Publications of I. I. Virtanen ordered by citations

A list of publications authored or co-authored by I. I. Virtanen, derived from the SAO/NASA Astrophysics Data System (ADS) and ordered by the numbers of citations. Publications above the horizontal line count towards the h-index.

Orcid ID: 0000-0001-7258-4453

53	Reconstructing solar magnetic fields from historical observations. I. Renormalized Ca K spectroheliograms and pseudo-magnetograms Pevtsov, Alexei A., Virtanen, Ilpo, Mursula, Kalevi, Tlatov, Andrey & Bertello, Luca, 2016, A&A, 585, A40
35	Photospheric and coronal magnetic fields in six magnetographs. II. Harmonic scaling of field intensities Virtanen, Ilpo & Mursula, Kalevi, 2017, A&A, 604, A7
34	Photospheric and coronal magnetic fields in six magnetographs. I. Consistent evolution of the bashful ballerina Virtanen, Ilpo & Mursula, Kalevi, 2016, A&A, 591, A78
33	Tilt of Sunspot Bipoles in Solar Cycles 15 to 24 Tlatova, Ksenia, Tlatov, Andrey, Pevtsov, Alexei, Mursula, Kalevi, Vasil'eva, Valeria, Heikkinen, Elina, Bertello, Luca, Pevtsov, Alexander, Virtanen, Ilpo & Karachik, Nina, 2018, Solar Physics, 293, 118
28	Automated Identification of Coronal Holes from Synoptic EUV Maps Hamada, Amr, Asikainen, Timo, Virtanen, Ilpo & Mursula, Kalevi, 2018, Solar Physics, 293, 71
28	Asymmetry of solar polar fields and the southward shift of HCS observed by Ulysses Virtanen, I. I. & Mursula, K., 2010, Journal of Geophysical Research (Space Physics), 115, A09110
26	Reconstructing solar magnetic fields from historical observations. II. Testing the surface flux transport model Virtanen, I. O. I., Virtanen, I. I., Pevtsov, A. A., Yeates, A. & Mursula, K., 2017, A&A, 604, A8
23	North-South Asymmetric Solar Cycle Evolution: Signatures in the Photosphere and Consequences in the Corona Virtanen, I. I. & Mursula, K., 2014, ApJ, 781, 99
23	Bihelical Spectrum of Solar Magnetic Helicity and Its Evolution Singh, Nishant K., Käpylä, Maarit J., Brandenburg, Axel, Käpylä, Petri J., Lagg, Andreas & Virtanen, Ilpo, 2018, ApJ, 863, 182
18	Reconstructing solar magnetic fields from historical observations. V. Sunspot magnetic field measurements at Mount Wilson Observatory Pevtsov, Alexei A., Tlatova, Kseniya A., Pevtsov, Alexander A., Heikkinen, Elina, Virtanen, Ilpo, Karachik, Nina V., Bertello, Luca, Tlatov, Andrey G., Ulrich, Roger & Mursula, Kalevi, 2019, A&A, 628, A103
16	The last dance of the bashful ballerina? Mursula, K. & Virtanen, I., 2011, A&A, 525, L12
13	Comparing Coronal and Heliospheric Magnetic Fields over Several Solar Cycles Koskela, J. S., Virtanen, I. I. & Mursula, K., 2017, ApJ, 835, 63
11	On a limitation of Zeeman polarimetry and imperfect instrumentation in representing solar magnetic fields with weaker polarization signal Pevtsov, A. A., Liu, Y., Virtanen, I., Bertello, L., Mursula, K., Leka, K. D. & Hughes, A. L. H., 2021, Journal of Space Weather and Space Climate, 11, 14
10	Photospheric and coronal magnetic fields in six magnetographs. III. Photospheric and coronal magnetic fields in 1974-2017 Virtanen, Ilpo & Mursula, Kalevi, 2019, A&A, 626, A67
10	Reconstructing solar magnetic fields from historical observations. IV. Testing the reconstruction method Virtanen, I. O. I., Virtanen, I. I., Pevtsov, A. A., Bertello, L., Yeates, A. & Mursula, K., 2019, A&A, 627, A11
10	Asymmetric Distribution of Weak Photospheric Magnetic Field Values Getachew, Tibebu, Virtanen, Ilpo & Mursula, Kalevi, 2019, ApJ, 874, 116
10	Abrupt Shrinking of Solar Corona in the Late 1990s Virtanen, Ilpo I., Koskela, Jennimari S. & Mursula, Kalevi, 2020, ApJ, 889, L28
10	Effect of Additional Magnetograph Observations From Different Lagrangian Points in Sun-Earth System on Predicted Properties of Quasi-Steady Solar Wind at 1 AU Pevtsov, A. A., Petrie, G., MacNeice, P. & Virtanen, I. I., 2020, Space Weather, 18, e02448
10	Spatial-temporal evolution of photospheric weak-field shifts in solar cycles 21-24 Mursula, K., Getachew, T. & Virtanen, I. I., 2021, A&A, 645, A47
10	The wide skirt of the bashful ballerina: Hemispheric asymmetry of the heliospheric magnetic field in the inner and outer heliosphere Mursula, K. & Virtanen, I. I., 2012, Journal of Geophysical Research (Space Physics), 117, A08104
9	Reconstructing solar magnetic fields from historical observations. III. Activity in one hemisphere is sufficient to cause polar field reversals in both hemispheres Virtanen, I. O. I., Virtanen, I. I., Pevtsov, A. A. & Mursula, K., 2018, A&A, 616, A134
9	Structure and evolution of the photospheric magnetic field in 2010-2017: comparison of SOLIS/VSM vector field and BLOS potential field Virtanen, Ilpo I., Pevtsov, Alexei A. & Mursula, Kalevi, 2019, A&A, 624, A73
8	Reconstructing solar magnetic fields from historical observations. VI. Axial dipole moments of solar active regions in cycles 21-24 Virtanen, I. O. I., Virtanen, I. I., Pevtsov, A. A. & Mursula, K., 2019, A&A, 632, A39
7	A New Signal of the Solar Magnetic Cycle: Opposite Shifts of Weak Magnetic Field Distributions in the Two Hemispheres Getachew, Tibebu, Virtanen, Ilpo & Mursula, Kalevi, 2019, Geophysical Research Letters, 46, 9327
7	Structure of the Photospheric Magnetic Field During Sector Crossings of the Heliospheric Magnetic Field Getachew, Tibebu, Virtanen, Ilpo & Mursula, Kalevi, 2017, Solar Physics, 292, 174
7	Revisiting the coronal current sheet model: Parameter range analysis and comparison with the potential field model Koskela, Jennimari, Virtanen, Ilpo & Mursula, Kalevi, 2019, A&A, 631, A17
7	Southward shift of the coronal neutral line and the heliospheric current sheet: Evidence for radial evolution of hemispheric asymmetry Koskela, J. S., Virtanen, I. I. & Mursula, K., 2018, A&A, 618, A105
6	Spatial power spectrum of the photospheric magnetic field during solar minimum Zieger, B., Virtanen, I. & Mursula, K., 2019, A&A, 623, A51
5	Reconstructing solar magnetic fields from historical observations. VIII. AIA 1600 Å contrast as a proxy of solar magnetic fields Tähtinen, I., Virtanen, I. I., Pevtsov, A. A. & Mursula, K., 2022, A&A, 664, A2
1	Reconstructing solar magnetic fields from historical observations. VII. Far-side activity in surface flux transport simulations Virtanen, I. O. I., Pevtsov, A. A., Virtanen, I. I. & Mursula, K., 2021, A&A, 652, A79