List of recent refereed publications

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2025

  • Pohjolainen S.: Two-Part Interplanetary Type II Solar Radio Bursts. Solar Physics, Vol. 300, id. 25, 2025. Open access

    2023

  • Pohjolainen, S., McKay, D., Talebpour Sheshvan, N., Monstein, C.: Repeated type III burst groups associated with a B-class flare and a narrow-width CME. Solar Physics, Vol. 298, id. 118, 2023. Open access
  • Pohjolainen, S., Talebpour Sheshvan, N., Monstein, C.: Separating the effects of earthside and far side solar events. A case study. Advances in Space Research, Vol. 72, Issue 9, 1 November 2023, Pages 4074-4081. Open access

    2021

  • Pohjolainen, S., Talebpour Sheshvan, N.: Formation of Isolated Radio Type II Bursts at Low Frequencies. Solar Physics, Volume 296, Issue 5, id. 81, 2021 (open access).

    2020

  • Pohjolainen, S., Talebpour Sheshvan, N.: Cut-off features in interplanetary solar radio type IV emission. Advances in Space Research, Volume 65, Issue 6, 15 March 2020, Pages 1663-1672. Author's abstract and preprint.

    2019

  • Ameri, D., Valtonen, E., Pohjolainen, S.: Properties of High-Energy Solar Particle Events Associated with Solar Radio Emissions. Solar Physics, Volume 294, Issue 9, article id. 122, 33 pp., 2019 (open access).

    2018

  • Talebpour Sheshvan, N., Pohjolainen, S.: Visibility and Origin of Compact Interplanetary Radio Type IV Bursts. Solar Physics, Volume 293, Issue 11, Article 148, November 2018 (open access).
  • Kocharov, L., Pohjolainen, S., Reiner, M. J., Mishev, A., Wang, H., Usoskin, I., Vainio, R.: patial Organization of Seven Extreme Solar Energetic Particle Events. Astrophysical Journal Letters, Volume 862, Issue 2, article id. L20, 2018.

    2017

  • Al-Hamadani, F., Pohjolainen, S., Valtonen, E.: Formation of Radio Type II Bursts During a Multiple Coronal Mass Ejection Event. Solar Physics, Volume 292, Issue 12, Article 183, December 2017.
  • Al-Hamadani, F., Pohjolainen, S., Valtonen, E.: Origin of Radio Enhancements in Type II Bursts in the Outer Corona. Solar Physics, Volume 292, Issue 9, Article 127, September 2017.
  • Kocharov, L., Pohjolainen, S., Mishev, A., Reiner, M. J., Lee, J., Laitinen, T., Didkovsky, L. V., Pizzo, V. J.; Kim, R., Klassen, A., Karlicky, M., Cho, K.-S., Gary, D. E., Usoskin, I., Valtonen, E., Vainio, R.: Investigating the Origins of Two Extreme Solar Particle Events: Proton Source Profile and Associated Electromagnetic Emissions. Astrophysical Journal, Volume 839, Issue 2, article id. 79, 2017.

    2016

  • Pohjolainen, S., Al-Hamadani, F., Valtonen, E.: Propagation of Solar Energetic Particles during Multiple Coronal Mass Ejection Events. Solar Physics, Volume 291, Issue 2, pp 487-511, 2016. . Author preprint. ADS entry.

    2015

  • Pohjolainen S., Karlicky, M., van Driel-Gesztelyi, L., Mandrini, C. H.: New Eyes Looking at Solar Activity: Challenges for Theory and Simulations - Placing It into Context. Solar Physics, Volume 290, Issue 1, pp.1-5, 2015.

    2013

  • Pohjolainen S., Allawi, H., and Valtonen E.: Origin of wide-band IP type II bursts. Astron. Astrophys., Vol. 558, id.A7, 19 pp., 2013. See ADS entry. Link to the journal article
  • Krucker S., Gimenez de Castro C.G., Hudson H.S., Trottet G., Bastian T.S., Hales A.S., Kasparova J., Klein K.-L., Kretzschmar M., Lüthi T., Mackinnon A., Pohjolainen S., White S.M.: Solar flares at submillimeter wavelengths. Astronomy and Astrophysics Review, Vol. 21, article id. 58, 2013. See ADS entry. Link to the journal article

    2012

  • Kallunki J., Pohjolainen S.: Radio pulsating structures with coronal loop contraction. Solar Physics, Vol. 280, 2012, Issue 2, pp. 491-507 (incl. movie). See ADS entry.

    2011

  • Shibasaki K., Alissandrakis C.E., Pohjolainen S.: Radio emission of the Quiet Sun and Active Regions (Invited review). Solar Physics, Vol. 273, 2011, p. 309-337. See ADS entry.

    2009

  • Agueda N., Lario D., Vainio R., Sanahuja B., Kilpua E., Pohjolainen S.: Modeling solar near-relativistic electron events. Insights into solar injection and interplanetary transport conditions. Astron. Astrophys., Vol. 507, 2009, p. 981-993. See ADS entry. The original publication is available at http://www.aanda.org

    In January 2008 I was informed that the renewable 5-year position I held would be closed down permanently, due to the financial difficulties at the department. The position tasks, in teaching, were however continued in 2008-2011 with short-term contracts (I had 7 consecutive employment contracts in that period). In 2012 I was appointed to a new position, now as a member of the faculty teaching staff.

    2008

  • Pohjolainen S., Hori K., and Sakurai T.: Radio bursts associated with flare and ejecta in the 13 July 2004 event. Solar Physics, Vol. 253, 2008, p. 291-303 (preprint). The original publication is available at www.springerlink.com
  • Magdalenic J., Vrsnak B., Pohjolainen S., Temmer M., Aurass H., and Lehtinen N.J.: A flare-generated shock during a coronal mass ejection on 24 December 1996. Solar Physics, Vol. 253, 2008, p. 305-317. The original publication is available at www.springerlink.com
  • Pohjolainen S., Pomoell J., and Vainio R.: CME liftoff with high-frequency fragmented type II burst emission. Astron. Astrophys., Vol. 490, 2008, p. 357-363 (preprint). The original publication is available at www.aanda.org
  • Pohjolainen S.: Shock-related radio emission during coronal mass ejection lift-off? (Research Note). Astron. Astrophys., Vol. 483, 2008, p. 297-300 (preprint). The original publication is available at www.aanda.org
  • Lehtinen N.J., Pohjolainen S., Huttunen-Heikinmaa K., Vainio R., Valtonen E., and Hillaris A.E.: Sources of SEP acceleration during a flare-CME event. Solar Physics, Vol. 247, 2008, p. 151-169. (preprint). The original publication is available at www.springerlink.com

    2007

  • Pohjolainen S., van Driel-Gesztelyi L., Culhane J.L., Manoharan P.K., and Elliott H.A.: CME propagation characteristics from radio observations. Solar Physics, Vol. 244, 2007, p. 167-188. (preprint). The original publication is available at www.springerlink.com
  • Culhane J.L., Pohjolainen S., van Driel-Gesztelyi L., Manoharan P.K., and Elliott H.A.: Study of CME transit speeds for the event of 07-Nov-2004. Advances in Space Research, Vol. 40, 2007, p. 1807-1814.
  • Väänänen M. and Pohjolainen S.: Spatial size and plasma variables of RHESSI flares. Solar Physics, Vol. 241, 2007, p. 279-299.

    2006

  • Pohjolainen S. and Lehtinen N.J.: Slow halo CMEs with shock signatures. Astron. Astrophys., Vol. 449, 2006, p. 359-367 (preprint). The original publication is available at www.aanda.org

    2005

  • Lehtinen N.J., Pohjolainen S., Karlicky M., Aurass H., and Otruba W.: Non-thermal processes associated with rising structures and waves during a 'halo' type CME. Astron. Astrophys., Vol. 442, 2005, p. 1049-1058.
  • Mandrini C.H., Pohjolainen S., Dasso S., Green L.M., Demoulin P., van Driel-Gesztelyi L., Foley C., and Copperwheat C.: The smallest source-region of an interplanetary magnetic cloud: A mini-sigmoid. Advances in Space Research, Vol. 36, 2005, p. 1579-1586.
  • Mandrini C.H., Pohjolainen S., Dasso S., Green L.M., Demoulin P., van Driel-Gesztelyi L., Copperwheat C., and Foley C.: Interplanetary flux rope ejected from an X-ray bright point. The smallest magnetic cloud source-region ever observed. Astron. Astrophys., Vol. 434, 2005, p. 725-740.
  • Pohjolainen S., Vilmer N., Khan J.I., and Hillaris A.E.: Early signatures of large-scale field line opening. Multi-wavelength analysis of features connected to a 'halo' CME event. Astron. Astrophys., Vol. 434, 2005, p. 329-341. (preprint)

    2004

  • Pohjolainen S.: Multi-wavelength studies from optical to radio wavelengths (invited review). Proc. IAU Symp.223, Stepanov, Benevolenskaya, and Kosovichev (eds.), Cambridge University Press, 2004, p. 329-336.

    2003

  • Klassen A., Pohjolainen S., and Klein K.-L.: Type II precursor and X-ray flare emission. Solar Physics, Vol. 218, 2003, p. 197-210.
  • Pohjolainen S.: Repeated flaring from loop-loop interaction. Solar Physics, Vol. 213, 2003, p. 319-339. DOI 10.1023/A:1023960716826, (preprint)
  • Riehokainen S., Valtaoja E., and Pohjolainen S.: Correspondence between the radio enhanced temperature, CaII (k3), H-alpha and SOHO/MDI regions. Astron. Astrophys., Vol. 402, 2003, p. 1103-1113.

    2002

  • Pohjolainen S., Hildebrandt J., Magun A., Karlicky M., and Chertok I.: Prolonged millimeter-wave radio emission from a solar flare near the limb. Astron. Astrophys., Vol. 396, 2002, p. 683-692. (preprint)
  • Vilhu O., Huovelin J., Pohjolainen S., Virtanen J., and Curdt W.: Microflaring of a solar bright point. Astron. Astrophys., Vol. 395, 2002, p. 977-981.
  • Torsti J., Kocharov L., Laivola J., Pohjolainen S., Plunkett S.P., Thompson B.J., Kaiser M.L., and Reiner M.J.: Solar particle events with helium over hydrogen enhancement in the energy range up to 100 MeV/nucleon. Solar Physics, Vol. 205, 2002, p. 123-147.

    2001

  • Pohjolainen S., Maia D., Pick M., Vilmer N., Khan J.I., Otruba W., Warmuth A., Benz A., Alissandrakis C., and Thompson B.: On-the-disk development of the halo coronal mass ejection on May 2, 1998. Astrophys. J., Vol. 556, 2001, p. 421-431.

    2000

  • Pohjolainen S.: On the origin of polar radio brightenings at short millimeter wavelengths. Astron. Astrophys., Vol. 361, 2000, p. 349-358.
  • Pohjolainen S., Portier-Fozzani F., and Ragaigne D.: Comparison of 87 GHz solar polar structures with EUV and soft X-ray emission. Astron. Astrophys. Suppl. Ser., Vol. 143, 2000, p. 227-263.
  • Brajsa R., Ruzdjak V., Vrsnak B., Wohl H., Pohjolainen S., and Urpo S.: Statistical weights and selective height corrections in the determination of the solar rotation velocity. Solar Physics, Vol. 196, 2000, p. 279-297.
  • Grebinjskij A., Bogod V., Gelfreikh G.B., Urpo S., Pohjolainen S., Shibasaki K.: Microwave tomography of solar magnetic fields. Astron. Astrophys. Suppl. Ser., Vol. 144, 2000, p. 169-180.

    1999

  • Brajsa R., Ruzdjak V., Vrsnak B., Wohl H., Pohjolainen S., and Urpo S.: An estimate of microwave low brightness temperature region's heights obtained measuring their rotation velocity. Solar Physics, Vol. 184, 1999, p. 281-296.

    1998

  • Pohjolainen S. (Ed.): CESRA Workshop on Coronal Explosive Events. Metsahovi Publications on Radio Science, HUT-MET-27, 1998.
  • Pohjolainen S. (Ed.): Metsahovi Radio Observatory Annual Report 1997. Metsahovi Reports, HUT-KURP-13, 1998.
  • Zaitsev V.V., Stepanov A.V., Urpo S., and Pohjolainen S.: LRC-circuit analog of current-carrying magnetic loop: Diagnostics of electric parameters. Astron. Astrophys., Vol. 337, 1998, p. 887-896.

    1997

  • Pohjolainen S., Valtaoja E., Urpo S., and Aurass H.: Microwave emission from coronal heights: study of a non-thermal radio flare. Solar Physics, Vol. 173, 1997, p. 131-149.
  • Brajsa R., Ruzdjak V., Vrsnak B., Pohjolainen S., Urpo S., Schroll A., and Wohl H.: On the possible changes of the solar differential rotation during the activity cycle determined using microwave low brightness temperature regions and H-alpha filaments as tracers. Solar Physics, Vol. 171, 1997, p. 1-34.
  • Jetsu L., Pohjolainen S., Pelt J., Tuominen I.: Is the longitudinal distribution of solar flares nonuniform? Astron. Astrophys., Vol. 318, 1997, p. 293-307.
  • Pohjolainen S., Valtaoja E., Urpo S.: Impulsive acceleration during gradual type solar radio flares. 31st COSPAR Scientific Assembly, Birmingham, England, 1996. Adv. Space Res., Vol. 20, No. 12, 1997, p. 2337-2340.

    1996

  • Pohjolainen S., Valtaoja E., Urpo S.: Solar microwave burst emission relation to X-ray radiation. Astron. Astrophys., Vol. 314, 1996, p. 947-956.
  • Pohjolainen S., Valtaoja E., Urpo S.: Solar microwave burst classification and correlation with soft X-rays. Astron. Astrophys., Vol. 306, 1996, p. 973-980.
  • Brajsa R., Pohjolainen S., Ruzdjak V., Sakurai T., Urpo S., Vrsnak B., Wohl H.: Helium 10830 A measurements of the Sun. Solar Physics, Vol. 163, 1996, p. 79-91.
  • Pohjolainen S., Urpo S., Herrmann R.: A multi-wavelength study of a series of solar flares on June 11, 1991. 30th COSPAR Scientific Assembly, Hamburg, Germany, 1994. Adv. Space Res., Vol. 17, No. 4/5, 1996, p. 139-142.

    1995

  • Lagerkvist C-I., Di Martino M., Blanco C., Dahlgren M., Erikson A., Lahulla J.F., Lazzarin M., Lumme K., Pohjolainen S., Riccioli D.: Physical studies of asteroids XXX: The asteroid 153 Hilda. Earth, Moon and Planets, Vol. 71, 1995, p. 189-194
  • Lagerkvist C-I., Erikson A., Debehogne H., Festin L., Magnusson P., Mottola S., Oja T., De Angelis G., Belskaya I.N., Dahlgren M., Gonano-Beurer M., Lagerros J., Lumme K., and Pohjolainen S.: Physical studies of asteroids. XXIX. Photometry and analysis of 27 asteroids. Astron. Astrophys. Suppl. Ser., Vol. 113, 1995, p. 115-129.
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