University logo Publications












Publications list in ascending order sorted by year.
121.  
AMS collaboration (authors representing the University of Turku: M. Battarbee, T. Eronen, J. Torsti and E. Valtonen), Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station, Physical Review Letters, Vol. 114, Issue 17, 171103 (9 pp) + Supplemental material, 2015
120.  
T. Laitinen, K. Huttunen-Heikinmaa, E. Valtonen, and S. Dalla, Correcting for interplanetary scattering in velocity dispersion analysis of solar energetic particles, Astrophysical Journal, Vol. 806, 114 (11 pp), 2015
119.  
AMS collaboration (authors representing the University of Turku: M. Battarbee, T. Eronen, J. Torsti and E. Valtonen), High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–500 GeV with the Alpha Magnetic Spectrometer on the International Space Station, Physical Review Letters, Vol. 113, 121101 (9 pp), 2014
118.  
AMS collaboration (authors representing the University of Turku: M. Battarbee, T. Eronen, J. Torsti and E. Valtonen), Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station, Physical Review Letters, Vol. 113, 121102 (9 pp), 2014
117.  
N. Agueda, K.-L. Klein, N. Vilmer, R. Rodríguez-Gasén, O. E. Malandraki, A. Papaioannou, M. Subirà, B. Sanahuja, E. Valtonen, W. Dröge, A. Nindos, B. Heber, S. Braune, I. G. Usoskin, D. Heynderickx, E. Talew, and R. Vainio, Release Timescales of Solar Energetic Particles in the Low Corona, Astronomy and Astrophysics, Vol. 570, A5 (12 pp), 2014
116.  
M. Cyamakungu, S. Benck, S. Borisov, G. Grégoire, J.Cabrera, J-L. Bonnet, B. Desoete, F. Preud’homme, C. Semaille, G. Creve, J. De Saedeleer, S. Ilsen, L. De Busser, V. Pierrard, S. Bonnewijn, J. Maes, E. Van Ransbeeck, E. Neefs, J. Lemaire, E. Valtonen, R. Punkkinen, M. Anciaux, K. Litefti, N. Brun, D. Pauwels, C. Quevrin, D. Moreau, A. Helderweirt, W. Hajdas, and P. Nieminen, The Energetic Particle Telescope (EPT) on board PROBA-V: description of a new science-class instrument for particle detection in space, IEEE Transactions in Nuclear Science, Vol. 61, pp. 3667-3681, 2014
115.  
V. Pierrard, G. Lopez Rosson, K. Borremans ,J. Lemaire, J. Maes, S. Bonnewijn, E. Van Ransbeeck, E. Neefs, M. Cyamukungu, S. Benck, L. Bonnet, S. Borisov, J. Cabrera. G. Grégoire, C. Semaille, G. Creve, J. De Saedeleer, B. Desoete, F. Preud’homme, M. Anciaux, A. Helderweirt, K. Litefti, N. Brun, D. Pauwels, C. Quevrin, D. Moreau, R. Punkkinen, E. Valtonen, W. Hajdas, and P. Nieminen, The Energetic Particle Telescope: First Results, Space Science Reviews, Vol. 184, pp. 87-106, 2014
114.  
AMS collaboration (authors representing the University of Turku: M. Battarbee, T. Eronen, J. Torsti and E. Valtonen), Precision Measurement of the (e+ - e-) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station, Physical Review Letters, Vol. 113, 221102 (7 pp), 2014
113.  
R. Vainio, E. Valtonen, B. Heber, O. E. Malandraki, A. Papaioannou, K.-L. Klein, A. Afanasiev, N. Agueda, H. Aurass, M. Battarbee, S. Braune, W. Dröge, U. Ganse, C. Hamadache, D. Heynderickx, K. Huttunen-Heikinmaa, J. Kiener, P. Kilian, A. Kopp, A. Kouloumvakos, S. Maisala, A. Mishev, R. Miteva, A. Nindos, T. Oittinen, O. Raukunen, E. Riihonen, R. Rodríguez-Gasén, O. Saloniemi, B. Sanahuja, R. Scherer, F. Spanier, V. Tatischeff, K. Tziotziou, I. G. Usoskin, and N. Vilmer, The first SEPServer event catalogue ~68-MeV solar proton events observed at 1 AU in 1996–2010, Journal of Space Weather and Space Climate, Vol. 3, A12 (17 pp.), 2013
112.  
AMS collaboration (authors representing the University of Turku: M. Battarbee, T. Eronen, J. Torsti and E. Valtonen), First result from the Alpha Magnetic Spectrometer on the International Space Station: Precision measurement of the positron fraction in primary cosmic rays of 0.5–350 GeV, Physical Review Letters, Vol. 110, 141102 (10pp), 2013
111.  
S. Pohjolainen, H. Allawi, and E. Valtonen, Origin of wide-band IP type II bursts, Astronomy and Astrophysics, Vol. 558, A7 (19 pp), 2013
110.  
L. Kocharov, R. Vainio, J. Pomoell, E. Valtonen, A. Klassen, and C.A. Young, Non-standard energy spectra of shock accelerated solar particles, Astrophysical Journal, Vol. 753, 87 (10 pp), 2012
109.  
O.E. Malandraki, N. Agueda,·A. Papaioannou, K.-L. Klein,·E. Valtonen,·B. Heber, W. Dröge,·H. Aurass, A. Nindos, N. Vilmer,·B. Sanahuja, A. Kouloumvakos,·S. Braune, P. Preka-Papadema,·K. Tziotziou,· C. Hamadache, J. Kiener, V. Tatischeff,·E. Riihonen,·Y. Kartavykh,·R. Rodríguez-Gasén,·and R. Vainio, Scientific Analysis within SEPServer – New perspectives in Solar Energetic Particle Research : The case study of the 13 July 2005 Event, Solar Physics, Vol. 281, pp. 333-352, 2012
108.  
A. Al-Sawad, H. Allawi, W. Al-Ramdhan, and E. Valtonen, Observation of solar energetic particle (SEP) events associated with narrow CMEs, Astrophysics and Space Sciences Transactions, 8, 1-5, 2012
107.  
O. V. Dudnik, E.V. Kurbatov, V.A. Tarasov, L.A. Andryushenko, and E. Valtonen, Comparative light outputs of small-sized scintillation detectors measured with vacuum and solid-state photodetectors, Nuclear Instruments and Methods in Physics Research A, 664, 148-153, 2012
106.  
M. Battarbee, T. Laitinen, and R. Vainio, Heavy-ion acceleration and self-generated waves in coronal shocks, Astronomy and Astrophysics, 535, A34 (6 pp), 2011
105.  
L. Kocharov, K.-S. Cho, and E. Valtonen, An analytical model for the coronal component of major solar particle events, Astrophysical Journal, 735, 4 (7 pp.), 2011
104.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), Isotopic composition of light nuclei in cosmic rays: Results from AMS-01, Astrophysical Journal, 736, 105 (11 pp), 2011
103.  
J. Huovelin, R.Vainio, H. Andersson, E. Valtonen, L. Alha, A. Mälkki, M. Grande, G.W. Fraser, M. Kato, H. Koskinen, K. Muinonen, J. Näränen, W. Schmidt, M. Syrjäsuo, M. Anttila, T. Vihavainen, E. Kiuru, M. Roos, J. Peltonen, J. Lehti, M. Talvioja, P. Portin, and M. Prydderch, Solar Intensity X-ray and particle Spectrometer (SIXS), Planetary and Space Science, 58, 96-107, 2010
102.  
A.M. Kudin, Yu.A. Borodenko, B.V. Grinyov, A.V. Didenko, A.V. Dudnik, B.G. Zaslavskya, E. Valtonen, T. Eronen, J. Peltonen, J. Lehti, H. Kettunen, A. Virtanen, and J. Huovelin, CsI(Tl) + Photodiode Scintillation Assemblies for Gamma-Ray and Proton Detectors, Instruments and Experimental Techniques, 53, 39-44, 2010
101.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), Relative composition and energy spectra of light nuclei in cosmic rays: Results from AMS-01, Astrophysical Journal, 724, 329-340, 2010
100.  
L. Kocharov, M.J. Reiner, A. Klassen, B.J. Thompson, and E. Valtonen, Observed core of a gradual solar energetic particle event, Astrophysical Journal, 725, 2262-2269, 2010
99.  
K. Huttunen-Heikinmaa and E. Valtonen, Interplanetary fast forward shocks and energetic storm particle events above 1.5 MeV, Annales Geophysicae, 27, 767-779, 2009
98.  
R. F. Wimmer-Schweingruber, R. McNutt, and The IHP/HEX team (H. Fahr, H. Fichtner, B. Heber, …, E. Valtonen, …, S. Sreenivasan, and W. Ip, 92 members), The Interstellar Heliopause Probe: Heliospheric Boundary Explorer Mission to the Interstellar Medium, Earth Moon and Planets, 104, 17-24, 2009
97.  
R. Wimmer-Schweingruber, R. McNutt, N.A. Schwadron, P.C. Frisch, M. Gruntman, P. Wurz, E. Valtonen, and The IHP/HEX Team, Interstellar Heliospheric Probe / Heliospheric Boundary Explorer Mission -- A Mission to the Outermost Boundaries of the Solar System, Experimental Astronomy, 24, 9-46, 2009
96.  
I.G. Usoskin, E. Valtonen, R. Vainio, P.J. Tanskanen, and A.M. Aurela, History of cosmic ray research in Finland, Advances in Space Research, 44, 1232-1236, 2009
95.  
E. Valtonen, J. Peltonen, O.V. Dudnik, A.M. Kudin, H. Andersson, Yu. A. Borodenko, T. Eronen, J. Huovelin, H. Kettunen, E.V. Kurbatov, J. Lehti, S. Nenonen, M. Rossi, R. Vainio, and A. Virtanen, Radiation tolerance tests of small-sized CsI(Tl) scintillators coupled to photodiodes, IEEE Transactions on Nuclear Science, 56, 2149-2154, 2009
94.  
L. Kocharov, T. Laitinen, A. Al-Sawad, O. Saloniemi, E. Valtonen, and M. J. Reiner, Gradual solar energetic particle event associated with a decelerating shock wave, Astrophysical Journal Letters, 700, L51-L55, 2009
93.  
E. Valtonen, E. Riihonen, and I-V. Lehtinen, Solar energetic particle fluences from SOHO/ERNE, Acta Geophysica, 57, 116-124, 2009
92.  
N.J. Lehtinen, S. Pohjolainen, K. Huttunen-Heikinmaa, R. Vainio, E. Valtonen, and A.E. Hillaris, Sources of SEP Acceleration during a Flare-CME Event, Solar Physics, 247, 151-169, 2008
91.  
Kocharov, L., Pizzo, V. J., Zwickl, R. D., and Valtonen, E, A new approach to interplanetary transport of solar energetic particles in impulsive events, Astrophysical Journal Letters, 680, L69-L72, 2008
90.  
Kocharov, L., Laivola, J., Mason, G. M., Didkovsky, L., and Judge, D. L., Extended 3He-rich periods of solar energetic particles in structured solar wind, Astrophysical Journal Suppl., 176, 497-510, 2008
89.  
Kartavykh, Y. Y., Dröge, W., Klecker, B., Kocharov, L., Kovaltsov, G. A., and Mobius, E, Charge state formation of energetic ultraheavy ions in a hot plasma, Astrophysical Journal, 681, 1653-1659, 2008
88.  
A. Al-Sawad, Multi Eruption Solar Energetic Particle Events Observed with SOHO/ERNE, YSC'14 Proceedings of Contributed Papers (eds. G. Ivashchenko, A. Golovin), -, 5-14, 2007
87.  
AMS Collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01, Physics Letters B, 646, 145-154, 2007
86.  
L. Kocharov, O. Saloniemi, J. Torsti, E. Riihonen, J. Lehti, K.-L. Klein, L. Didkovsky, D. L. Judge, A. R. Jones, and K. R. Pyle, High-energy protons associated with liftoff of a coronal mass ejection, Astrophysical Journal, 659, 780-787, 2007
85.  
L. Kocharov, O. Saloniemi, J. Torsti, G. Kovaltsov, and E. Riihonen, Scanning an interplanetary magnetic cloud using high-energy protons, The Astrophysical Journal, 654, 1121-1127, 2007
84.  
A. Al-Sawad, J. Torsti, L. Kocharov, and K. Huttunen-Heikinmaa, A search for two-component energetic proton events observed on board SOHO, Journal of Geophysical Research - Space Physics, 111, A10, A10S90, 2006
83.  
J. Torsti, P. Mäkelä, E. Riihonen and O. Saloniemi, Great Storm Particle Event on 2000 August 11 Observed by SOHO/ERNE, The Astrophysical Journal, 638, 530-538, 2006
82.  
E. Valtonen, Geoeffective coronal mass ejections and energetic particles, Chapman Conference on Solar Energetic Plasmas and Particles, Geophysical Monograph Series, 165, -, 2006
81.  
L. Kocharov, Modeling the energy-dependent charge states of solar energetic particles, Chapman Conference on Solar Energetic Plasmas and Particles, Geophysical Monograph Series, 165, -, 2006
80.  
E. Valtonen, Space weather effects on technology, in Space Weather: The Physics Behind a Slogan, eds., K. Scherer, H. Fichtner, B. Heber, and U. Mall, Lecture Notes in Physics, Springer-Verlag, Berlin Heidelberg, 656, 241-274, 2005
79.  
E. Valtonen, T. Laitinen, and K. Huttunen-Heikinmaa, Energetic particle signatures of geoeffective coronal mass ejections, Advances in Space Research, 36, 2295-2302, 2005
78.  
T. Laitinen, A Simple Model for Reflection-Driven Spectral Evolution of Turbulence in the Corona and Inner Heliosphere, Astrophysics and Space Sciences Transactions, 1, 35-43, 2005
77.  
K. Huttunen-Heikinmaa, E. Valtonen, and T. Laitinen, Proton and helium release times in SEP events observed with SOHO/ERNE, Astronomy and Astrophysics, 442, 673-685, 2005
76.  
L. Kocharov, G.A. Kovaltsov, J. Torsti, and K. Huttunen-Heikinmaa, Modeling the solar energetic particle events in closed structures of interplanetary magnetic field, Journal of Geophysical Research, 110, A12S03, 2005
75.  
L. Kocharov, M. Lytova, R. Vainio, T. Laitinen, and J. Torsti, Modeling the shock aftermath source of energetic particles in solar corona, Astrophysical Journal, 620, 1052-1068, 2005
74.  
M. Lytova and L. Kocharov, Charge States of Energetic Solar Ions From Coronal Shock Acceleration, Astrophysical Journal Letters, 620, L55-L58, 2005
73.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), A study of cosmic ray secondaries induced by the Mir space station using AMS-01, Nuclear Instruments and Methods in Physics Research B, 234, 321-332, 2005
72.  
J. Torsti, E. Riihonen, and L. Kocharov, The May 2-3, 1998 magnetic cloud: An interplanetary "Highway" for solar energetic particles observed with SOHO/ERNE, Astrophysical Journal Letters, 600, L83-L86, 2004
71.  
R. Vainio, M. Pohl, and R. Schlickeiser, Conversion of bulk kinetic energy into radiation in AGNs and GRBs: Particle transport effetcs, Astronomy and Astrophysics, 414, 463-474, 2004
70.  
L. Kocharov, G.A. Kovaltsov, J. Torsti, A. Anttila, and T. Sahla, Modeling the propagation of solar energetic particles in corotating compression regions of solar wind, Journal of Geophysical Research, 108(A11), SSH 1, 2003
69.  
T. Laitinen and R. Vainio, Shock acceleration of energetic particles in wave heated corona, Advances in Space Research, 32(12), 2603, 2003
68.  
J. Torsti, J. Laivola, and L. Kocharov, Common overabundance of 3He in high-energy solar particles, Astronomy and Astrophysics, 408, L1-L4, 2003
67.  
T. Laitinen, H. Fichtner, and R. Vainio, Toward a self-consistent treatment of the cyclotron wave heating and acceleration of the solar wind plasma, Journal of Geophysical Research, 108(A2), SSH 9, 2003
66.  
R. Vainio, T. Laitinen, and H. Fichtner, A simple analytical expression for the power spectrum of cascading Alfvén waves in the solar wind, Astronomy and Astrophysics, 407, 713-723, 2003
65.  
J. Torsti, L. Kocharov, J. Laivola, I. Chertok, and B.J. Thompson, High-energy 3He-rich solar particle events, Solar Physics, 214, 177-193, 2003
64.  
L. Kocharov and J. Torsti, The origin of high-energy 3He-rich solar particle events, Astrophysical Journal, 586, 1430-1435, 2003
63.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), The Alpha Magnetic Spectrometer (AMS) on the International Space Station: Part I - results from the test flight on the space shuttle, Physics Reports, 366, 331-405, 2002
62.  
G.A. Kovaltsov, Y.Y. Kartavykh, L. Kocharov, V.M. Ostryakov, and J. Torsti, Comment on "Model of ionic charge sates of impulsive solar energetic particles in solar falres" by M. Dolores Rodríguez-Frías, Luis del Peral, and Jorge Pérez-Peraza, Journal of Geophysical Research, 107, SSH 3-1 - 3-4, 2002
61.  
R. Schlickeiser, R. Vainio, M. Böttcher, I. Lerche, M. Pohl, and C. Schuster, Conversion of relativistic pair energy into radiation in the jets of active galactic nuclei, Astronomy & Astrophysics, 393, 69-87, 2002
60.  
Torsti, L. Kocharov, J. Laivola, N. Lehtinen, M.L. Kaiser, and M.J. Reiner, Solar particle event with exceptionally high 3He-enhancement in the energy range up to 50 MeV per nucleon, Astrophysical Journal Letters, 573, L59-L63, 2002
59.  
L. Kocharov, G.A. Kovaltsov, and J. Torsti, Comment on "Particle charge evolution during acceleration processes in solar flares" by M D Rodríguez-Frías, L del Peral and J Pérez-Peraza, Journal of Physics G, 28, 1511-1514, 2002
58.  
L. Kocharov and J. Torsti, Hybrid solar energetic particle events observed onboard SOHO, Solar Physics, 207, 148-157, 2002
57.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), The Alpha Magnetic Spectrometer (AMS), Nuclear Instruments and Methods in Physics Research A, 478, 119-122, 2002
56.  
J. Torsti, L. Kocharov, J. Laivola, S. Pohjolainen, S.P. Plunkett, B.J. Thompson, M.L. Kaiser, and M.J. Reiner, Solar particle events with helium over hydrogen enhancement in the energy range up to 100 MeV/nucleon, Solar Physics, 205, 123-147, 2002
55.  
A. Anttila and J. Torsti, Energetic particles during the first two years of SOHO science mission, Advances in Space Research, 29, 319-324, 2002
54.  
P. Mäkelä and J. Torsti, Energetic particle fluxes during the Bastille day solar eruption, Solar Physics, 204, 215-227, 2001
53.  
R. Vainio and R. Schlickeiser, The effect of anisotropic gas pressure on Alfven-wave transmission and test-particle acceleration at parallel shock waves, Astronomy and Astrophysics, 378, 309, 2001
52.  
R. Vainio and L. Kocharov, Proton transport through self-generated waves in impulsive flares, Astronomy and Astrophysics, 375, 251, 2001
51.  
G.A. Kovaltsov, A.F. Barghouty, L. Kocharov, V.M. Ostryakov, and J. Torsti, Charge-equilibration of Fe ions acccelerated in a hot plasma, Astronomy and Astrophysics, 375, 1075-1081, 2001
50.  
L. Kocharov, G.A. Kovaltsov, and J. Torsti, Dynamic cycles in charge and energy for ion ions accelerated in a hot plasma, Astrophysical Journal, 556, 919-927, 2001
49.  
R. Vainio and T. Laitinen, The relation between cyclotron heating and energetic particles on open coronal field lines, Astronomy and Astrophysics, 371, 738-747, 2001
48.  
E. Valtonen, K. Kecskeméty, H. Kunow, R. Müller-Mellin, and J. Torsti, Background reduction for quiet time particle fluxes aboard the Solar and Heliospheric Observatory, Journal of Geophysical Research, 106, 10705-10714, 2001
47.  
L. Kocharov, J. Torsti, O.C. St. Cyr, and T. Huhtanen, A relation between dynamics of coronal mass ejections and production of solar energetic particles, Astronomy and Astrophysics, 370, 1064-1070, 2001
46.  
J. Torsti, L. Kocharov, D. Innes, J. Laivola, and T. Sahla, Injection of energetic protons during solar eruption on 1999 May 9: Effect of flare and coronal mass ejection, Astronomy & Astrophysics, 365, 198-203, 2001
45.  
A. Anttila and T. Sahla, ERNE observations of energetic particles associated with Earth-directed coronal mass ejections in April and May, 1997, Annales Geophysicae, 18, 1373-1381, 2000
44.  
V.M. Ostryakov, Yu.Yu. Kartavykh, D. Ruffolo, G.A. Kovaltsov, and L. Kocharov, Charge state distributions of iron in impulsive solar flares, Journal of Geophysical Research, 105, 27315, 2000
43.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), Helium in Near Earth Orbit, Physics Letters B, 494, 193-202, 2000
42.  
J. Torsti, P. Mäkelä, M. Teittinen, and J. Laivola, SOHO/ERNE measurements of energetic H, He, O and Fe fluxes during the November 6, 1997 solar event, Astrophysical Journal, 544, 1169-1180, 2000
41.  
R. Vainio, Charged-particle resonance conditions and transport coefficients in slab-mode waves, Astrophysical Journal Supplement Series, 131, 519-529, 2000
40.  
L. Kocharov, G.A. Kovaltsov, and J. Torsti, Trapping and precipitation of protons during stochastic acceleration in magnetic loops, Astrophysical Journal, 543, 438-446, 2000
39.  
T. Laitinen, K.L. Klein, L. Kocharov, J.Torsti, G. Trottet, V. Bothmer, M.L. Kaiser, G. Rank, and M.J. Reiner, Solar energetic particle event and radio bursts associated with the 1996 July 9 flare and coronal mass ejection, Astronomy & Astrophysics, 360, 729-741, 2000
38.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), Cosmic Protons, Physics Letters B, 490, 27-35, 2000
37.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, E. Valtonen), Leptons in Near Earth Orbit, Physics Letters B, 484, 10-22, 2000
36.  
L. Kocharov, G.A. Kovaltsov, J. Torsti, and V.M. Ostryakov, Evaluation of solar energetic Fe charge states: effect on proton-impact ionization, Astronomy & Astrophysics, 357, 716-724, 2000
35.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, and E. Valtonen), Protons in Near Earth Orbit, Physics Letters B, 472, 215-226, 2000
34.  
R. Vainio, L. Kocharov, and T. Laitinen, Interplanetary and Interacting Protons Accelerated in a Parallel Shock Wave, Astrophysical Journal, 528, 1015-1025, 2000
33.  
L. Kocharov, J. Torsti, T. Laitinen, and M. Teittinen, Post-impulsive-phase acceleration in a wide range of solar longitude, Solar Physics, 190, 295-307, 1999
32.  
AMS collaboration (authors representing the University of Turku: T. Eronen, T. Laitinen, E. Riihonen, J. Torsti, and E. Valtonen), Search for Antihelium in Cosmic Rays, Physics Letters B, 461, 387-396, 1999
31.  
L. Kocharov, G.A. Kovaltsov, T. Laitinen, P. Mäkelä, and J. Torsti, Interacting and Interplanetary Protons Accelerated on Diverging Magnetic Field Lines: Stochastic Acceleration, Astrophysical Journal, 521, 895-905, 1999
30.  
R. Schlickeiser and R. Vainio, Recent developments in quasilinear cosmic ray acceleration theories, Astrophysics and Space Science, 264, 457-469, 1999
29.  
L. Kocharov, G.A. Kovaltsov, and J. Torsti, An Analytic Description of Coronal Proton Trapping, Astrophysical Journal, 519, 422-432, 1999
28.  
R.G. Marsden, T.R. Sanderson, C. Tranquille, K.J. Trattner, A. Anttila, and J. Torsti, On the gradients of ACR oxygen at intermediate heliocentric distances: Ulysses/SOHO results, Advances in Space Research, 23, (3)531-(3)534, 1999
27.  
J. Torsti, L. Kocharov, M. Teittinen, A. Anttila, T. Laitinen, P. Mäkelä, E. Riihonen, R. Vainio, and E. Valtonen, Energetic (~ 10 to 65 MeV) protons observed by ERNE on August 13-14, 1996: Eruption on the solar back side as a possible source of the event, Journal of Geophysical Research, 104, 9903-9909, 1999
26.  
J. Torsti, A. Anttila, and T. Sahla, Concurrent solar and corotating interaction region particle events in August 1996, Journal of Geophysical Research, 104, 9891-9902, 1999
25.  
R. Vainio and R. Schlickeiser, Self-consistent Alfven-wave transmission and test-particle acceleration at parallel shocks, Astronomy & Astrophysics, 343, 303-311, 1999
24.  
J. Torsti, L.G. Kocharov, M. Teittinen, and B.J. Thompson, Injection of > 10 MeV protons in association with a coronal Moreton wave, Astrophysical Journal, 510, 460-465, 1999
23.  
L. Kocharov, H. Debrunner, G. Kovaltsov, J. Lockwood, M. McConnell, P. Nieminen, G. Rank, J. Ryan, and V. Schönfelder, Deduced spectrum of interacting protons accelerated after the impulsive phase of the 15 June 1991 solar flare, Astronomy and Astrophysics, 340, 257-264, 1998
22.  
L. Kocharov, R. Vainio, J. Torsti, and G.A. Kovaltsov, Adiabatic deceleration of solar energetic particles as deducted from Monte Carlo simulations of interplanetary transport, Solar Physics, 182, 195-215, 1998
21.  
A. Anttila, L.G. Kocharov, J. Torsti, and R. Vainio, Long-duration high-energy proton events observed by GOES in October 1989, Annales Geophysicae, 16, 921-930, 1998
20.  
P. Mäkelä, J. Torsti, M. Teittinen, E.Valtonen, E. Riihonen, and F. Ipavich, Observations of galactic cosmic ray modulation during Earth-directed coronal mass ejections, Geophysical Research Letters, 25, 2951-2954, 1998
19.  
J. Torsti, A. Anttila, L. Kocharov, P. Mäkelä, E. Riihonen, T. Sahla, M. Teittinen, E. Valtonen, T. Laitinen, and R. Vainio, Energetic (1 to 50 MeV) protons associated with Earth-directed coronal mass ejections, Geophysical Research Letters, 25, 2525-2528, 1998
18.  
R. Vainio and R. Schlickeiser, Alfven wave transmission and particle acceleration in parallel shock waves, Astronomy and Astrophysics, 331, 793-799, 1998
17.  
E. Valtonen, J.Peltonen, T.Eronen, M.Louhola, M.Lumme, E.Riihonen, M.Teittinen, and J. Torsti, Specialized detector techniques and electronics of the ERNE instrument on-board SOHO, Nuclear Physics B, 61B, 6-11, 1998
16.  
L.G. Kocharov, J. Torsti, T. Laitinen, and R. Vainio, Implications of proton anisotropy development observed by ERNE instrument during the 9 July 1996 solar particle event, Solar Physics, 175, 785-795, 1997
15.  
J. Torsti, T. Laitinen, R. Vainio, L. Kocharov, A. Anttila, and E. Valtonen, Recurrence of energetic particle flux anisotropy as observed by ERNE on July 9 1996, Solar Physics, 175, 771-784, 1997
14.  
J. Torsti, E. Valtonen, E. Riihonen, M. Teittinen, A.Anttila, R. Vainio, P. Mäkelä, T. Eronen, T. Laitinen, and G. Schultz, ERNE observations of energetic particle fluxes, Advances in Space Research, 20, (1)91-(1)98, 1997
13.  
E. Valtonen, J. Peltonen, P. Peltonen, T. Eronen, E. Hoisko, M. Louhola, M. Lumme, A. Nieminen, E. Riihonen, M. Teittinen, J. Torsti, K. Ahola, C. Holmlund, V. Kelhä, K. Leppälä, P. Ruuska, E. Strömmer, R. Verkasalo, E. Koivula, and M. Moilanen, Energetic and Relativistic Nuclei and Electron experiment of the SOHO mission, Nuclear Instruments and Methods in Physics Research A, 391, 249-268, 1997
12.  
L.G.Kocharov, J.Torsti, F.Tang, H.Zirin, G.A.Kovaltsov, and I.G.Usoskin, Impact of Magnetic Environment on the Generation of High-Energy Neutrons at the Sun, Solar Physics, 172, 271-278, 1997
11.  
J.Torsti, E.Valtonen, A.Anttila, R.Vainio, P.Mäkelä, E.Riihonen, and M.Teittinen, Anomalous Cosmic Ray Helium, Nitrogen and Oxygen Measurements by ERNE, Solar Physics, 170, 193-205, 1997
10.  
J.Torsti, E.Valtonen, E.Riihonen, L.Kocharov, R.Vainio, A.Anttila, T.Laitinen, M.Teittinen, and J.Kuusela, First Energetic Particle Events Observed with the ERNE Experiment, Solar Physics, 170, 179-191, 1997
9.  
L.G.Kocharov, J.Torsti, R.Vainio, G.A.Kovaltsov, and I.G.Usoskin, A Joint Analysis of High-Energy Neutrons and Neutron-Decay Protons From a Flare, Solar Physics, 169, 181-207, 1996
8.  
L.G. Kocharov, G.A. Kovaltsov, J. Torsti, H. Zirin, A. Anttila, I.G. Usoskin, and R. Vainio, The 1990 May 24 Solar Flare and Cosmic Ray Event, High Energy Solar Physics, (eds. R. Ramaty, N. Mandzhavidze, X.-M. Hua, American Institute of Physics Conference Proceedings, New York), -, 246-255, 1996
7.  
J.Torsti, A.Anttila, C.G.Schultz, and R.Vainio, Transport of Energetic Particles Derived from a Detailed Analysis of the September 29, 1989 Solar Flare, Advances in Space Research, 17, (4/5)163 - (4/5)166, 1996
6.  
J. Torsti, L.G. Kocharov, R. Vainio, A. Anttila, and G.A. Kovaltsov, The 1990 May 24 Solar Cosmic Ray Event, Solar Physics, 166, 135-158, 1996
5.  
J. Torsti, E. Valtonen, L. Kocharov, M. Lumme, T. Eronen, M. Louhola, E. Riihonen, G. Schultz, M. Teittinen, R. Vainio, A. Anttila, and J. Kuusela, Energetic Particle Investigation Using the ERNE Instrument, Annales Geophysicae, 14, 497-502, 1996
4.  
E. Riihonen, J. Torsti, A.Anttila, J. Kuusela, M. Lumme, and E. Valtonen, Performance of ERNE in Particle Flux Anisotropy Measurement, Annales Geophysicae, 14, 503-509, 1996
3.  
L.G. Kocharov, J. Torsti, R. Vainio, and G.A. Kovaltsov, Propagation of Solar Cosmic Rays: Diffusion Versus Focused Diffusion, Solar Physics, 165, 205-208, 1996
2.  
M.Lumme, E.Valtonen, T.Eronen, J.Torsti, M.Lewitowicz, and D.Bazin, Solar Energetic Particle Abundance Measurement by ERNE on Board SOHO, Advances in Space Research, 15, (7)73 - (7)76, 1995
1.  
J.Torsti, E.Valtonen, M.Lumme, P.Peltonen, T.Eronen, M.Louhola, E.Riihonen, G. Schultz, M.Teittinen, K.Ahola, C.Holmlund, V.Kelhä, K.Leppälä, P.Ruuska, and E.Strömmer, Energetic Particle Experiment ERNE, Solar Physics, 162, 505 - 531, 1995




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