pes

Bilde av person
Kan ikke hente personopplysninger fra ekstern kilde

Faglige interesser

Solvind - magnetosfære - ionosfære kobling med vekt på observasjoner av nordlys (dagnordlys og nattnordlys fenomener), plasma konveksjon  og

Birkeland-strømmer i samband med ekstemt romvær, dvs. passasje av interplanetariske magnetskyer som er initiert av solstormer (CMEs). 

Bakgrunn

Cand.real.  Fysisk institutt, UiO 1978. Vit. ass. UiT 1879-1981. Dr. scient. UiO 1982. 1 Amanuensis, UiO 1985-1993. Professor Fysisk institutt, UiO 1993-. 

 

Publikasjoner

  • Sandholt, Per Even; Farrugia, C. J. & Denig, W. F. (2015). Transitions between states of magnetotail-ionosphere coupling and the role of solar wind dynamic pressure: The 25 July 2004 interplanetary CME case. Annales Geophysicae.  ISSN 0992-7689.  33(4), s 427- 436 . doi: 10.5194/angeo-33-427-2015
  • Muzamil, Fathima Muzleena; Farrugia, Charlie J.; Torbert, Roy B.; Pritchett, Philip R.; Mozer, Forrest S.; Scudder, Jack D.; Russell, Christopher T.; Sandholt, Per Even; Denig, William F. & Wilson, Lynn B. (2014). Structure of a reconnection layer poleward of the cusp: Extreme density asymmetry and a guide field. Journal of Geophysical Research - Biogeosciences.  ISSN 2169-8953.  119(9), s 7343- 7362 . doi: 10.1002/2014JA019879
  • Sandholt, Per Even; Farrugia, Charles J. & Denig, William F. (2014). M-I coupling across the auroral oval at dusk and midnight: repetitive substorm activity driven by interplanetary coronal mass ejections(CMEs). Annales Geophysicae.  ISSN 0992-7689.  32(4), s 333- 351 . doi: 10.5194/angeo-32-333-2014
  • Sandholt, Per Even & Farrugia, Charlie (2014). Aspects of magnetosphere - ionosphere coupling in sawtooth substorms: a case study. Annales Geophysicae.  ISSN 0992-7689.  32(10), s 1277- 1291 . doi: 10.5194/angeo-32-1277-2014
  • Farrugia, C. J.; Erkaev, N. V.; Jordanova, VK; Lugaz, N.; Sandholt, Per Even; Mühlbachler, S. & Torbert, R. B. (2013). Features of the interaction of interplanetary coronal mass ejections/magnetic clouds with the Earth's magnetosphere. Journal of Atmospheric and Solar-Terrestrial Physics.  ISSN 1364-6826.  99, s 14- 26 . doi: 10.1016/j.jastp.2012.11.014
  • Andalsvik, Yngvild Linnea; Sandholt, Per Even & Farrugia, Charlie (2012). Substorms and polar cap convection: the 10 January 2004 interplanetary CME case. Annales Geophysicae.  ISSN 0992-7689.  30(1), s 67- 80 . doi: 10.5194/angeo-30-67-2012
  • Sandholt, Per Even; Andalsvik, Yngvild Linnea & Farrugia, C. J. (2012). The pulsed nature of the nightside contribution to polar cap convection: repetitive substorm activity under steady interplanetary driving. Annales Geophysicae.  ISSN 0992-7689.  30(10), s 1539- 1553 . doi: 10.5194/angeo-30-1539-2012
  • Sandholt, Per Even & Farrugia, C.J. (2012). Plasma flows, Birkeland currents and auroral forms in relation to the Svalgaard-Mansurov effect. Annales Geophysicae.  ISSN 0992-7689.  30(5), s 817- 830 . doi: 10.5194/angeo-30-817-2012
  • Andalsvik, Yngvild Linnea; Sandholt, Per Even & Farrugia, Charlie (2011). Dayside and nightside contributions to cross-polar cap potential variations: the 20 March 2001 ICME case. Annales Geophysicae.  ISSN 0992-7689.  29, s 2189- 2201 . doi: 10.5194/angeo-29-2189-2011
  • Siscoe, George L.; Farrugia, Charlie J. & Sandholt, Per Even (2011). Comparison between the two basic modes of magnetospheric convection. Journal of Geophysical Research - Space Physics.  ISSN 2169-9380.  116 . doi: 10.1029/2010JA015842
  • Sandholt, Per Even; Andalsvik, Yngvild Linnea & Farrugia, Charlie (2010). Polar cap convection/precipitation states during Earth passage of two ICMEs at solar minimum. Annales Geophysicae.  ISSN 0992-7689.  28(4), s 1023- 1042
  • Sandholt, Per Even; Andalsvik, Yngvild Linnea & Farrugia, Charlie (2010). Polar cap flow channel events: spontaneous and driven responses. Annales Geophysicae.  ISSN 0992-7689.  28(11), s 2015- 2025 . doi: 10.5194/angeo-28-2015-2010
  • Farrugia, Charlie; Erkaev, N. V.; Maynard, N. C.; Richardson, I. G.; Sandholt, Per Even; Langmayr, D; Ogilvie, KW; Szabo, A; Taubenschuss, U; Torbert, RB & Biernat, HK (2009). Effects on the distant geomagnetic tail of a fivefold density drop in the inner sheath region of a magnetic cloud: A joint Wind-ACE study. Advances in Space Research.  ISSN 0273-1177.  44(11), s 1288- 1294 . doi: 10.1016/j.asr.2009.07.003
  • Sandholt, Per Even & Farrugia, Charlie (2009). Plasma flow channels at the dawn/dusk polar cap boundaries: momentum transfer on old open field lines and the roles of IMF B-y and conductivity gradients. Annales Geophysicae.  ISSN 0992-7689.  27(4), s 1527- 1554
  • Farrugia, CJ; Gratton, FT; Lund, EJ; Sandholt, Per Even; Cowley, SWH; Torbert, RB; Gnavi, G; Mann, IR; Bilbao, L; Mouikis, C; Kistler, L; Smith, CW; Singer, HJ & Watermann, JF (2008). Two-stage oscillatory response of the magnetopause to a tangential discontinuity/vortex sheet followed by northward IMF: Cluster observations. Journal of Geophysical Research.  ISSN 0148-0227.  113 . doi: 10.1029/2007JA012800
  • Lund, Eric; Farrugia, Charlie & Sandholt, Per Even (2008). Momentum transfer at the high-latitude magnetopause and boundary layers. Annales Geophysicae.  ISSN 0992-7689.  26, s 2449- 2458
  • Sandholt, Per Even & Farrugia, Charlie (2008). Polar observations of ion/electron bursts at the pre-dawn polar cap boundary: Evidence for internal reconnection of overdraped lobe flux. Annales Geophysicae.  ISSN 0992-7689.  26, s 2191- 2202
  • Sandholt, Per Even & Farrugia, Charlie (2008). The role of external triggers in flow shear arcs in the dayside aurora. Annales Geophysicae.  ISSN 0992-7689.  26, s 2159- 2177
  • Vorobjev, V.G.; Kornilov, I.A.; Kornilova, T.A.; Yagodkina, O.I.; Sandholt, Per Even & Lybekk, Bjørn (2008). Nighttime subvisual high-latitude auroras. Geomagnetism and Aeronomy.  ISSN 0016-7932.  48(5), s 606- 614 . doi: 10.1134/S0016793208050058
  • Farrugia, CJ; Grocott, A; Sandholt, Per Even; Cowley, SWH; Miyoshi, Y; Rich, FJ; Jordanova, VK; Torbert, RB & Sharma, A (2007). The magnetosphere under weak solar wind forcing. Annales Geophysicae.  ISSN 0992-7689.  25
  • Sandholt, Per Even & Farrugia, C. J. (2007). Role of poleward moving auroral forms in the dawn-dusk auroral precipitation asymmetries induced by IMF B-y. Journal of Geophysical Research.  ISSN 0148-0227.  112(A04203) . doi: 10.1029/2006JA011952
  • Sandholt, Per Even & Farrugia, Charlie (2007). Poleward moving auroral forms (PMAFs) revisited: responses of aurorae, plasma convection and Birkeland currents in the pre- and postnoon sectors under positive and negative IMF B-y conditions. Annales Geophysicae.  ISSN 0992-7689.  25, s 1629- 1652
  • Lund, EJ; Farrugia, CJ; Sandholt, Per Even; Kistler, LM; Fairfield, DH; Gratton, FT; Cowley, SWH; Wild, JA; MoulkiS, CG; Dunlop, MW; Reme, H & Carlson, CW (2006). The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation. Advances in Space Research.  ISSN 0273-1177.  37, s 497- 500
  • Sandholt, Per Even; Dyrland, Margit & Farrugia, Charlie (2006). Dayside aurorae and polar arcs under south-east IMF orientation. Annales Geophysicae.  ISSN 0992-7689.  24, s 3421- 3432
  • Sandholt, Per Even; Farrugia, C. J.; Lund, E. J. & Denig, W. F. (2006). IMF By and the Spatio-Temporal Structure of the Dayside Aurora, In B. Tsurutani (ed.),  Recurrent Magnetic Storms: Corotating Solar Wind Streams.  American Geophysical Union (AGU).  ISBN 0-87590-432-7.  5.  s 213 - 233
  • Sandholt, Per Even & Farrugia, Charlie (2006). Spatiotemporal structure of the reconnecting magnetosphere under By-dominated interplanetary magnetic cloud conditions. Journal of Geophysical Research.  ISSN 0148-0227.  111 . doi: 10.1029/2005JA011514
  • Farrugia, Charles J.; Lund, E. J. & Sandholt, Per Even (2004). Pulsed flows at the high-altitude cusp poleward boundary, and associated ionospheric convection and particle signatures, during a CLUSTER - FAST - SuperDARN - Sondrestrom conjunction under a southwest IMF. Annales Geophysicae.  ISSN 0992-7689.  22, s 2891- 2905
  • Sandholt, Per Even; Farrugia, C. J. & Denig, W. F. (2004). Dayside aurora and the role of IMF vertical bar B-y vertical bar/vertical bar B-z vertical bar: Detailed morphology and response to magnetopause reconnection. Annales Geophysicae.  ISSN 0992-7689.  22, s 613- 628
  • Sandholt, Per Even; Farrugia, Charles J. & Denig, W. F. (2004). Dayside aurora and the role of IMF |By/Bz|: detailed morphology and response to magnetopause reconnection. Annales Geophysicae.  ISSN 0992-7689.  22, s 613
  • Sandholt, Per Even; Farrugia, Charles J. & Denig, W. F. (2004). Detailed dayside auroral morphology as a function of local time for southeast IMF orientation: implications for solar wind- magnetosphere coupling. Annales Geophysicae.  ISSN 0992-7689.  22, s 3537- 3560
  • Farrugia, C. J.; Lund, E. J.; Sandholt, Per Even; Wild, JA; Cowley, SWH; Balogh, A; Mouikis, C; Mobius, E; Dunlop, MW; Bosqued, JM; Carlson, CW; Parks, GK; Cerisier, JC; Kelly, JD; Sauvaud, JA & Reme, H (2004). Pulsed flows at the high-altitude cusp poleward boundary, and associated ionospheric convection and particle signatures, during a Cluster-FAST-SuperDARN-Sondrestrom conjunction under a southwest IMF. Annales Geophysicae.  ISSN 0992-7689.  22, s 2891- 2905 . doi: 10.1029/2003JA010121
  • Farrugia, C.J.; Sandholt, Per Even; Torbert, R. B. & Østgaard, Nikolai (2004). Temporal and spatial aspects of the cusp inferred from local and global ground- and space-based observations in a case study. Journal of Geophysical Research.  ISSN 0148-0227.  109, s art. no.- A04209 . doi: 10.1029/2003JA010121
  • Khan, Hina; Lester, M.; Davies, J. A.; Milan, Steve & Sandholt, Per Even (2004). Multi-instrument study of the dynamic cusp during dominant IMF B-y conditions. Annales Geophysicae.  ISSN 0992-7689.  21, s 693- 708
  • Farrugia, Charles J. & Sandholt, Per Even (2003). Temporal variations in a four-sheet field-aligned current system and associated aurorae as observed during a Polar-ground magnetic conjunction in the midmorning sector. Journal of Geophysical Research.  ISSN 0148-0227.  109(A6)
  • Farrugia, Charles J.; Sandholt, Per Even; Maynard, Nelson; Torbert, Roy & Ober, Dan (2003). Temporal variations in a four-sheet field-aligned current system and associated aurorae as observed during a Polar-ground magnetic conjunction in the midmorning sector. Journal of Geophysical Research.  ISSN 0148-0227.  108(6)
  • Sandholt, Per Even (2003). Spontaneous and driven cusp dynamics: Optical aurora, particle precipitation, and plasma convection. Planetary and Space Science.  ISSN 0032-0633.  51, s 797- 812
  • Sandholt, Per Even; Moen, Jøran Idar & Farrugia, Charles J. (2003). Multi-site ground-based observations of the association between aurora and plasma convection in the cusp/polar cap during south-eastward (BY~|BZ|)IMF orientation. Annales Geophysicae.  ISSN 0992-7689.  21, s 539
  • Sandholt, Per Even; Moen, Jøran Idar; Farrugia, Charles J.; Cowley, Stanley W. H.; Lester, Mark; Milan, Steve; Valladares, C. E.; Denig, W. F. & Eriksson, S.V. (2003). Multi-site observations of the association between aurora and plasma convection in the cusp/polar cap during a south-eastward IMF orientation. Annales Geophysicae.  ISSN 0992-7689.  21, s 539
  • Sandholt, Per Even; Moen, Jøran Idar; Farrugia, CJ; Cowley, SWH; Lester, M; Milan, SE; Valladares, C; Denig, WF & Eriksson, S (2003). Multi-site observations of the association between aurora and plasma convection in the cusp/polar cap during a southeastward (B-y similar or equal to vertical bar B-z vertical bar) IMF orientation. Annales Geophysicae.  ISSN 0992-7689.  21, s 539- 558
  • Cowley, Stanley W. H.; Davies, J. A.; Grocott, A.; Khan, H.; Lester, Mark; McWilliams, K. A.; Milan, Steve; Provan, G.; Sandholt, Per Even; Wild, J. A. & Yeoman, T. K. (2003). Solar-wind-magnetosphere-ionosphere interactions in the Earth's plasma environment. Philosophical Transactions of the Royal Society of London. Biological Sciences.  ISSN 0962-8436.  361, s 113- 126
  • Sandholt, Per Even & Farrugia, Charles J. (2003). Does the aurora provide evidence for the occurrence of antiparallel magnetopause reconnection?. Journal of Geophysical Research.  ISSN 0148-0227.  108, s art. no.- 1466
  • Valladares, C. E.; Moen, Jøran Idar; Sandholt, Per Even; Denig, W. F. & Troshichev, O. (2002). Simultaneous observations of dayside aurora from Heiss Island and Ny-Ålesund. Geophysical Research Letters.  ISSN 0094-8276.  29(24)
  • Maynard, N. C.; Burke, W. J.; Moen, Jøran Idar; Sandholt, Per Even; Lester, M.; Ober, Dan; Weimer, D. R. & White, W. W. (2002). Bifurcation of the cusp: Implications for understanding boundary layers, Earth's Low latitude Boundary Layer. Geophysical Monograph.  ISSN 0065-8448.  s 219- 228
  • Sandholt, Per Even; Denig, W. F.; Farrugia, Charles J.; Lybekk, Bjørn & Trondsen, Espen (2002). Auroral structure at the cusp equatorward boundary: Relationship with the electron edge of low-latitude boundary layer precipitation. Journal of Geophysical Research.  ISSN 0148-0227.  107
  • Sandholt, Per Even & Farrugia, Charles J. (2002). Monitoring magnetosheath-magnetosphere interconnection topology from the aurora. Annales Geophysicae.  ISSN 0992-7689.  20, s 629- 637
  • Sandholt, Per Even; Farrugia, Charles J.; Lester, M.; Cowley, Stanley W. H.; Milan, Steve; Denig, W. F.; Lybekk, Bjørn; Trondsen, Espen & Vorobjev, V. (2002). Multi-stage substorm expansion: Auroral dynamics in relation to plasma sheet particle injection, precipitation, and plasma convection. Journal of Geophysical Research.  ISSN 0148-0227.  107
  • Sandholt, Per Even; Farrugia, Charles J.; Moen, Jøran Idar & Denig, W. F. (2002). The cusp in rapid transition. Journal of Geophysical Research.  ISSN 0148-0227.  107
  • Maynard, N. C.; Burke, W. J.; Sandholt, Per Even; Moen, Jøran Idar; M. Ober, D.; Lester, M.; R. Weimer, D. & Egeland, Alv (2001). Observations of simultaneous effects of merging in both hemispheres. Journal of Geophysical Research.  ISSN 0148-0227.  106, s 24551- 24577
  • Maynard, N. C.; Burke, W. J.; Sandholt, Per Even; Moen, Jøran Idar; Ober, Dan; Lester, M.; Weimer, D. R. & Egeland, Alv (2001). Observations of simultaneous effects of merging in both hemispheres. Journal of Geophysical Research.  ISSN 0148-0227.  106, s 24551- 24577
  • Moen, Jøran Idar; Carlson, Herbert C; Milan, Steve; Shumilov, N.; Lybekk, Bjørn; Sandholt, Per Even & Lester, M. (2001). On the collocation between dayside auroral activity and coherent HF backscatter. Annales Geophysicae.  ISSN 0992-7689.  18, s 1531- 1549
  • Moen, Jøran Idar; Sandholt, Per Even & Egeland, Alv (2001). Pre- and post-noon asymmetry in dayside auroral activity and convection related to solar wind-magnetosphere interactions. Advances in Space Research.  ISSN 0273-1177.  27, s 1363- 1372
  • Sandholt, Per Even; Farrugia, Charles J.; Cowley, Stanley W. H. & Lester, M. (2001). Dayside auroral bifurcation sequence during By-dominated interplanetary magnetic field: Relationship with merging and lobe convection cells. Journal of Geophysical Research.  ISSN 0148-0227.  106, s 15429- 15444
  • Sandholt, Per Even; Farrugia, Charles J.; Cowley, Stanley W. H.; Lester, M. & Cerisier, J.-C. (2001). Excitation of transient lobe cell convection and auroral arc at the cusp poleward boundary during transition of the interplanetary magnetic field from south to north. Annales Geophysicae.  ISSN 0992-7689.  19, s 487- 493
  • Farrugia, Charles J.; Sandholt, Per Even; Maynard, N. C.; Burke, W. J.; Scudder, J. D.; Ober, Dan; Moen, Jøran Idar & Russell, C. T. (2000). Pulsating mid-morning auroral arcs, filamentation of a mixing region in a flank boundary layer, and ULF pulsations during a POLAR - Svalbard conjunction. Journal of Geophysical Research.  ISSN 0148-0227.  105, s 27531
  • Sandholt, Per Even; Farrugia, Charles J.; Cowley, Stanley W. H.; Lester, M.; Denig, W. F.; Cerisier, J.-C.; Milan, Steve; Moen, Jøran Idar; Trondsen, Espen & Lybekk, Bjørn (2000). Dynamic cusp aurora and associated pulsed reverse convection during northward interplanetary magnetic field. Journal of Geophysical Research.  ISSN 0148-0227.  105, s 12869- 12894
  • Lyons, L.R.; Koskinen, H.E.J.; Blake, J. B.; Egeland, Alv; Hirahara, M.; Øieroset, Marit; Sandholt, Per Even & Shiokawa, K. (1999). Processes leading to plasma losses into the high-latitude atmosphere, In B. Hultqvist; Marit Øieroset; G. Paschmann & R. Treumann (ed.),  Space Science Reviews.  Kluwer Academic Publishers, Dordrecht, Holland.  s 85 - 135
  • Milan, Steve; Lester, M.; Cowley, Stanley W. H.; Moen, Jøran Idar; Sandholt, Per Even & Owen, Christine (1999). Meridian-scanning photometer, coherent HF radar, and magnetometer observations of the cusp: a case study. Annales Geophysicae.  ISSN 0992-7689.  17, s 159- 172
  • Sandholt, Per Even & Farrugia, Charles J. (1999). On the dynamic cusp aurora and IMF By. Journal of Geophysical Research.  ISSN 0148-0227.  104(A6), s 12461- 12472
  • Sandholt, Per Even; Farrugia, Charles J.; Cowley, Stanley W. H.; Denig, W. F.; Lester, M.; Moen, Jøran Idar & Lybekk, Bjørn (1999). Capture of magnetosheath plasma by the magnetosphere during northward IMF. Geophysical Research Letters.  ISSN 0094-8276.  26(18), s 2833- 2836
  • Sandholt, Per Even; Farrugia, Charles J.; Cowley, Stanley W. H.; Lester, M.; Moen, Jøran Idar; Lybekk, Bjørn & Trondsen, Espen (1999). Excitation and decay of magnetospheric lobe cell convection and its associated aurora. Geophysical Research Letters.  ISSN 0094-8276.  26, s 3597- 3601
  • Sandholt, Per Even; Farrugia, Charles J. & Lybekk, Bjørn (1999). The dynamic cusp aurora on Nov.30, 1997: Response to southward turning of the IMF. Annales Geophysicae.  ISSN 0992-7689.  17, s 1155- 1165
  • Sandholt, Per Even; Farrugia, Charles J.; Øieroset, Marit; Stauning, P. & Denig, W. F. (1998). Auroral Activity Associated with Unsteady Magnetospheric Erosion: Observations on December 18, 1990. Journal of Geophysical Research.  ISSN 0148-0227.  103, s 2309- 2317

Se alle arbeider i Cristin

  • Sandholt, Per Even; Carlson, Herbert C & Egeland, Alv (2002). Dayside and Polar Cap Aurora. Kluwer Academic Publishers, Dordrecht, Holland.  ISBN 1-4020-0447-8.  287 s.

Se alle arbeider i Cristin

  • Sandholt, Per Even; Farrugia, Charlie & Andalsvik, Yngvild Linnea (2009). Polar cap convection/precipitation states during Earth passage of two ICMEs at minimum of solar cycle 23.
  • Sandholt, Per Even & Farrugia, Charlie (2008). Plasma Flow Channels at Dawn/Dusk Polar Cap Boundaries: Momentum Transfer on old Open Field Lines and the Roles of IMF By and Conductivity Gradients.
  • Farrugia, Charlie; Sandholt, Per Even & Sharma, Arvind (2007). Wind - Polar - DMSP Study of Energetic Ion Bursts and Associated Electron Flux Enhancements During Passage of a Magnetic Cloud Sheath.
  • Lund, Eric; Farrugia, Charlie & Sandholt, Per Even (2007). Momentum transfer at the high-latitude magnetopause and boundary layers.
  • Sandholt, Per Even (2007). Dayside Aurora in Relation to Solar Wind - Magnetosphere - Ionosphere Coupling.
  • Sandholt, Per Even; Farrugia, Charlie & Sharma, Arvind (2007). Energetic ion bursts and associated electron flux enhancements during magnetic cloud passage: A WIND - POLAR - DMSP Study.
  • Farrugia, Charlie & Sandholt, Per Even (2006). Structure of the reconnecting magnetosphere under a strongly eastward-pointing IMF (with Bz < 0): Simultaneous observations in both hemispheres under near-equinox conditions.
  • Sandholt, Per Even & Farrugia, Charlie (2006). Response of aurorae, plasma convection and Birkeland currents to strong IMF By and negative Bz conditions.
  • Sandholt, Per Even & Farrugia, Charlie (2006). Spatiotemporal structure of the reconnecting magnetosphere.
  • Sandholt, Per Even; Farrugia, Charlie & Lund, Eric (2006). Space- and time variations of dayside aurora: Relationships with plasma convection channels and Birkeland currents.
  • Sandholt, Per Even; Farrugia, Charlie & Sharma, Arvind (2006). Polar-DMSP observations of enhanced polar rain and ion fluxes on old open flux tubes.
  • Lund, E. J.; Farrugia, C. J.; Sandholt, Per Even; Raeder, J & Larson, D. J. (2006). High Latitude Magnetosphere - Ionosphere Coupling as Seen by Multiple Spacecraft, Ground-Based Instruments, and Global MHD Models.
  • Sandholt, Per Even & Farrugia, Charlie (2006). Poleward moving auroral forms (PMAFs) revisited: Relationships with plasma convection, field-aligned currents, and the IMF By polarity.
  • Sandholt, Per Even & Farrugia, Charles J. (2005). Magnetosphere-ionosphere coupling initiated at the duskside boundary layer during impulsive IMF rotations.
  • Sandholt, Per Even & Farrugia, Charles J. (2005). Reconnection tailward of the cusp under IMF Bz negative conditions.
  • Pfaff, R.; Steigies, C.; Yeoman, T. K.; Milan, Steve; Lester, M.; Sandholt, Per Even; Oksavik, Kjellmar; Clemmons, J.; Knudsen, D. J. & Burchill, J. K. (2004). Combined sounding rocket and SuperDARN/EISCAT radar observations of plasma convection, shear, irregularities and other phenomena in the cusp and boundary layer during IMF Bz negative and By negative conditions.
  • Pfaff, R.; Steigies, C.; Acuna, M.; Freudenreich, H.; Yeoman, T. K.; Milan, Steve; Lester, M.; Sandholt, Per Even; Oksavik, Kjellmar; Moen, Jøran Idar; Clemmons, J.; Slocum, P.; Knudsen, D. J.; Burchill, J. K.; Coplan, M.; Gross, A.; Deferaudy, H.; Rezeau, L.; Fontaine, D.; Pincon, J.; Krasnosselskikh, V.; Delory, G. & Basu, S. (2003). Combined sounding rocket and SuperDARN/EISCAT radar observations of plasma convection, shear, irregularities and other phenomena in the cusp and boundary layer during IMF Bz negative and By negative conditions.
  • Sandholt, Per Even & Farrugia, Charles J. (2003). Solar ejecta and interplanetary magnetic clouds: Responses in the Earth's magnetosphere and Aurora Borealis. Nordic space activities.  ISSN 0805-7397.  11(3), s 9- 10
  • Deehr, C. S.; Sandholt, Per Even; Arnoldy, R.; Kintner, P.; Sigernes, F. & Lorentzen, D. (2002). Magnetospheric boundaries from sounding rocket and ground-based observations in the mid-morning aurora.
  • Farrugia, Charles J.; Sandholt, Per Even; Scudder, J. D.; Russell, C. T. & Torbert, R. B. (2002). Distant observations of pulsed reconnection signatures in the cusp, and cusp structure, using ground and space observations.
  • Sandholt, Per Even (2002). Multi-instrument studies of cusp structure and dynamics as a function of IMF orientation.
  • Sandholt, Per Even & Farrugia, Charles J. (2002). The aurora as monitor of magnetospheric boundary layer processes.
  • Sandholt, Per Even (2001). Nordlyset - En "dans" av elektriske strømmer i atmosfæren. Astronomi.  ISSN 0802-7587.  31, s 24- 27

Se alle arbeider i Cristin

Publisert 4. nov. 2010 12:34 - Sist endret 9. mars 2011 17:07