The University of Iowa Professor Jack Scudder Home Page

Welcome to The University of Iowa Website for Professor Jack D. Scudder.

University of Iowa, Dept. of Physics and Astronomy

Recent Planetary Magnetopause Collisionless Shocks Magnetic Reconnection Solar Wind Instrumentation

Magnetopause

Electron Observations in the Solar Wind and Magnetosheath, J. D. Scudder, D. L. Lind, K. W. OgilvieJGR 78, 28 6635(14pp), October 1, 1973Download in pdf format.
Polar Rain: Solar Coronal Electrons in the Earth's Magnetosphere, D. H. Fairfield and J. D. ScudderJGR 90, A5, 4055(14pp), May 1, 1985Download in pdf format.
Generalized Walen tests through Alfven waves and rotational discontinuities using electron flow velocities, J. D. Scudder, P. A. Puhl-Quinn, F. S. Mozer, K. W. Ogilvie, and C. T. RussellJGR 104, A9, 19,817(18pp), September 1, 1999Download in pdf format.
Electron temperature and de Hoffmann-Teller potential change across the Earth's box shock: New results from ISEE 1, A. J. Hull and J. D. Scudder, et al.JGR 105, A9, 20,957(15pp), September 1, 2000Download in pdf format.
Large amplitude, extremely rapid, predominantly perpendicular electric field structures at the magnetopause, F. S. Mozer, S. D. Bale, and J. D. ScudderGRL, 31, L15802, 2004Download in pdf format.
World line dependence of current sheet normals inferred by minimum variance techniques, J. D. Scudder and Z.-W. Ma, N. Omidi, P. Puhl-QuinnJGR, 110, A08201, 2005, doi:10.1029/2004JA010661.Download in pdf format.
Pc 1 waves and associated unstable distributions of magnetospheric protons observed during a solar wind pressure pulse, R. L. Arnoldy, M. J. Engebretson, R. E. Denton, J. L. Posch, M. R. Lessard, N. C. Maynard, D. M. Ober, C. J. Farrugia, C. T. Russell, J. D. Scudder,JGR, 110, A07229, 2005, doi:10.1029/2005JA011041.Download in pdf format.
Electron signatures of active merging sites on the magnetopause, N. C. Maynard, W. J. Burke, J. D. Scudder, D. M. Ober, D. R. Weimer, K. D. Siebert, C. T. Russell, M. Lester, F. S. Mozer, and N. SatoJGR, 110, A10207, doi:10,1029/2004JA010639, 2005Download in pdf format.
Interactions of the heliospheric current and plasma sheets with the bow shock: Cluster and Polar observations in the magnetosheath, Nelson C. Maynard, Charles J. Farrugia, William J. Burke, Daniel M. Ober, Jack D. Scudder, Forrest S. Mozer, Christopher T. Russell, Henri Rème, Christopher Mouikis, and Keith D. SiebertJGR 116, A01212, doi:10.1029/2010JA015872, 2011Download in pdf format.
First Resolved Observations of the Demagnetized Electron-Diffusion Region of an Astrophysical Magnetic-Reconnection Site, J. D. Scudder, R. D. Holdaway, W. S. Daughton, H. Karimabadi, V. Roytershteyn, C. T. Russell, and J. Y. LopezPRL 108, 225005 (2012)Download in pdf format.
Frozen Flux Violation, Electron Demagnetization and Magnetic Reconnection, J. D. Scudder, H. Karimabadi, W. Daughton and V. RoytershteynPhys. Plasmas, 22, 101204 (2015); doi:10.1063/1.4932332Download in pdf format.

SolarWind

THE CAUSE OF THE CORONAL TEMPERATURE INVERSION OF THE SOLAR ATMOSPHERE AND THE IMPLICATIONS FOR THE SOLAR WIND, J. D. SCUDDERNASA GSFC, CODE 692Download in pdf format.
Electron Observations in the Solar Wind and Magnetosheath, J. D. Scudder, D. L. Lind, K. W. OgilvieJGR 78, 28 6635(14pp), October 1, 1973Download in pdf format.
A Theory of Local and Global Processes Which Affect Solar Wind Electrons 2. Experimental Support, J. D. Scudder and Stanislaw OlbertJGR 84, A11, 6603(18pp), November 1, 1979Download in pdf format.
A Theory of Local and Global Processes Which Affect Solar Wind Electrons 1. The Origin of Typical 1 AU Velocity Distribution Functions--Steady State Theory, J. D. Scudder and Stanislaw OlbertJGR 84, A6, 2755(18pp), June 1, 1979Download in pdf format.
THE EFFECT OF A NON-MAXWELLIAN ELECTRON DISTRIBUTION ON OXYGEN AND IRON IONIZATION BALANCES IN THE SOLAR CORONA, S. P. Owocki, J. D. ScudderAp. J. 270,758(11pp), 1983 July 15Download in pdf format.
ON THE CAUSES OF TEMPERATURE CHANGE IN INHOMOGENEOUS LOW-DENSITY ASTROPHYSICAL PLASMAS, Jack D. ScudderAp. J., 398:299(20pp), 1992 October 10Download in pdf format.
Consequences of the large ambipolar electric field in the solar wind, J. D. ScudderIowa Univ., International Solar Wind 8 Conference, p. 37 06/1995 1995sowi.confR..37SDownload in pdf format.
Electron and ion temperature gradients and supra thermal tail strengths at Parker's solar wind critical point, J. D. ScudderJGR 101, A5, 11,039(15pp), May 1, 1996Download in pdf format.
Dreicer order ambipolar electric fields at Parker's steady state solar wind critical point, J. D. ScudderJGR 101, A6, 13,461(11pp), June 1, 1996Download in pdf format.
UBIQUITOUS NON-THERMALS IN ASTROPHYSICAL PLASMAS: RESTATING THE DIFFICULTY OF MAINTAINING MAXWELLIANS, J. D. Scudder and H. KarimabadiAp. J. 770:26(11pp), 2013 June 10; doi:10.1088/0004-637X/770/1/26Download in pdf format.
UBIQUITOUS NON-THERMALS IN ASTROPHYSICAL PLASMAS: RESTATING THE DIFFICULTY OF MAINTAINING MAXWELLIANS, J. D. Scudder and H. KarimabadiAp. J. 770:26(11pp), 2013 June 10Download in pdf format.
RADIAL VARIATION OF THE SOLAR WIND PROTON TEMPERATURE: HEAT FLOW OR ADDITION?, J. D. ScudderAp. J., 809(12pp), 2015 August 20Download in pdf format.
Steady Electron Runaway Model SERM: Astrophysical Alternative for the Maxwellian Assumption, J. D. ScudderAp. J. 885:138(10pp), 2019 November 10Download in pdf format.
The Long-standing Closure Crisis in Coronal Plasmas, J. D. ScudderAp. J. 885:148(13pp), 2019 November 10Download in pdf format.
The Thermal Force in Astrophysical Plasmas: Current Free Coulomb Friction, J. D. ScudderAp. J., 882:146(12pp), 2019 September 10Download in pdf format.

CollisionlessShocks

The Adiabatic Energy Change of Plasma Electrons and the Frame Dependence of the Cross-Shock Potential at Collisionless Magnetosonic Shock Waves, C. C. Goodrich, J. D. ScudderJGR 89, A8, 6654(9pp), August 1, 1984Download in pdf format.
A REVIEW OF THE PHYSICS OF ELECTRON HEATING AT COLLISIONLESS SHOCKS, J. D. ScudderAdv. Sp. Rev. 15, 8/9, 181(43pp), 1995Download in pdf format.
Geometry of magnetosonic shocks and plane-polarized waves: Coplanarity Variance Analysis (CVA), J. D. ScudderJGR, 110, A02202, 2005, doi:10.1029/2004JA010660.Download in pdf format.
Coherent structures, intermittent turbulence, and dissipation in high- temperature plasmas, H. Karimabadi, V. Roytershteyn, M. Wan, W. H. Matthaeus, W. Daughton et al.Phys. Plasmas 20, 012303 (2013); doi: 10.1063/1.4773205Download in pdf format.
The link between shocks, turbulence and magnetic reconnection in collisionless plasmas, H. Karimabadi, V. Roytershteyn, H. X. Vu, Y. Omelchenko, J. Scudder, W. Daughton, A. Dimmock, K. Nykyri, M. Wan, D. Sibeck, M. Tatineni, A. Majumdar, B. Loring, and B. GeveciPhys. Plas. 21, 6, id.062308, (2014)Download in pdf format.

MagneticReconnection

Current Sheets and Pressure Anisotropy in the Reconnection Exhaust, A. Le, J. Egedal, J. Ng, H. Karimabadi, J. Scudder, V. Roytershteyn, W. Daughton, and Y.-H. LiuUnknownDownload in pdf format.
THEORETICAL APPROACHES TO THE DESCRIPTION OF MAGNETIC MERGING: THE NEED FOR FINITE BETA ANISOTROPIC, AMBIPOLAR HALL MHD, J. D. ScudderSSRv80:235-267, 1997Download in pdf format.
Fingerprints of collisionless reconnection at the separator, I, Ambipolar-Hall signatures, J. D. Scudder, F. S. Mozer, N. C. Maynard, and C. T. RussellJGR, 107, A10, 1294, dos:10.1029/2001JA000126, 2002Download in pdf format.
Electron demagnetization and collisionless magnetic reconnection in 􏱜beta, J. D. Scudder, F. S. MozerPhys. Plasmas 12, 092903 (2005); doi:10.1063/1.2046887Download in pdf format.
Fully kinetic simulations of undriven magnetic reconnection with open boundary conditions, William Daughtona) and Jack ScudderPhys. Plasmas 13, 072101 (2006); doi:10.1063/1.2218817Download in pdf format.
Fully kinetic simulations of undriven magnetic reconnection with open boundary conditions, William Daughton and Jack Scudder, Homa KarimabadiPhys. Plasmas (Dated: June 2, 2006)Download in pdf format.
Multi-scale structure of the electron diffusion region Scudder2, H. Karimabadi, W. Daughton, and J. D. ScudderGRL 34, L13104; doi:10.1029/2007GL030306, 2007Download in pdf format.
‘‘Illuminating’’ electron diffusion regions of collisionless magnetic reconnection using electron agyrotropy, Jack Scudder and William DaughtonJGR, 113, A06222, doi:10.1029/2008JA013035, 2008Download in pdf format.
Electron diffusion region and thermal demagnetization, J. D. Scudder, R. D. Holdaway, R. Glassberg, and S. L. RodriguezJGR, 113, A10208, doi:10.1029/2008JA013361, 2008Download in pdf format.
First Resolved Observations of the Demagnetized Electron-Diffusion Region of an Astrophysical Magnetic-Reconnection Site, J. D. Scudder, R. D. Holdaway, W. S. Daughton, H. Karimabadi, V. Roytershteyn, C. T. Russell, and J. Y. LopezPRL 108, 225005 (2012)Download in pdf format.
The link between shocks, turbulence and magnetic reconnection in collisionless plasmas, H. Karimabadi, V. Roytershteyn, H. X. Vu, Y. Omelchenko, J. Scudder, W. Daughton, A. Dimmock, K. Nykyri, M. Wan, D. Sibeck, M. Tatineni, A. Majumdar, B. Loring, and B. GeveciPhys. Plas. 21, 6, id.062308, (2014)Download in pdf format.
Current sheets and pressure anisotropy in the reconnection exhaust, A. Le, J. Egedal, J. Ng, H. Karimabadi, J. Scudder, V. Roytershteyn, W. Daughton, and Y.-H. LiuPhysics Plasmas, 21, 012103, (2014)Download in pdf format.
The link between shocks, turbulence, and magnetic reconnection in collisionless plasmas, H. Karimabadi, V. Roytershteyn, H. X. Vu, Y. A. Omelchenko, J. Scudder, W. Daughton, A. Dimmock, K. Nykyri , M. Wan, D. Sibeck, M. Tatineni, A. Majumdar, B. Loring, and B. GeveciPhys. Plasmas 21, 062308 (2014); doi:10.1063/1.4882875Download in pdf format.
Fundamental Concepts Associated with Magnetic Reconnection, W.D. Gonzalez, E.N. Parker, F.S. Mozer, V.M. Vasyli Â¯unas, P.L. Pritchett,H. Karimabadi, P.A. Cassak, J.D. Scudder, M. Yamada, R.M. Kulsrud,and D. Koga.in Magnetic Reconnection, Astrophysics and Space Science Library 427, DOI 10.1007/978-3-319-26432-5_1, 1-31,(2016)Download in pdf format.
Collisionless Reconnection and Electron Demagnetization, J. D. Scudderin Magnetic Reconnection, Astrophysics and Space Science Library 427, DOI 10.1007/978-3-319-26432-5_2, 32-100,(2016)Download in pdf format.

Planetary

A Survey of the Plasma Electron Environment of Jupiter: A View From Voyager, J. D. Scudder, E. C. Sittler, Jr., H. S. BridgeJGR 86, A10 8157(23pp), September 30, 1981Download in pdf format.
WHY ALL STARS SHOULD POSSESS CIRCUMSTELLAR TEMPERATURE INVERSIONS, Jack D. ScudderAp. J., 398:319(32pp), 1992 October 10Download in pdf format.

Instrumentation

FIRST RESULTS FROM THE SIX-AXIS ELECTRON SPECTROMETER ON ISEE-1, K. W. Ogilvie and J. D. ScudderNASA/GSFC LabDownload in pdf format.
hydra - A 3-dimensional Electron and ion hot plasma instrument for the polar spacecraft of the gas mission, J. SCUDDER, et.alSSRv 71: 459, 1995Download in pdf format.
Under Construction: 2020-05-07

Welcome to The University of Iowa Website for Professor Jack D. Scudder.

University of Iowa, Dept. of Physics and Astronomy

Recent Planetary Magnetopause Collisionless Shocks Magnetic Reconnection Solar Wind Instrumentation

Magnetopause

SolarWind

CollisionlessShocks

MagneticReconnection

Planetary

Instrumentation