Recent Research:

1. Solar Wind and Corona

• The Origin of Persistently Non-Thermal Solar Wind Electrons: SERM's Demonstration of Dreicer Bifurcation Using Measured E_|| and Ion-Electron Coulomb Drag, J. D. Scudder, Solar Wind Electron Pressure Gradients, Suprathermal Spectral Hardness and Strahl Localization Organized by Single Point Measurements of 0.1 nV/m Ambipolar E_||, Ap. J., 944:133 (15pp), 2023 February 20 Download in pdf format.
  
• Solar Wind Electron Pressure Gradients, Suprathermal Spectral Hardness and Strahl Localization Organized by Single Point Measurements of 0.1 nV/m Ambipolar E_||, J. D. Scudder, Ap. J., 934:151 (28pp), 2022 August 1 Download in pdf format.
  
• Quality Metric for Spitzer–Braginskii and Grad 8 Moment Heat Flux Closures, J. D. Scudder, Ap. J., 907:90 (13pp), 2021 February 1 Download in pdf format.
  
• The Thermal Force in Astrophysical Plasmas: Current Free Coulomb Friction, J. D. Scudder, Ap. J., 882:146 (12pp), 2019 September 10 Download in pdf format.
  
• The Long-standing Closure Crisis in Coronal Plasmas, J. D. Scudder, Ap. J., 885:148 (13pp), 2019 November 10 Download in pdf format.
  
• Steady Electron Runaway Model SERM: Astrophysical Alternative for the Maxwellian Assumption, J. D. Scudder, Ap. J., 885:138 (10pp), 2019 November 08 Download in pdf format.
  
• Radial Variation of the Solar Wind Proton Temperature: Heat Flow or Addition?, J. D. Scudder, Ap. J., 809:126 (12pp), 2015 August 20 Download in pdf format.
  
• Ubiquitous Non-thermals in Astrophysical Plasmas: Restating the Difficulty of Maintaining Maxwellians, J. D. Scudder and H. Karimabadi, Ap. J., 770, 2013 (2013) Download in pdf format.
  

2. Collisionless Magnetic Reconnection

• Measuring Particle Current Density J on NASA's Magnetospheric Multiscale Mission (MMS), J. D. Scudder J. Geophys. Res. Space Phys. 126:e2020JA028619 (17pp), 2020 November 20 Download in pdf format.
  
• Fundamental Concepts Associated with Magnetic Reconnection, W.D. Gonzalez, E.N. Parker, F.S. Mozer, V.M. Vasyli ¯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. Scudder, in Magnetic Reconnection, Astrophysics and Space Science Library 427, DOI 10.1007/978-3-319-26432-5_2, 32-100,(2016) Download in pdf format.
  
• Frozen Flux Violations, Electron Demagnetization and Magnetic Reconnection, J. D. Scudder, H. Karimabadi, W. Daughton and V Roytershteyn, Phys. Plas. 22, 101204, (2015) Download in pdf format.
  
• The link between shocks, turbulence and magnetic reconnection in collisionless plasmas, H. Karimabadi, et. al., Phys. Plas. 21, 6, id.062308, (2014) Download in pdf format.
  
• Current sheets and pressure anisotropy in the reconnection exhaust, A. Le, et. al., Physics Plasmas, 21, 012103, (2014) Download in pdf format.
  
• First Resolved Observations of the Demagnetized Electron Diffusion Region of an Astrophysical Plasma, J. D. Scudder, R.D. Holdaway, W. Daughton, H. Karimabadi, V. Roytershteyn, C.T. Russell, and J.Y. Lopex, Phys. Rev. Lett., 108, 225005 (2012) Download in pdf format.
  
• Illuminating Electron Diffusion Regions of Collisionless Magnetic Reconnection using Electron Agyrotropy, J. D. Scudder, and W. Daughton, J. Geophys. Res., 113, A06222 (2008) Download in pdf format.
  
• Multi-scale Scructure of the Electron Diffusion Region, H. Karimabadi, W.Daughton and J. D. Scudder, Geophys. Res. Lett., 34, L13104 (2007) Download in pdf format.
  
• Fully kinetic simulations of undriven magnetic reconnection with open boundary conditions, W. Daughton, J. D. Scudder, and H. Karimabadi, Phys. Plasmas, 13, 072101 (2006) Download in pdf format.
  
• Electron demagnetization and collisionless magnetic reconnection in beta<<1 plasmas, J. D. Scudder, and F. S. Mozer, Phys. Plasmas, 12, 092903 (2005), doi:10.1063/1.2046887 Download in pdf format.
  
• Fingerprints of collisionless reconnection at the separator: I. Ambipolar-Hall signatures, J. D. Scudder, F. S. Mozer, N. C. Maynard, C. T. Russell, J. Geophys. Res., 107, A10, 1294, doi:10.1029/2001JA000126, 2002 .
  Download in pdf format.
  

3. Collisionless Shocks

• Geometry of Magnetosonic Shocks and Plane Polarized Waves: Coplanarity Variance Analysis, J. D. Scudder, J. Geophys. Res., 110, A02202, doi:10.1029/2004JA010660, February 2005. Download in pdf format.
  

4. CV

• Professor Jack D. Scudder CV
  

Curator: Anton Kananovich (anton-kananovich@uiowa.edu)
Under Construction: Oct 5, 2023