Astronomy and Astrophysics ·(unknown), P. J. Käpylä, D. R. G. Schleicher, (unknown), Robi Banerjee	3
4	Origin of eclipsing time variations in post-common-envelope binaries: Role of the centrifugal force 2022 ·Astronomy and Astrophysics ·(unknown), D. R. G. Schleicher, P. J. Käpylä, (unknown), Robi Banerjee	3
5	Star-in-a-box simulations of fully convective stars 2021 ·Springer Link (Chiba Institute of Technology) ·P. J. Käpylä	23
6	Turbulent viscosity and magnetic Prandtl number from simulations of isotropically forced turbulence 2020 ·Springer Link (Chiba Institute of Technology) ·P. J. Käpylä, M. Rheinhardt, Axel Brandenburg, M. J. Käpylä	9
7	Antisolar differential rotation of slowly rotating cool stars 2019 ·Springer Link (Chiba Institute of Technology) ·G. Rüdiger, M. Küker, P. J. Käpylä, K. G. Strassmeier	7
8	Magnetic and rotational quenching of the Λ effect 2019 ·Springer Link (Chiba Institute of Technology) ·P. J. Käpylä	11
9	Transition from axi- to nonaxisymmetric dynamo modes in spherical convection models of solar-like stars 2018 ·Springer Link (Chiba Institute of Technology) ·(unknown), J. Warnecke, (unknown), P. J. Käpylä, N. Olspert, (unknown), J. Lehtinen, Axel Brandenburg	55
10	Bihelical spectrum of solar magnetic helicity and its evolution 2018 ·University of Oulu Repository (University of Oulu) ·Nishant K. Singh, M. J. Käpylä, Axel Brandenburg, P. J. Käpylä, A. Lagg, Ilpo Virtanen	19
11	Turbulent transport coefficients in spherical wedge dynamo simulations of solar-like stars 2018 ·Springer Link (Chiba Institute of Technology) ·J. Warnecke, M. Rheinhardt, (unknown), P. J. Käpylä, M. J. Käpylä, Axel Brandenburg	47
12	Convection-driven spherical shell dynamos at varying Prandtl numbers 2017 ·Springer Link (Chiba Institute of Technology) ·P. J. Käpylä, M. J. Käpylä, N. Olspert, J. Warnecke, Axel Brandenburg	34
13	Extended Subadiabatic Layer in Simulations of Overshooting Convection 2017 ·The Astrophysical Journal Letters ·P. J. Käpylä, M. Rheinhardt, Axel Brandenburg, R. Arlt, M. J. Käpylä, A. Lagg, N. Olspert, J. Warnecke	53
14	Multiple dynamo modes as a mechanism for long-term solar activity variations 2016 ·Astronomy and Astrophysics ·M. J. Käpylä, P. J. Käpylä, N. Olspert, Axel Brandenburg, J. Warnecke, Bidya Binay Karak, J. Pelt	65
15	Robustness of oscillatoryα²dynamos in spherical wedges 2016 ·Astronomy and Astrophysics ·(unknown), Axel Brandenburg, P. J. Käpylä, M. J. Käpylä	11
16	Magnetically controlled stellar differential rotation near the transition from solar to anti-solar profiles 2015 ·Springer Link (Chiba Institute of Technology) ·Bidya Binay Karak, P. J. Käpylä, (unknown), Axel Brandenburg, N. Olspert, J. Pelt	63
17	QUENCHING AND ANISOTROPY OF HYDROMAGNETIC TURBULENT TRANSPORT 2014 ·The Astrophysical Journal ·Bidya Binay Karak, M. Rheinhardt, Axel Brandenburg, P. J. Käpylä, M. J. Käpylä	33
18	Effects of strong stratification on equatorward dynamo wave propagation 2013 ·The Astrophysical Journal ·P. J. Käpylä, M. J. Mantere, Elisabeth B. Cole, J. Warnecke, Axel Brandenburg	3
19	Dynamo action and magnetic buoyancy in convection simulations with vertical shear 2011 ·Springer Link (Chiba Institute of Technology) ·Gustavo Guerrero, P. J. Käpylä	22
20	Open and closed boundaries in large-scale convective dynamos 2010 ·Springer Link (Chiba Institute of Technology) ·P. J. Käpylä, M. J. Korpi, Axel Brandenburg	13

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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