Timo Pitkänen

Forskare vid Institutionen för fysik

timo.pitkanen@umu.se

Fysikhuset, plan 4, Linnaeus väg 24, - Umeå universitet, 901 87 Umeå

Senaste publikationer

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.

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.

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.

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

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

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.

2017

On IMF B_y-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

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.

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

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.

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.

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.

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

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.

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

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

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.

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

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

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.

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

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

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

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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Timo Pitkänen

Senaste publikationer