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Umeå universitet
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Timo Pitkänen

Kontakt

E-post
timo.pitkanen@umu.se
Telefon
090-786 50 49

Verksam vid

Anknytning
Forskare vid Institutionen för fysik
Plats
Fysikhuset, plan 4, Linnaeus väg 24, FA410 Umeå universitet, 901 87 Umeå
2020
Reconstruction of Plasma Structure with Anisotropic Pressure: Application to Pc5 Compressional Wave
Astrophysical Journal, Institute of Physics Publishing (IOPP) 2020, Vol. 889, (1)
Tian, Anmin; Xiao, Kai; Degeling, Alexander William; et al.
2019
Oscillatory Flows in the Magnetotail Plasma Sheet: Cluster Observations of the Distribution Function
Journal of Geophysical Research - Space Physics, AMER GEOPHYSICAL UNION 2019, Vol. 124, (4) : 2736-2754
De Spiegeleer, Alexandre; Hamrin, Maria; Gunell, Herbert; et al.
2019
Oxygen Ion Flow Reversals in Earth's Magnetotail: A Cluster Statistical Study
Journal of Geophysical Research - Space Physics, Wiley-Blackwell 2019, Vol. 124, (11) : 8928-8942
De Spiegeleer, Alexandre; Hamrin, Maria; Volwerk, M.; et al.
2019
Can Reconnection be Triggered as a Solar Wind Directional Discontinuity Crosses the Bow Shock?: A Case of Asymmetric Reconnection
Journal of Geophysical Research - Space Physics, American Geophysical Union (AGU) 2019, Vol. 124, (11) : 8507-8523
Hamrin, Maria; Gunell, Herbert; Goncharov, Oleksandr; et al.
2019
IMF B-y Influence on Magnetospheric Convection in Earth's Magnetotail Plasma Sheet
Geophysical Research Letters, American Geophysical Union (AGU) 2019, Vol. 46, (21) : 11698-11708
Pitkänen, Timo; Kullen, A.; Laundal, K. M.; et al.
2018
Energy conversion in cometary atmospheres: Hybrid modeling of 67P/Churyumov-Gerasimenko
Astronomy and Astrophysics, EDP Sciences 2018, Vol. 616
Lindkvist, Jesper; Hamrin, Maria; Gunell, Herbert; et al.
2018
Convection electric field and plasma convection in a twisted magnetotail: t THEMIS case study 1-2 January 2009
Journal of Geophysical Research - Space Physics, American Geophysical Union (AGU) 2018, Vol. 123, (9) : 7486-7497
Pitkänen, Timo; Kullen, A.; Shi, Q. Q.; et al.
2017
Low-frequency oscillatory flow signatures and high-speed flows in the Earth's magnetotail
Journal of Geophysical Research - Space Physics, Washington: American Geophysical Union (AGU) 2017, Vol. 122, (7) : 7042-7056
De Spiegeleer, Alexandre; Hamrin, Maria; Pitkänen, Timo; et al.
2017
The Delayed Time Response of Geomagnetic Activity to the Solar Wind
Journal of Geophysical Research - Space Physics, AMER GEOPHYSICAL UNION 2017, Vol. 122, (11) : 109-127
Maggiolo, R.; Hamrin, Maria; De Keyser, J.; et al.
2017
On IMF By-induced dawn-dusk asymmetries in earthward convective fast flows
Dawn-dusk asymmetries in planetary plasma environments, American Geophysical Union (AGU) 2017 : 95-106
Pitkänen, Timo; Hamrin, Maria; Karlsson, Tomas; et al.
2017
Potential of Earth Orbiting Spacecraft Influenced by Meteoroid Hypervelocity Impacts
IEEE Transactions on Plasma Science, Vol. 45, (8) : 2048-2055
Vaverka, Jakub; Pellinen-Wannberg, Asta; Kero, Johan; et al.
2017
Detection of EMPs generated by meteoroid impacts on the MMS spacecraft and problems with signal interpretation
2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)
Vaverka, Jakub; Pellinen-Wannberg, Asta; Kero, Johan; et al.
2017
Detection of meteoroid hypervelocity impacts on the Cluster spacecraft: First results
Journal of Geophysical Research - Space Physics, Vol. 122, (6) : 6485-6494
Vaverka, Jakub; Pellinen-Wannberg, Asta; Kero, Johan; et al.
2017
Observations of kinetic-size magnetic holes in the magnetosheath
Journal of Geophysical Research - Space Physics, AMER GEOPHYSICAL UNION 2017, Vol. 122, (2) : 1990-2000
Yao, Shutao; Wang, X. G.; Shi, Q. Q.; et al.
2016
Oxygen ion response to proton bursty bulk flows
Journal of Geophysical Research - Space Physics, Vol. 121, (8) : 7535-7546
Nilsson, Hans; Hamrin, Maria; Pitkänen, Timo; et al.
2016
Response of magnetotail twisting to variations in IMF B-y: a THEMIS case study 1-2 January 2009
Geophysical Research Letters, Wiley-Blackwell 2016, Vol. 43, (15) : 7822-7830
Pitkänen, Timo; Hamrin, Maria; Kullen, A.; et al.
2016
Spacecraft potential influenced by meteoroid hypervelocity impacts
IEEE Transactions on Plasma Science
Vaverka, Jakub; Pellinen-Wannberg, Asta; Kero, Johan; et al.
2016
Propagation of small size magnetic holes in the magnetospheric plasma sheet
Journal of Geophysical Research - Space Physics, Wiley-Blackwell 2016, Vol. 121, (6) : 5510-5519
Yao, S. T.; Shi, Q. Q.; Li, Z. Y.; et al.
2015
The use of the power density for identifying reconnection regions
Journal of Geophysical Research - Space Physics, Vol. 120, (10) : 8644-8662
Hamrin, Maria; Andersson, L.; Vaivads, A.; et al.
2015
Magnetic forces associated with bursty bulk flows in Earth's magnetotail
Geophysical Research Letters, Vol. 42, (9) : 3122-3128
Karlsson, Tomas; Hamrin, Maria; Nilsson, Hans; et al.
2015
Azimuthal velocity shear within an Earthward fast flow: further evidence for magnetotail untwisting?
Annales Geophysicae, Vol. 33 : 245-255
Pitkänen, Timo; Hamrin, Maria; Norqvist, Patrik; et al.
2014
Evidence for the braking of flow bursts as they propagate toward the Earth
Journal of Geophysical Research - Space Physics, Vol. 119, (11) : 9004-9018
Hamrin, Maria; Pitkänen, Timo; Norqvist, Patrik; et al.
2013
IMF effect on the polar cap contraction and expansion during a period of substorms
Annales Geophysicae, Vol. 31 : 1021-1034
Aikio, Anita T.; Pitkänen, Timo; Honkonen, Ilja; et al.
2013
IMF effect on the polar cap contraction and expansion during a period of substorms
Annales Geophysicae, Vol. 31 : 1021-1034
Aikio, Anita T.; Pitkänen, Timo; Honkonen, Ilja; et al.
2013
A reexamination of latitudinal limits of substorm-produced energetic electron precipitation
Journal of Geophysical Research - Space Physics, Vol. 118 : 6694-6705
Cresswell-Moorcock, Kathy; Rodger, Craig J.; Kero, Antti; et al.
2013
The evolution of flux pileup regions in the plasma sheet: Cluster observations
Journal of Geophysical Research - Space Physics, American Geophysical Union (AGU) 2013, Vol. 118, (10) : 6279-6290
Hamrin, Maria; Norqvist, Patrik; Karlsson, T.; et al.
2013
Ionospheric signatures of a plasma sheet rebound flow during a substorm onset
Journal of Geophysical Research - Space Physics, Vol. 118 : 350-363
Juusola, Liisa; Kubyshkina, Marina; Nakamura, Rumi; et al.
2013
Observations of polar cap flow channel and plasma sheet flow bursts during substorm expansion
Journal of Geophysical Research - Space Physics, Vol. 118 : 774-784
Pitkänen, Timo; Aikio, Anita T.; Juusola, Liisa
2013
IMF dependence of the azimuthal direction of earthward magnetotail fast flows
Geophysical Research Letters, American Geophysical Union (AGU) 2013, Vol. 40, (21) : 5598-5604
Pitkänen, Timo; Hamrin, Maria; Norqvist, Patrik; et al.
2011
EISCAT-Cluster observations of quiet-time near-Earth magnetotail fast flows and their signatures in the ionosphere
Annales Geophysicae, Vol. 29 : 299-319
Pitkänen, Timo; Aikio, Anita T.; Amm, Olaf; et al.
2010
Comparison of the open-closed field line boundary location inferred using IMAGE-FUV SI12 images and EISCAT radar observations
Annales Geophysicae, Vol. 28 : 883-892
Hubert, Benoit; Aikio, Anita T.; Amm, Olaf; et al.
2010
Comparison of the open-closed field line boundary location inferred using IMAGE-FUV SI12 images and EISCAT radar observations
Annales Geophysicae, Copernicus Publications 2010, Vol. 28 : 883-892
Hubert, Benoit; Aikio, Anita T.; Amm, Olaf; et al.
2010
Conjugate EISCAT-Cluster observations of quiet-time near-Earth magnetotail fast flows and their signatures in the ionosphere
URSI Finnish XXXII Convention on Radio Science and Electromagnetism 2010 meeting, Oulu, Finland, 26 August 2010
Pitkänen, Timo; Aikio, Anita T.; Amm, Olaf; et al.
2009
Nordic ionospheric sounding rocket seeding experiment (NISSE)
Proc. 19th ESA Symposium on European Rocket and Balloon Programmes and Related Research, Bad Reichenhall, Germany, 7-11 June 2009 : 467-472
Hølland, Vidar; Pitkänen, Timo; Baumann, Gisela; et al.
2009
Nordic ionospheric sounding rocket seeding experiment (NISSE)
Proc. 19th ESA Symposium on European Rocket and Balloon Programmes and Related Research, Bad Reichenhall, Germany, 7-11 June 2009 : 467-472
Hølland, Vidar; Pitkänen, Timo; Baumann, Gisela; et al.
2009
Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm
Annales Geophysicae, Vol. 27 : 2157-2171
Pitkänen, Timo; Aikio, Anita T.; Kozlovsky, Alexander; et al.
2009
Corrigendum to “Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm” published in Ann. Geophys., 27, 2157-2171, 2009
Annales Geophysicae, Vol. 27 : 3007-3007
Pitkänen, Timo; Aikio, Anita T.; Kozlovsky, Alexander; et al.
2009
Reconnection electric field estimates and dynamics of high-latitude boundaries during a substorm
Annales Geophysicae, Copernicus Publications 2009, Vol. 27 : 2157-2171
Pitkänen, Timo; Aikio, Anita T.; Kozlovsky, Alexander; et al.
2008
EISCAT and Cluster observations in the vicinity of the dynamical polar cap boundary
Annales Geophysicae, Vol. 26 : 87-105
Aikio, Anita T.; Pitkänen, Timo; Fontaine, Dominic; et al.
2008
EISCAT and Cluster observations in the vicinity of the dynamical polar cap boundary
Annales Geophysicae, Copernicus Publications 2008, Vol. 26 : 87-105
Aikio, Anita T.; Pitkänen, Timo; Fontaine, Dominic; et al.
2006
Method to locate the polar cap boundary in the nightside ionosphere and application to a substorm event
Annales Geophysicae, Vol. 24 : 1905-1917
Aikio, Anita T.; Pitkänen, Timo; Kozlovsky, Alexander; et al.
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Gruppmedlem
Rymdplasmafysik