Rami Vainio
Professor

Professor, Space Research Laboratory (Department of Physics and Astronomy)

rami.vainio@utu.fi
+358 29 450 4294
+358 50 511 4972

Vesilinnantie 5
Turku





Areas of expertise
Space physics, solar physics, astrophysics

Biography

I am a professor of space physics at the Department of Physics and Astronomy, University of Turku, Finland, and the head of Space Research Laboratory (SRL), which performs experimental, theoretical and computational research on high-energy phenomena in near-Earth space. SRL continuously collaborates with several research groups in Finland and abroad and most of our research projects are joint efforts with a large number of researchers working on the same topics. SRL develops instrumentation for detecting energetic charged particles and numerical simulation codes to understand the propagation of charged particles through electromagnetic fields in space.



Research

Solar energetic particles (SEPs). The Sun produces very energetic particles during solar eruptions, i.e., solar flares and coronal mass ejections (CMEs). These outburst of energetic particles are called SEP events or solar particle events. Because they can penetrate thick layers of material, SEPs constitute a severe radiation risk to humans and electronics in space. Together with my research group and collaborators, I study the acceleration of SEPs close to the Sun and their transport in the interplanetary medium to near-Earth space and beyond, as well as the near-Earth radiation environment generated by SEPs.

Shock waves are transitions from supersonic to subsonic flow associated with compression (i.e., increase of density) and dissipation (i.e., conversion of ordered kinetic energy of the flow to random thermal energy). In ordinary gases, shocks have thicknesses of the order of the collisional mean free path of the molecular motion. In dilute space plasmas, binary collisions are too infrequent to account for the dissipation and re-distribution of energy. Instead, collective processes involving fluctuating electromagnetic fields take the role of collisions. Such shocks are termed collisionless shocks. In the absence of binary collisions, collisionless shocks generate energetic particle populations (such as SEPs) and together with my research group and collaborators, I focus on understanding this acceleration process in detail.



Teaching

Interest areas: Space Physics, Plasma Physics, Astrophysics

Responsibilities: In charge of the Space Physics curriculum in the University of Turku.
Lecturing courses on Mathematical Methods in Physics II (BSc, 5 cp); Space Physics (BSc, 5 cp); Hydrodynamics and Hydromagnetics (MSc, 8 cp); Plasma Astrophysics (MSc, 8cp).



Publications
Go to first page Go to previous page 1 of 3 Go to next page Go to last page

In Situ Data and Effect Correlation During September 2017 Solar Particle Event (2019)
Space Weather: the International Journal of Research and Applications
Jiggens P, Clavie C, Evans H, O'Brien TP, Witasse O, Mishev AL, Nieminen P, Daly E, Kalegaev V, Vlasova N, Borisov S, Benck S, Poivey C, Cyamukungu M, Mazur J, Heynderickx D, Sandberg I, Berger T, Usoskin IG, Paassilta M, Vainio R, Straube U, Muller D, Sanchez-Cano B, Hassler D, Praks J, Niemela P, Leppinen H, Punkkinen A, Aminalragia-Giamini S, Nagatsuma T, Nagatsuma T
(
A1 Journal article – refereed)

Analytical treatment of particle motion in circularly polarized slab-mode wave fields (2018)
Journal of Plasma Physics
Schreiner C, Vainio R, Spanier F
(
A1 Journal article – refereed)

Catalogue of > 55 MeV Wide-longitude Solar Proton Events Observed by SOHO, ACE, and the STEREOs at approximate to 1 AU During 2009-2016 (2018)
Solar Physics
Paassilta M, Papaioannou A, Dresing N, Vainio R, Valtonen E, Heber B
(
A1 Journal article – refereed)

Cavitons and spontaneous hot flow anomalies in a hybrid-Vlasov global magnetospheric simulation (2018)
Annales Geophysicae
Blanco-Cano X, Battarbee M, Turc L, Dimmock AP, Kilpua EKJ, Hoilijoki S, Ganse U, Sibeck DG, Cassak PA, Fear RC, Jarvinen R, Juusola L, Pfau-Kempf Y, Vainio R, Palmroth M
(
A1 Journal article – refereed)

First Analysis of Ground-Level Enhancement (GLE) 72 on 10 September 2017: Spectral and Anisotropy Characteristics (2018)
Solar Physics
A. Mishev, I. Usoskin, O. Raukunen, M. Paassilta, E. Valtonen, L. Kocharov, R. Vainio
(
A1 Journal article – refereed)

Inversion Methodology of Ground Level Enhancements (2018) Solar Particle Radiation Storms Forecasting and Analysis: The HESPERIA HORIZON 2020 Project and Beyond B. Heber, N. Agueda, R. Bütikofer, D. Galsdorf, K. Herbst, P. Kühl, J. Labrenz, R. Vainio
(
A3 Book chapter)

Ion Acceleration by Flux Transfer Events in the Terrestrial Magnetosheath (2018)
Geophysical Research Letters
R. Järvinen, R. Vainio, M. Palmroth, L. Juusola, S. Hoilijoki, Y. Pfau‐Kempf, U. Ganse, L. Turc, S. von Alfthan
(
A1 Journal article – refereed)

Miniature spectral imager in-orbit demonstration results from Aalto-1 nanosatellite mission (2018)
IEEE International Geoscience and Remote Sensing Symposium proceedings (IGARSS)
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium Praks J., Niemelä P., Näsilä A., Kestilä A., Jovanovic N., Riwanto B., Tikka T., Leppinen H., Vainio R., Janhunen P.
(
A4 Article in conference proceedings)

Modelling of proton acceleration in application to a ground level enhancement (2018)
Astronomy and Astrophysics
Afanasiev A, Vainio R, Rouillard AP, Battarbee M, Aran A, Zucca P
(
A1 Journal article – refereed)

Modelling of Shock-Accelerated Gamma-Ray Events (2018) Solar Particle Radiation Storms Forecasting and Analysis: The HESPERIA HORIZON 2020 Project and Beyond Alexandr Afanasiev, Angels Aran, Rami Vainio, Alexis Rouillard, Pietro Zucca, David Lario, Suvi Barcewicz, Robert Siipola, Jens Pomoell, Blai Sanahuja, Olga E. Malandraki
(
A3 Book chapter)

Nanosatellite Based Spectral Imager Earth Observation Mission Results (2018) 2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC) Jovanovic N., Riwanto B., Janhunen P., Vainio R., Praks J., Niemela P., Nasila A., Leppinen H., Kestila A., Tikka T.
(
O2 Other)

National Programme for Radiation Safety Research 2018-2022 (2018) National Programme for Radiation Safety Research 2018-2022 Teemu Siiskonen, Maarit Muikku, Kari Peräjärvi, Filip Tuomisto, Juha Toivonen, Mika Valden, Tarmo Lipping, Jukka Lehto, Sauli Savolainen, Mika Kortesniemi, Peter Dendooven, Kai Nordlund, Jukka Juutilainen, JOnne Naarala, Sisako Salomaa, Jan Seppälä, Arja Kullaa, Paul Greenlees, Juha Röning, Heljä Oikarinen, Osmo Tervonen, Jaana Jurvansuu, Anssi Auvinen, Pietari Skyttä, Rami Vainio, Mika Teräs, Eeva Salminen, R. Aaltonen, P. Boström, A. Karlsson, V. Madekivi, Jani Keyriläinen
(
D4 Published development or research report or study)

Nowcasting Solar Energetic Particle Events Using Principal Component Analysis (2018)
Solar Physics
Papaioannou A, Anastasiadis A, Kouloumvakos A, Paassilta M, Vainio R, Valtonen E, Belov A, Eroshenko E, Abunina M, Abunin A
(
A1 Journal article – refereed)

On the Importance of Spatial and Velocity Resolution in the Hybrid-Vlasov Modeling of Collisionless Shocks (2018)
Frontiers in Physics
Yann Pfau-Kempf, Markus Battarbee, Urs Ganse, Sanni Hoilijoki, Lucile Turc, Sebastian von Alfthan, Rami Vainio, Minna Palmroth
(
A1 Journal article – refereed)

Particle Acceleration Mechanisms (2018) Solar Particle Radiation Storms Forecasting and Analysis: The HESPERIA HORIZON 2020 Project and Beyond Rami Vainio, Alexandr Afanasiev
(
A3 Book chapter)

Spatial Organization of Seven Extreme Solar Energetic Particle Events (2018)
Astrophysical Journal Letters
Kocharov L, Pohjolainen S, Reiner MJ, Mishev A, Wang HM, Usoskin I, Vainio R
(
A1 Journal article – refereed)

Two solar proton fluence models based on ground level enhancement observations (2018)
Journal of Space Weather and Space Climate
Osku Raukunen, Rami Vainio, Allan J. Tylka, William F. Dietrich, Piers Jiggens, Daniel Heynderickx, Mark Dierckxsens, Norma Crosby, Urs Ganse, Robert Siipola
(
A1 Journal article – refereed)

Updated Model of the Solar Energetic Proton Environment in Space (2018)
Journal of Space Weather and Space Climate
Jiggens P, Heynderickx D, Sandberg I, Truscott P, Raukunen O, Vainio R
(
A1 Journal article – refereed)

Aalto-1 Earth Observation nanosatellite mission status and in orbit experiments (2017) 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS) Jaan Praks, Antti Kestilä, Tuomas Tikka, Antti Näsilä, Bagus Riwanto, Nemanja Jovanovic, Petri Niemelä, Nuno Silva, Rami Vainio, Pekka Janhunen
(
A4 Article in conference proceedings)

Catalogue of 55-80 MeV solar proton events extending through solar cycles 23 and 24 (2017)
Journal of Space Weather and Space Climate
Paassilta M, Raukunen O, Vainio R, Valtonen E, Papaioannou A, Siipola R, Riihonen E, Dierckxsens M, Crosby N, Malandraki O, Heber B, Klein KL
(
A1 Journal article – refereed)


Last updated on 2019-21-07 at 02:19