Ilpo Virtanen

Ilpo Virtanen

PhD

Postdoc and coordinator
Space physics

Yhteensä 15 vertaisarvioitua julkaisua kansainvälisissä lehdissä. Julkaisujen yhteenlaskettu siteerausmäärä 46, joista eniten siteerattu julkaisu 17. Julkaisujen h-indeksi on 5.00. (Scopus)

Biografia

Focus area of my research is solar-heliospheric physics, especially solar magnetism and long-term solar activity. I work on the photospheric magnetic field observations since 1960s and magnetic field reconstructions since early 1900s. In addition to solar observations and data analysis, I am also working on coronal magnetic field models and heliospheric observations.

 

I am the coordinator of ReSoLVE Centre of Excellence, funded by the Academy of Finland for 2014 - 2019.

Tutkimusaiheet

  • Solar physics
  • Heliospheric physics
  • Space climate

Social media

Tutkimusryhmät

  • Postdoc and coordinator, Space Climate

Valikoidut julkaisut

  • Tlatova, Ksenia; Tlatov, Andrey; Pevtsov, Alexei; Mursula, Kalevi; Vasil'eva, Valeria; Heikkinen, Elina; Bertello, Luca; Pevtsov, Alexander; Virtanen, Ilpo; Karachik, Nina (2018) Tilt of Sunspot Bipoles in Solar Cycles 15 to 24. - Solar Phys. 293 (8), 118 . [Original] [Self-archived]
  • Singh, Nishant K.; Käpylä, Maarit J.; Brandenburg, Axel; Käpylä, Petri J.; Lagg, Andreas; Virtanen, Ilpo (2018) Bihelical spectrum of solar magnetic helicity and its evolution. - Astrophysical Journal 863 (2), 182 . [Original]
  • Koskela, J. S.; Virtanen, I. I.; Mursula, K. (2018) Southward shift of the coronal neutral line and the heliospheric current sheet: Evidence for radial evolution of hemispheric asymmetry. - Astronomy and astrophysics 618, A105 . [Original]
  • Virtanen, I. O. I.; Virtanen, I. I.; Pevtsov, A. A.; Mursula, K. (2018) Reconstructing solar magnetic fields from historical observations III. Activity in one hemisphere is sufficient to cause polar field reversals in both hemispheres. - Astronomy and astrophysics 616, A134 . [Original]
  • Hamada, Amr; Asikainen, Timo; Virtanen, Ilpo; Mursula, Kalevi (2018) Automated Identification of Coronal Holes from Synoptic EUV Maps. - Solar physics 293 (4), 71 . [Original] [Self-archived]
  • Getachew, Tibebu; Virtanen, Ilpo; Mursula, Kalevi (2017) Structure of the photospheric magnetic field during sector crossings of the heliospheric magnetic field. - Solar physics 292 (11), 174 . [Original] [Self-archived]
  • Virtanen, Ilpo; Mursula, Kalevi (2017) Photospheric and coronal magnetic fields in six magnetographs : II. Harmonic scaling of field intensities. - Astronomy and astrophysics 604, A7 . [Original] [Self-archived]
  • Virtanen, I. O. I.; Virtanen, I. I.; Pevtsov, A. A.; Yeates, A.; Mursula, K. (2017) Reconstructing solar magnetic fields from historical observations II. Testing the surface flux transport model. - Astronomy and astrophysics 604, A8 . [Original] [Self-archived]
  • Koskela, J. S.; Virtanen, I. I.; Mursula, K. (2017) Comparing coronal and heliospheric magnetic fields over several solar cycles. - Astrophysical Journal 835 (1), 63 . [Original] [Self-archived]
  • Virtanen, Ilpo; Mursula, Kalevi (2016) Photospheric and coronal magnetic fields in six magnetographs : I Consistent evolution of the bashful ballerina. - Astronomy and astrophysics 591, A78
  • Pevtsov, Alexei A.; Virtanen, Ilpo; Mursula, Kalevi; Tlatov, Andrey; Bertello, Luca (2016) Reconstructing solar magnetic fields from historical observations I. Renormalized Ca K spectroheliograms and pseudo-magnetograms. - Astronomy and astrophysics 585, A40 . [Original]
  • Virtanen, Ilpo; Mursula, Kalevi (2014) North-south asymmetric solar cycle evolution: signatures in the photosphere and consequences in the corona. - Astrophysical Journal 781 (2), 99 . [Original]
  • Mursula, Kalevi; Virtanen, Ilpo (2012) The wide skirt of the bashful ballerina: Hemispheric asymmetry of the heliospheeric magnetic eld in the inner and outer heliosphere. - Journal of Geophysical Research 117, 1-10, A08104
  • Virtanen Ilpo I. and Mursula Kalevi (2010) Asymmetry of solar polar fields and the southward shift of HCS observed by Ulysses. - Journal of Geophysical Research 115, A09110 (10 pp)
  • Mursula Kalevi, Virtanen Ilpo I. (2011) The last dance of the bashful ballerina?. - Astronomy & Astrophysics 525, L12 (5 pp)