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  • 1.
    Bellan, PM
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Stasiewicz, K
    Fine-scale cavitation of ionospheric plasma caused by inertial Alfven wave ponderomotive force1998In: PHYSICAL REVIEW LETTERS, ISSN 0031-9007, Vol. 80, no 16, p. 3523-3526Article in journal (Refereed)
    Abstract [en]

    Deep, very narrow magnetic-field-aligned density depletions were observed by the Freja spacecraft during auroral oval crossings. These cavities have perpendicular width of the order of the Electron skin depth c/omega(pe) and are associated with low-freque

  • 2.
    Blagoveshchenskaya, N.F., Kornienko, V.A., Rietveld, M.T., Thidé, B., Brekke, A., Moskvin, I.V., Nodrachev, S.
    Uppsala University, Department of Medical Pharmacology.
    Stimulated emissions around second harmonic of Tromsø heater frequency observed by long-distance diagnostic HF tools1998In: Geophysical Research Letters, Vol. 25, p. 863-876Article in journal (Refereed)
  • 3.
    Brandstrom, BUE
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Leyser, TB
    Steen, A
    Rietveld, MT
    Gustavsson, B
    Aso, T
    Ejiri, M
    Unambiguous evidence of HF pump-enhanced airglow at auroral latitudes1999In: GEOPHYSICAL RESEARCH LETTERS, ISSN 0094-8276, Vol. 26, no 23, p. 3561-3564Article in journal (Refereed)
    Abstract [en]

    Simultaneous observations by up to three low-light imaging stations belonging to the Auroral Large Imaging System (ALIS) have provided the first strong evidence of high-frequency (HF) pump-enhanced airglow at auroral latitudes. The airglow was enhanced by

  • 4.
    Carozzi, Tobia
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Karlsson, Roger
    Bergman, Jan
    Uppsala University, Department of Medical Pharmacology.
    Parameters Characterizing Electromagnetic Wave Polarization2000In: Physical Review E, ISSN 1063-651X, Vol. 61, p. 2024-2028Article in journal (Refereed)
    Abstract [en]

    In this paper, generalizations of the Stokes parameters and alternative characterizations of three-dimensional (3D) time-varying electromagnetic fields is introduced. One of these characteristics is the normal of the polarization plane, which, in many cas

  • 5.
    Eliasson, L., Andre_Matts, Lundin, R., Pottelette, R., Marklund, G. and Holmgren, G.
    Uppsala University, Department of Medical Pharmacology.
    Observations of electron conics by the Viking satellite.1996In: Journal-of-Geophysical-Research, Vol. 101, no A6, p. 13225-13238Article in journal (Refereed)
    Abstract [en]

    Electron angular distributions peaked at oblique angles to the magnetic field, electron conics, are frequently found in the Viking data at all magnetic local times, but with a maximum in the dusk sector. Several types of electron conics have been observed

  • 6.
    Eriksson Hans G., Wahlberg Christer
    Uppsala University, Department of Medical Pharmacology.
    Nonlinear stability analysis of external hydromagnetic modes in a tokamak1997In: PLASMA PHYSICS AND CONTROLLED FUSION, Vol. 39, p. 943-962Article in journal (Refereed)
  • 7.
    Erukhimov, L. M., Mityakov, N. A., Thidé, B.
    Uppsala University, Department of Medical Pharmacology.
    On the Action of Powerful Radio Emission on the Ionosphere in the Region of the Geomagnetic Equatorn he Region of the Geomagnetic Equator1997In: Radiophysics and Quantum Electronics, Vol. 40, p. 250-262Article in journal (Refereed)
  • 8.
    Erukhimov, Lev M., Goodman, Simon, Thidé, Bo
    Uppsala University, Department of Medical Pharmacology.
    On the dependence of the cutoff in upshifted SEE1995In: Radiophysics and Quantum Electronics, Vol. 37, p. 436-437Article in journal (Refereed)
  • 9.
    Frolov, V.L., Erukhimov, L.M., Komrakov, G.P., Sergeev, E.N., Thidé, B., Bernhardt, P. Wagner, L.S., Goldstein, J.A., Selcher, G.
    Uppsala University, Department of Medical Pharmacology.
    On the Enhancement of the BUM SEE Feature by Additional Pulse Heating of the onospheric Plasma1997In: Radiophysics and Quantum Electronics, Vol. 40, p. 371-386Article in journal (Refereed)
  • 10.
    Frolov, V.L., Grach, S.M., Erukhimov, L.M., Komrakov, G.P., Sergeev, E.N., Thidé, B., Carozzi, T.
    Uppsala University, Department of Medical Pharmacology.
    Investigation of the Temporal Evolution of the Broad Upshifted Maximum (BUM)1996In: Radiophysics and Quantum Electronics, Vol. 39, p. 241-254Article in journal (Refereed)
  • 11.
    Frolov, V.L., Grach, S.M., Erukhimov, L.M., Komrakov, G.P., Sergeev, E.N., Thidé, B., Carozzi, T.
    Uppsala University, Department of Medical Pharmacology.
    Peculiarities in the Evolution of the BUM of Stimulated Radio Emission of the Ionosphere1996In: Radiophysics and Quantum Electronics, Vol. 39, p. 352-371Article in journal (Refereed)
  • 12.
    Grach, SM
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Komrakov, GP
    Yurishchev, MA
    Thide, B
    Leyser, TB
    Carozzi, T
    Multifrequency Doppler radar observations of electron gyroharmonic effects during electromagnetic pumping of the ionosphere1997In: PHYSICAL REVIEW LETTERS, ISSN 0031-9007, Vol. 78, no 5, p. 883-886Article in journal (Refereed)
    Abstract [en]

    Experimental results of multifrequency HF Doppler radar studies during electromagnetic pumping of the ionosphere from the ground are reported. The Doppler shifts of the radar waves after turn-on of the vertically injected HF pump wave depend on the pump f

  • 13.
    Gustafsson, G
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Bostrom, R
    Holback, B
    Holmgren, G
    Lundgren, A
    Stasiewicz, K
    Ahlen, L
    Mozer, FS
    Pankow, D
    Harvey, P
    Berg, P
    Ulrich, R
    Pedersen, A
    Schmidt, R
    Butler, A
    Fransen, AWC
    Klinge, D
    Thomsen, M
    Falthammar, CG
    Lindqvist, PA
    Christenson, S
    Holtet, J
    Lyb,
    The electric field and wave experiment for the Cluster mission1997In: SPACE SCIENCE REVIEWS, ISSN 0038-6308, Vol. 79, no 1-2, p. 137-156Article in journal (Refereed)
    Abstract [en]

    The electric-field and wave experiment (EFW) on Cluster is designed to measure the electric-field and density fluctuations with sampling rates up to 36 000 samples s(-1). Langmuir probe sweeps can also be made to determine the electron density and tempera

  • 14.
    Isham, B., Hagfors, T., Mishin, E., Rietveld, M.T., LaHoz, C., Kofman, W., Leyser, T.B.
    Uppsala University, Department of Medical Pharmacology.
    A search for the location of the HF excitation of enhanced ion acourstic and Langmuir waves with EISCAT and the Tromsø heater1999In: Radiophysics and Quantum Electronics, Vol. 42, no 7, p. 607-618Article in journal (Refereed)
  • 15.
    Isham, B
    et al.
    Uppsala University, Department of Medical Pharmacology.
    La, Hoz C
    Rietveld, MT
    Hagfors, T
    Leyser, TB
    Cavitating Langmuir turbulence observed during high-latitude ionospheric wave interaction experiments1999In: PHYSICAL REVIEW LETTERS, ISSN 0031-9007, Vol. 83, no 13, p. 2576-2579Article in journal (Refereed)
    Abstract [en]

    Incoherent scatter radar data obtained during high power radio wave ionospheric interaction experiments performed in northern Scandinavia show an induced spectral line at the O-mode pump frequency simultaneous with strong enhancements at the natural Langm

  • 16.
    Isham, B., LaHoz, C., Rietveld, M.T., Hagfors, T., Leyser, T.B.
    Uppsala University, Department of Medical Pharmacology.
    Cavitating Langmuir Turbulence Observed during High-Latitude Ionospheric Wave Interaction Experiments1999In: Physical Review Letters, Vol. 83, p. 2576-2579Article in journal (Refereed)
  • 17.
    Isham, B., Rietveld, M.T., Hagfors, T., LaHoz, C., Mishin, E., Kofman, W., Leyser, T.B., van Eyken, A.P
    Uppsala University, Department of Medical Pharmacology.
    Aspect Angle Dependence of HF Enhanced Incoherent Backscatter1999In: Advances of Space Research, Vol. 24, p. 10081-10087Article in journal (Refereed)
  • 18.
    Istomin, Ya.N., Leyser, T.B.
    Uppsala University, Department of Medical Pharmacology.
    Quantization of Plasma Density Irregularities Under the Action of a PowerfulElectromagnetic Wave1999In: Radiophysics and Quantum Electronics, Vol. 42, no 7, p. 641-650Article in journal (Refereed)
  • 19.
    Istomin, YN
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Leyser, TB
    Parametric interaction of self-localized upper hybrid states in quantized plasma density irregularities1998In: PHYSICS OF PLASMAS, ISSN 1070-664X, Vol. 5, no 4, p. 921-931Article in journal (Refereed)
    Abstract [en]

    A theoretical model of the interaction between slow transport and rapid ponderomotive processes of upper hybrid (UH) oscillations driven by a homogeneous pump electric held is presented. The self-localization of UH oscillations in quantized plasma density

  • 20.
    Istomin, YN
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Leyser, TB
    Small-scale magnetic field-aligned density irregularities excited by a powerful electromagnetic wave1997In: PHYSICS OF PLASMAS, ISSN 1070-664X, Vol. 4, no 3, p. 817-828Article in journal (Refereed)
    Abstract [en]

    A set of equations describing the evolution of diffusive plasma density and temperature perturbations, and upper hybrid waves, coupled by a dipole electromagnetic pump field is derived. For the first time, instability from infinitesimal perturbations (sof

  • 21.
    Khotyaintsev, Y
    et al.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Stasiewicz, K
    Department of Physics and Astronomy.
    Berthomier, M
    Ivchenko, N
    Electron Energization by Alfvén Waves: Freja and Sounding Rocket Observations2000In: Physica Scripta, ISSN 0281-1847, Vol. T84, p. 151-Article in journal (Refereed)
    Abstract [en]

    An alternative form of the nonrelativistic permittivity tensor for a homogeneous magnetized plasma in thermal equilibrium is derived in the linear approximation. The derivation follows the lines of Trubnikov's derivation of the relativistic permittivity t

  • 22.
    Kjeldsen, Frank
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Materials Science. Department of Engineering Sciences, Ion Physics. Ion physics.
    Silivra, Oleg A
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Materials Science. Department of Engineering Sciences, Ion Physics. Ion physics.
    Ivonin, Igor A
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Materials Science. Department of Medical Pharmacology. Department of Engineering Sciences, Ion Physics. Ion physics.
    Haselmann, Kim F
    Gorshkov, Mikhail
    Zubarev, Roman A
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Materials Science. Department of Engineering Sciences, Ion Physics. Ion physics.
    C alpha-C backbone fragmentation dominates in electron detachment dissociation of gas-phase polypeptide polyanions.2005In: Chemistry, ISSN 0947-6539, Vol. 11, no 6, p. 1803-12Article in journal (Refereed)
  • 23.
    Ponomarenko, PV
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Leyser, TB
    Thidé, B
    New electron gyroharmonic effects in HF scatter from pump-excited magnetic field-aligned ionospheric irregularities1999In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, ISSN 0148-0227, Vol. 104, no A5, p. 10081-10087Article in journal (Refereed)
    Abstract [en]

    Experimental results of resonant high-frequency (HF) scattering from small-scale geomagnetic field-aligned plasma irregularities excited by electromagnetic HF pumping of the ionospheric F region from the Sura radio facility in Russia are reported. These r

  • 24.
    Popielawska, B
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Stasiewicz, K
    Lindqvist, P-A
    Aparicio, B.
    An imprint of the quiet plasma sheet structure at the orbit of Viking1996In: ESA SP-389, 1996, Vol. SP-389, p. 133-139Conference paper (Other scientific)
  • 25.
    Risch, Tore
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Mathematics and Computer Science, Department of Information Technology. Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Computing Science. Datalogi.
    Ivanova, Milena
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Mathematics and Computer Science, Department of Information Technology. Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Computing Science. Datalogi.
    Thide, Bo
    Department of Medical Pharmacology. Faculty of Science and Technology, Biology, Department of Ecology and Evolution, Computing Science.
    High-performance GRID Database Manager for Scientific Data2002In: Workshop on Distributed Data & Structures - WDAS-2002, Paris, France, 2002Conference paper (Refereed)
  • 26.
    Rothkael, H
    et al.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Blecki, J
    Stasiewicz, K
    Ericsson, A.
    HF-VLF Plasma Waves Excitation During Geomagnetic Storm In The Polar Cusp Region2000In: ESA SP-449, 2000, Vol. SP-449, p. 331-334Conference paper (Other scientific)
  • 27.
    Rönnstrand, Lars
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    Arvidsson, Ann-Kristin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Pharmacology.
    Kallin, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    Rorsman, Charlotte
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    Hellman, Ulf
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    Engström, Ulla
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    Wernstedt, Christer
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    Heldin, Carl-Henrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , Ludwig Institute for Cancer Research.
    SHP-2 binds to Tyr763 and Tyr1009 in the PDGF β-receptor and mediates PDGF-induced activation of the Ras/MAP kinase pathway and chemotaxis1999In: Oncogene, ISSN 0950-9232, Vol. 18, no 25, p. 3696-3702Article in journal (Refereed)
    Abstract [en]

    Activation of the beta-receptor for platelet-derived growth factor (PDGF) by its ligand leads to autophosphorylation on a number of tyrosine residues. Here we show that Tyr763 in the kinase insert region is a novel autophosphorylation site, which after phosphorylation binds the protein tyrosine phosphatase SHP-2. SHP-2 has also previously been shown to bind to phosphorylated Tyr1009 in the PDGF beta-receptor. Porcine aortic endothelial (PAE) cells transfected with a PDGF beta-receptor in which Tyr763 and Tyr1009 were mutated to phenylalanine residues failed to associate with SHP-2 after ligand stimulation. Moreover, PDGF-BB-induced Ras GTP-loading and Erk2 activation were severely compromised in the receptor mutant. Whereas the mitogenic response to PDGF-BB remained at the same level as in cells expressing wild-type PDGF beta-receptor, chemotaxis induced by PDGF-BB was significantly decreased in the case of the Y763F/Y1009F mutant cells, suggesting an important role for SHP-2 in chemotactic signaling.

  • 28.
    Sandberg, I
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Pavlenko, VP
    Revenchuk, SM
    Outgoing and global drift waves in rotating toroidal plasma configuration1999In: PHYSICA SCRIPTA, ISSN 0281-1847, Vol. 60, no 5, p. 452-459Article in journal (Refereed)
    Abstract [en]

    The drift waves in rotating toroidal plasma are studied for an axisymmetric, large-aspect-ratio tokamak with concentric and circular magnetic surfaces. Plasma rotation is driven by the radial electrostatic field typical for the H confinement mode of plasm

  • 29.
    Sergeev, EN
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Frolov, VL
    Komrakov, GP
    Thidé, B
    Carozzi, T
    Temporal evolution of HF-excited plasma waves, measured at different pump frequencies by stimulated electromagnetic emission (SEE)1997In: JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, ISSN 1364-6826, Vol. 59, no 18, p. 2383-2400Article in journal (Refereed)
    Abstract [en]

    Experimental results concerning the growth and decay times of different spectral components of stimulated electromagnetic emission (SEE) are presented. A new method of measurement, employing a special pulsed pump scheme for the ionospheric plasma modifica

  • 30.
    Sergeev, E.N., Grach, S.M., Komrakov, G.P., Frolov, V.L., Stubbe, P., Thidé, B., Leyser, T.B., Carozzi, T.
    Uppsala University, Department of Medical Pharmacology.
    Influence of small-scale irregularities on characteris0tics of the overshoot effect in the temporal evolution of stimulated electromagnetic emission. Part II. Relaxation stage1999Article in journal (Refereed)
  • 31.
    Sergeev, E.N., Grach, S.M., Komrakov, G.P., Frolov, V.L., Stubbe, P., Thidé, B., Leyser, T.B., Carozzi, T.
    Uppsala University, Department of Medical Pharmacology.
    Influence of small-scale irregularities on characteristics of the overshoot effect in the temporal evolution of stimulated electromagnetic emission. Part I. Development stage1999Article in journal (Refereed)
  • 32.
    Sibeck, D
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Paschmann, G
    Treumann, R
    Fuselier, S
    Lennartsson, W
    Lockwood, M
    Lundin, R
    Ogilvie, K
    Onsager, T
    Phan, T
    Roth, M
    Scholer, M
    Scopke, N
    Stasiewicz, K
    Yamauchi, M
    Plasma transfer processes at the magnetopause1999In: Space Science Reviews, Vol. 88, no 1-2, p. 207-283Article, book review (Other scientific)
  • 33.
    Stasiewicz, K.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Orbit Visualization Tool-2 for CLUSTER-II2000In: WEB publicationOther (Other scientific)
  • 34.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Bellan, P
    Chaston, C
    Kletzing, C
    Lysak, R
    Maggs, J
    Pokhotelov, O
    Seyler, C
    Shukla, P
    Stenflo, L
    Streltsov, A
    Wahlund, J-E
    Small Scale Alfvenic structure in the aurora2000In: Space Science Reviews, ISSN 0038-6308, Vol. 92, no 3-4, p. 423-533Article in journal (Refereed)
    Abstract [en]

    This paper presents a comprehensive review of dispersive Alfven waves in space and laboratory plasmas. We start with linear properties of Alfven waves and show how the inclusion of ion gyroradius, parallel electron inertia, and finite frequency effects mo

  • 35.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Gustafsson, G
    Alfven waves and structures: What can we learn with multipoint measurements on CLUSTER II2000In: ESA SP-449, CLUSTER-II workshop, 2000, Vol. SP-449, p. 177-182Conference paper (Other scientific)
  • 36.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Gustafsson, G
    Marklund, G
    Lindqvist, PA
    Clemmons, J
    Zanetti, L
    Cavity resonators and Alfven resonance cones observed on Freja1997In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol. 102, no A2, p. 2565-2575Article in journal (Refereed)
    Abstract [en]

    Multiresolution wavelet analysis of magnetic field, electric field, and plasma density records taken on Freja during strong auroral events shows evidence for cavity Alfven resonators in the topside ionosphere. The cavity (or transverse) resonators consist

  • 37.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Holback, B
    Krasnoselskikh, V
    Boehm, M
    Bostrom, R
    Kintner, PM
    Parametric instabilities of Langmuir waves observed by Freja1996In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, ISSN 0148-0227, Vol. 101, no A10, p. 21515-21525Article in journal (Refereed)
    Abstract [en]

    We have analyzed complete spectrum of waves (0-4 MHz) and electron distributions during events of modulated Langmuir waves observed by Freja in the topside polar ionosphere. Modulated Langmuir waves are observed with amplitudes 1-1000 mV/m in association

  • 38.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Holmgren, G
    Zanetti, L
    Density depletions and current singularities observed by Freja1998In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol. 103, no A3, p. 4251-4260Article in journal (Refereed)
    Abstract [en]

    High time resolution data collected by the Freja spacecraft in the topside ionosphere (h similar to 1500 km) reveal that the "low-frequency turbulence" observed commonly below the ion gyrofrequency consists of a large number of coherent plasma structures

  • 39.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Khotyaintsev, Y
    Berthomier, M
    Wahlund, J-E
    Identification of widespread turbulence of dispersive Alfven waves2000In: Geophysical Research Letters, ISSN 0094-8276, Vol. 27, p. 173-176Article in journal (Refereed)
    Abstract [en]

    This paper presents a comprehensive review of dispersive Alfven waves in space and laboratory plasmas. We start with linear properties of Alfven waves and show how the inclusion of ion gyroradius, parallel electron inertia, and finite frequency effects mo

  • 40.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology. Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Astronomy and Space Physics.
    Lundin, R
    Marklund, G
    Stochastic ion heating by orbit chaotization on electroststic waves and nonlinear structures2000In: Physica Scripta, ISSN 0281-1847, Vol. T84, p. 60-63Article in journal (Refereed)
    Abstract [en]

    We demonstrate that satellite observations of intense transverse ion energization could be explained by stochastic ion heating on short perpendicular wavelength electrostatic waves and structures produced by the decay of dispersive Alfven waves (DAW) This

  • 41.
    Stasiewicz, K
    et al.
    Uppsala University, Department of Medical Pharmacology.
    Potemra, T
    Multiscale current structures observed by Freja1998In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol. 103, no A3, p. 4315-4325Article in journal (Refereed)
    Abstract [en]

    Multiscale structure of field-aligned currents and plasma density records are analyzed with multiresolution wavelet technique. We show that field-aligned currents measured by Freja in the auroral region have a spectrum of scales from similar to 500 km dow

  • 42.
    Thide, B
    Uppsala University, Department of Medical Pharmacology.
    Artificial modification of the ionosphere - Preface1997In: JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, Vol. 59, no 18, p. 2251-2252Other (Other scientific)
  • 43.
    THIDE, B
    et al.
    Uppsala University, Department of Medical Pharmacology.
    DJUTH, FT
    LEYSER, TB
    IERKIC, HM
    EVOLUTION OF LANGMUIR TURBULENCE AND STIMULATED ELECTROMAGNETIC EMISSIONS EXCITED WITH A 3-MHZ PUMP WAVE AT ARECIBO1995In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, ISSN 0148-0227, Vol. 100, no A12, p. 23887-23899Article in journal (Refereed)
    Abstract [en]

    We present the results of a comparative experimental study at Arecibo of the initial temporal development of stimulated electromagnetic emissions (SEE) and HF-enhanced plasma lines (HFPLs) excited in the ionospheric F region by a high-power O mode radio w

  • 44.
    Tjulin, Anders
    Uppsala University, Department of Medical Pharmacology.
    Kinetic theory of waves in plasmas with simple-pole distributions1999Other (Other scientific)
  • 45.
    Tjulin, Anders
    Uppsala University, Department of Medical Pharmacology.
    Using simple-pole distribution functions for calculations in kinetic theory of waves in a plasma1999In: Journal of Technical Physics, Warszawa; Institute of Fundamental Technological Research , 1999, Vol. 40, no 1, p. 25-28Conference paper (Refereed)
    Abstract [en]

    If simple-pole distribution functions are introduced, it is possible to calculate dispersion relations in many plasmas in a rather simple way, using the residue theorem of complex analysis to evaluate integrals. The simple-pole distribution functions are

  • 46.
    Vaivads, A., Ronnmark, K. and Andre_M.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Pharmacology.
    Generation of ion acoustic waves by fan instability.1995In: Journal-of-Geophysical-Research, Vol. 100, no A10, p. 19435-19440Article in journal (Other academic)
    Abstract [en]

    Considers a fan instability as a possible source of oblique ion acoustic waves generated by ion beams above the auroral acceleration region. The model includes a homogeneous plasma with protons as the only ion component. The ion distribution has a suprath

  • 47.
    Wahlberg, Christer
    Uppsala University, Department of Medical Pharmacology.
    A comparison of compressible and incompressible magnetohydrodynamics in toroidal plasmas1996In: PHYSICS OF PLASMAS, Vol. 3, p. 1619-1627Article in journal (Refereed)
  • 48.
    Wahlberg, Christer
    Uppsala University, Department of Medical Pharmacology.
    Analytical stability condition for the ideal m=n=1 kink mode in a toroidal plasma with elliptic cross section1998In: PHYSICS OF PLASMAS, ISSN 1070-664X, Vol. 5, no 5, p. 1387-1402Article in journal (Refereed)
    Abstract [en]

    An analytical stability condition for the ideal kink mode with toroidal mode number n=1 and (dominating) poloidal mode number m=1 in a toroidal plasma with elliptic cross section in derived from a large aspect ratio expansion of the ideal magnetohydrodyna

  • 49.
    Wahlberg, Christer
    Uppsala University, Department of Medical Pharmacology.
    Structure of the compressible MHD equations for the internal kink mode in a toroidal plasma with large aspect ratio1999In: JOURNAL OF PLASMA PHYSICS, ISSN 0022-3778, Vol. 62, p. 165-178Article in journal (Refereed)
    Abstract [en]

    The equations for the ideal, internal m = n = 1 kink mode in a toroidal plasma are derived from a direct, large-aspect-ratio perturbation expansion of the compressible magnetohydrodynamic (MHD) equations. The derivation complements earlier investigations

  • 50.
    Wahlberg Christer, Bondeson Anders
    Uppsala University, Department of Medical Pharmacology.
    Stability analysis of the m = n = 1 kink mode in toroidal geometry by direct expansion of the hydromagnetic equations1997In: JOURNAL OF PLASMA PHYSICS, Vol. 57, p. 327-341Article in journal (Refereed)
12 1 - 50 of 51
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