Leske, Richard A.

Article from CaltechAUTHORS

• Khoo, L. Y. and Sánchez-Cano, B., et el. (2024) Multispacecraft Observations of a Widespread Solar Energetic Particle Event on 2022 February 15–16; The Astrophysical Journal; Vol. 963; No. 2; 107; 10.3847/1538-4357/ad167f
• Binns, W. R. and Wiedenbeck, M. E., et el. (2022) The Isotopic Abundances of Galactic Cosmic Rays with Atomic Number 29 ≤ Z ≤ 38; Astrophysical Journal; Vol. 936; No. 1; 13; 10.3847/1538-4357/ac82e7
• Chhiber, R. and Matthaeus, W. H., et el. (2021) Magnetic field line random walk and solar energetic particle path lengths. Stochastic theory and PSP/IS⊙IS observations; Astronomy and Astrophysics; Vol. 650; Art. No. A26; 10.1051/0004-6361/202039816
• Mitchell, J. G. and de Nolfo, G. A., et el. (2020) Small Electron Events Observed by Parker Solar Probe/IS⊙IS during Encounter 2; Astrophysical Journal; Vol. 902; No. 1; Art. No. 20; 10.3847/1538-4357/abb2a4
• Kouloumvakos, Athanasios and Vourlidas, Angelos, et el. (2020) The Solar Origin of Particle Events Measured by Parker Solar Probe; Astrophysical Journal; Vol. 899; No. 2; Art. No. 107; 10.3847/1538-4357/aba5a1
• Desai, M. I. and Mitchell, D. G., et el. (2020) Properties of Suprathermal-through-energetic He Ions Associated with Stream Interaction Regions Observed over the Parker Solar Probe's First Two Orbits; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 56; 10.3847/1538-4365/ab65ef
• Cohen, C. M. S. and Christian, E. R., et el. (2020) Energetic Particle Increases Associated with Stream Interaction Regions; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 20; 10.3847/1538-4365/ab4c38
• Joyce, C. J. and McComas, D. J., et el. (2020) Energetic Particle Observations from the Parker Solar Probe Using Combined Energy Spectra from the IS⊙IS Instrument Suite; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 41; 10.3847/1538-4365/ab5948
• Leske, R. A. and Christian, E. R., et el. (2020) Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 35; 10.3847/1538-4365/ab5712
• Giacalone, J. and Mitchell, D. G., et el. (2020) Solar Energetic Particles Produced by a Slow Coronal Mass Ejection at ∼0.25 au; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 29; 10.3847/1538-4365/ab5221
• Schwadron, N. A. and Bale, S., et el. (2020) Seed Population Preconditioning and Acceleration Observed by the Parker Solar Probe; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 33; 10.3847/1538-4365/ab5527
• Hill, M. E. and Mitchell, D. G., et el. (2020) Small, Low-energy, Dispersive Solar Energetic Particle Events Observed by Parker Solar Probe; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 65; 10.3847/1538-4365/ab643d
• Wiedenbeck, M. E. and Bučik, R., et el. (2020) ³He-rich Solar Energetic Particle Observations at the Parker Solar Probe and near Earth; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 42; 10.3847/1538-4365/ab5963
• Ghanbari, Keyvan and Florinski, Vladimir, et el. (2019) Galactic Cosmic Rays Modulation in the Vicinity of Corotating Interaction Regions: Observations During the Last Two Solar Minima; Astrophysical Journal; Vol. 882; No. 1; Art. No. 54; 10.3847/1538-4357/ab31a5
• Israel, M. H. and Lave, K. A., et el. (2018) Elemental Composition at the Cosmic-Ray Source Derived from the ACE-CRIS Instrument. I. _6C to _(28)Ni; Astrophysical Journal; Vol. 865; No. 1; Art. No. 69; 10.3847/1538-4357/aad867
• Luhmann, J. G. and Mays, M. L., et el. (2017) Modeling solar energetic particle events using ENLIL heliosphere simulations; Space Weather; Vol. 15; No. 7; 934-954; 10.1002/2017SW001617
• McComas, D. J. and Burnham, J. A., et el. (2016) Integrated Science Investigation of the Sun (ISIS): Design of the Energetic Particle Investigation; Space Science Reviews; Vol. 204; No. 1; 187-256; 10.1007/s11214-014-0059-1
• Binns, W. R. and Israel, M. H., et el. (2016) Observation of the ^(60)Fe nucleosynthesis-clock isotope in galactic cosmic rays; Science; Vol. 352; No. 6286; 677-680; 10.1126/science.aad6004
• Dresing, N. and Cohen, C. M. S., et el. (2014) Approaching Solar Maximum 24 with STEREO—Multipoint Observations of Solar Energetic Particle Events; Brazilian Journal of Physics; Vol. 44; No. 5; 504-511; 10.1007/s13538-014-0227-5
• Richardson, I. G. and von Rosenvinge, T. T., et el. (2014) > 25 MeV Proton Events Observed by the High Energy Telescopes on the STEREO A and B Spacecraft and/or at Earth During the First ~ Seven Years of the STEREO Mission; Solar Physics; Vol. 289; No. 8; 3059-3107; 10.1007/s11207-014-0524-8
• Lave, K. A. and Wiedenbeck, M. E., et el. (2013) Galactic Cosmic-Ray Energy Spectra and Composition during the 2009-2010 Solar Minimum Period; Astrophysical Journal; Vol. 770; No. 2; Art. No. 117; 10.1088/0004-637X/770/2/117
• Russell, C. T. and Mewaldt, R. A., et el. (2013) The Very Unusual Interplanetary Coronal Mass Ejection of 2012 July 23: A Blast Wave Mediated by Solar Energetic Particles; Astrophysical Journal; Vol. 770; No. 1; Art. No. 38; 10.1088/0004-637X/770/1/38
• Leske, R. A. and Cummings, A. C., et el. (2013) Anomalous and Galactic Cosmic Rays at 1 AU During the Cycle 23/24 Solar Minimum; Space Science Reviews; Vol. 176; No. 1-4; 253-263; 10.1007/s11214-011-9772-1
• Mason, G. M. and Li, G., et el. (2012) Interplanetary Propagation of Solar Energetic Particle Heavy Ions Observed at 1 AU and the Role of Energy Scaling; Astrophysical Journal; Vol. 761; No. 2; Art. No. 104; 10.1088/0004-637X/761/2/104
• Leske, R. A. and Cohen, C. M. S., et el. (2012) Large Proton Anisotropies in the 18 August 2010 Solar Particle Event; Solar Physics; Vol. 281; No. 1; 301-318; 10.1007/s11207-012-0018-5
• Mewaldt, R. A. and Looper, M. D., et el. (2012) Energy Spectra, Composition, and Other Properties of Ground-Level Events During Solar Cycle 23; Space Science Reviews; Vol. 171; No. 1-4; 97-120; 10.1007/s11214-012-9884-2
• Chollet, E. E. and Mewaldt, R. A., et el. (2010) Multipoint connectivity analysis of the May 2007 solar energetic particle events; Journal of Geophysical Research A; Vol. 115; Art. No. A12106; 10.1029/2010JA015552
• Mewaldt, R. A. and Davis, A. J., et el. (2010) Record-setting Cosmic-ray Intensities in 2009 and 2010; Astrophysical Journal Letters; Vol. 723; No. 1; L1-L6; 10.1088/2041-8205/723/1/L1
• Wiedenbeck, M. E. and Cohen, C. M. S., et el. (2010) Heavy-ion Fractionation in the Impulsive Solar Energetic Particle Event of 2002 August 20: Elements, Isotopes, and Inferred Charge States; Astrophysical Journal; Vol. 719; No. 2; 1212-1229; 10.1088/0004-637X/719/2/1212
• Mulligan, T. and Blake, J. B., et el. (2009) Short-period variability in the galactic cosmic ray intensity: High statistical resolution observations and interpretation around the time of a Forbush decrease in August 2006; Journal of Geophysical Research A; Vol. 114; No. A7; A07105; 10.1029/2008JA013783
• George, J. S. and Lave, K. A., et el. (2009) Elemental Composition and Energy Spectra of Galactic Cosmic Rays During Solar Cycle 23; Astrophysical Journal; Vol. 689; No. 2; 1666-1681; 10.1088/0004-637X/698/2/1666
• von Rosenvinge, T. T. and Richardson, I. G., et el. (2009) The Solar Energetic Particle Event of 14 December 2006; Solar Physics; Vol. 256; No. 1-2; 443-462; 10.1007/s11207-009-9353-6
• Mewaldt, R. A. and Leske, R. A., et el. (2009) STEREO Observations of Energetic Neutral Hydrogen Atoms During the 2006 December 5 Solar Flare; Astrophysical Journal Letters; Vol. 693; No. 1; L11-L15; 10.1088/0004-637X/693/1/L11
• Binns, W. R. and Wiedenbeck, M. E., et el. (2008) The OB association origin of galactic cosmic rays; New Astronomy Reviews; Vol. 52; No. 7-10; 427-430; 10.1016/j.newar.2008.05.008
• Sollitt, L. S. and Stone, E. C., et el. (2008) A novel technique to infer ionic charge states of solar energetic particles; Astrophysical Journal; Vol. 679; No. 1; 910-919; 10.1086/587121
• Mason, G. M. and Leske, R. A., et el. (2008) Abundances and energy spectra of corotating interaction region heavy ions observed during solar cycle 23; Astrophysical Journal; Vol. 678; No. 2; 1458-1470; 10.1086/533524
• Mewaldt, R. A. and Cohen, C. M. S., et el. (2008) The Low-Energy Telescope (LET) and SEP Central Electronics for the STEREO Mission; Space Science Reviews; Vol. 136; No. 1-4; 285-362; 10.1007/s11214-007-9288-x
• von Rosenvinge, T. T. and Reames, D. V., et el. (2008) The High Energy Telescope for STEREO; Space Science Reviews; Vol. 136; No. 1-4; 391-435; 10.1007/978-0-387-09649-0_14
• Leske, R. A. and Mewaldt, R. A., et el. (2007) An Update on Ultra-Heavy Elements in Solar Energetic Particles above 10 MeV/Nucleon; Space Science Reviews; Vol. 130; No. 1-4; 335-340; 10.1007/s11214-007-9191-5
• Leske, R. A. and Mewaldt, R. A., et el. (2007) Solar Isotopic Composition as Determined Using Solar Energetic Particles; Space Science Reviews; Vol. 130; No. 1-4; 195-205; 10.1007/s11214-007-9185-3
• Binns, W. R. and Wiedenbeck, M. E., et el. (2007) OB Associations, Wolf-Rayet Stars, and the Origin of Galactic Cosmic Rays; Space Science Reviews; Vol. 130; No. 1-4; 439-449; 10.1007/s11214-007-9195-1
• Mewaldt, R. A. and Cohen, C. M. S., et el. (2007) On the Differences in Composition between Solar Energetic Particles and Solar Wind; Space Science Reviews; Vol. 130; No. 1-4; 207-219; 10.1007/s11214-007-9187-1
• Wiedenbeck, M. E. and Binns, W. R., et el. (2007) An Overview of the Origin of Galactic Cosmic Rays as Inferred from Observations of Heavy Ion Composition and Spectra; Space Science Reviews; Vol. 130; No. 1-4; 415-429; 10.1007/s11214-007-9198-y
• Cohen, C. M. S. and Mewaldt, R. A., et el. (2007) Solar Elemental Composition Based on Studies of Solar Energetic Particles; Space Science Reviews; Vol. 130; No. 1-4; 183-194; 10.1007/s11214-007-9218-y
• Binns, W. R. and Wiedenbeck, M. E., et el. (2006) Superbubbles, Wolf-Rayet stars, and the origin of galactic cosmic rays; Journal of Physics: Conference Series; Vol. 47; 68-77; 10.1088/1742-6596/47/1/008
• Binns, W. R. and Wiedenbeck, M. E., et el. (2006) Wolf-Rayet stars, OB associations, and the origin of galactic cosmic rays; New Astronomy Reviews; Vol. 50; No. 7-8; 516-520; 10.1016/j.newar.2006.06.058
• Binns, W. R. and Wiedenbeck, M. E., et el. (2005) Cosmic-Ray Neon, Wolf-Rayet Stars, and the Superbubble Origin of Galactic Cosmic Rays; Astrophysical Journal; Vol. 634; No. 1; 351-364; 10.1086/496959
• Mewaldt, R. A. and Cohen, C. M. S., et el. (2005) Proton, helium, and electron spectra during the large solar particle events of October-November 2003; Journal of Geophysical Research A; Vol. 110; No. A9; Art. No. A09S18; 10.1029/2005JA011038
• Cohen, C. M. S. and Stone, E. C., et el. (2005) Heavy ion abundances and spectra from the large solar energetic particle events of October-November 2003; Journal of Geophysical Research A; Vol. 110; No. A9; Art. No. A09S16; 10.1029/2005JA011004
• Israel, M. H. and Binns, W. R., et el. (2005) Isotopic Composition of Cosmic Rays: Results from the Cosmic Ray Isotope Spectrometer on the ACE Spacecraft; Nuclear Physics A; Vol. 758; 201-208; 10.1016/j.nuclphysa.2005.05.038
• Slocum, P. L. and Stone, E. C., et el. (2003) Elemental Fractionation in Small Solar Energetic Particle Events; Astrophysical Journal; Vol. 594; No. 1; 592-604; 10.1086/376755
• Niebur, S. M. and Scott, L. M., et el. (2003) Cosmic ray energy loss in the heliosphere: Direct evidence from electron-capture-decay secondary isotopes; Journal of Geophysical Research A; Vol. 108; No. A10; Art. No. 8033; 10.1029/2003JA009876
• Cohen, C. M. S. and Mewaldt, R. A., et el. (2003) Variability of spectra in large solar energetic particle events; Advances in Space Research; Vol. 32; No. 12; 2649-2654; 10.1016/S0273-1177(03)00901-3
• Mason, G. M. and Wiedenbeck, M. E., et el. (2002) Spectral Properties of He and Heavy Ions in ^3He-rich Solar Flares; Astrophysical Journal; Vol. 574; No. 2; 1039-1058; 10.1086/341112
• Gopalswamy, N. and Yashiro, S., et el. (2002) Interacting Coronal Mass Ejections And Solar Energetic Particles; Astrophysical Journal; Vol. 572; No. 1; L103-L107; 10.1086/341601
• Mewaldt, R. A. and Cohen, C. M. S., et el. (2002) Fractionation of solar energetic particles and solar wind according to first ionization potential; Advances in Space Research; Vol. 30; No. 1; 79-84; 10.1016/S0273-1177(02)00263-6
• Slocum, P. L. and Wiedenbeck, M. E., et el. (2002) Energetic particle composition at 1 au during periods of moderate interplanetary particle fluxes; Advances in Space Research; Vol. 30; No. 1; 97-104; 10.1016/S0273-1177(02)00264-8
• Yanasak, N. E. and Wiedenbeck, M. E., et el. (2001) Measurement of the Secondary Radionuclides ^(10)Be, ^(26)Al, ^(36)Cl, ^(54)Mn, and ^(14)C and Implications for the Galactic Cosmic-Ray Age; Astrophysical Journal; Vol. 563; No. 2; 768-792; 10.1086/323842
• Davis, A. J. and Mewaldt, R. A., et el. (2001) Solar minimum spectra of galactic cosmic rays and their implications for models of the near-Earth radiation environment; Journal of Geophysical Research A; Vol. 106; No. A12; 29979-29987; 10.1029/2000JA000325
• Leske, R. A. and Mewaldt, R. A., et el. (2001) Observations of geomagnetic cutoff variations during solar energetic particle events and implications for the radiation environment at the Space Station; Journal of Geophysical Research A; Vol. 106; No. A12; 30011-30022; 10.1029/2000JA000212
• Smith, C. W. and Ness, N. F., et el. (2001) ACE Observations of The Bastille Day 2000 Interplanetary Disturbances; Solar Physics; Vol. 204; No. 1-2; 229-254; 10.1023/A:1014265108171
• Cohen, C. M. S. and Mewaldt, R. A., et el. (2001) Forecasting the arrival of shock-accelerated solar energetic particles at Earth; Journal of Geophysical Research A; Vol. 106; No. A10; 20979-20983; 10.1029/2000JA000216
• Mewaldt, R. A. and Yanasak, N. E., et el. (2001) Radioactive clocks and cosmic-ray transport in the galaxy; Space Science Reviews; Vol. 99; No. 1-4; 27-39; 10.1023/A:1013868225842
• Wiedenbeck, M. E. and Yanasak, N. E., et el. (2001) The Origin of Primary Cosmic Rays: Constraints from ACE Elemental and Isotopic Composition Observations; Space Science Reviews; Vol. 99; No. 1-4; 15-26; 10.1023/A:1013816209004
• Yanasak, N. E. and Wiedenbeck, M. E., et el. (2001) Cosmic-ray time scales using radioactive clocks; Advances in Space Research; Vol. 27; No. 4; 727-736; 10.1016/S0273-1177(01)00114-4
• Binns, W. R. and Wiedenbeck, M. E., et el. (2001) Galactic cosmic ray neon isotopic abundances measured by the cosmic ray isotope spectrometer (CRIS) on ACE; Advances in Space Research; Vol. 27; No. 4; 767-772; 10.1016/S0273-1177(01)00119-3
• George, J. S. and Wiedenbeck, M. E., et el. (2001) Distinguishing galactic cosmic-ray source models with first ionization potential and volatility; Advances in Space Research; Vol. 27; No. 4; 779-784; 10.1016/S0273-1177(01)00116-8
• Wiedenbeck, M. E. and Binns, W. R., et el. (2001) The isotopic source composition of cosmic-ray iron, cobalt, and nickel; Advances in Space Research; Vol. 27; No. 4; 773-778; 10.1016/S0273-1177(01)00120-X
• Mazur, J. E. and Mason, G. M., et el. (2000) Anomalous cosmic ray argon and other rare elements at 1-4 MeV/nucleon trapped within the Earth's magnetosphere; Journal of Geophysical Research A; Vol. 195; No. A9; 21015-21024; 10.1029/1999JA000272
• Selesnick, R. S. and Cummings, A. C., et el. (2000) Solar cycle dependence of the geomagnetically trapped anomalous cosmic rays; Geophysical Research Letters; Vol. 27; No. 15; 2349-2352; 10.1029/2000GL000049
• Wiedenbeck, M. E. and Binns, W. R., et el. (1999) Constraints on the Time Delay between Nucleosynthesis and Cosmic-Ray Acceleration from Observations of ^(59)Ni and ^(59)Co; Astrophysical Journal Letters; Vol. 523; No. 1; L61-L64; 10.1086/312242
• Cohen, C. M. S. and Mewaldt, R. A., et el. (1999) New observations of heavy-ion-rich solar particle events from ACE; Geophysical Research Letters; Vol. 26; No. 17; 2697-2700; 10.1029/1999GL900560
• Leske, R. A. and Mewaldt, R. A., et el. (1999) Event-to-event variations in the isotopic composition of neon in solar energetic particle events; Geophysical Research Letters; Vol. 26; No. 17; 2693-2696; 10.1029/1999GL900561
• Mazur, J. E. and Mason, G. M., et el. (1999) Charge States of Solar Energetic Particles Using the Geomagnetic Cutoff Technique: SAMPEX Measurements in the 6 November 1997 Solar Particle Event; Geophysical Research Letters; Vol. 26; No. 2; 173-176; 10.1029/1998GL900075
• Cohen, C. M. S. and Cummings, A. C., et el. (1999) Inferred charge states of high energy solar particles from the Solar Isotope Spectrometer on ACE; Geophysical Research Letters; Vol. 26; No. 2; 149-152; 10.1029/1998GL900218
• Leske, R. A. and Cohen, C. M. S., et el. (1999) Unusual isotopic composition of solar energetic particles observed in the November 6, 1997 event; Geophysical Research Letters; Vol. 26; No. 2; 153-156; 10.1029/1998GL900173
• Mason, G. M. and Cohen, C. M. S., et el. (1999) Particle acceleration and sources in the November 1997 solar energetic particle events; Geophysical Research Letters; Vol. 26; No. 2; 141-144; 10.1029/1998GL900235
• Stone, E. C. and Cohen, C. M. S., et el. (1998) The Cosmic-Ray Isotope Spectrometer for the Advanced Composition Explorer; Space Science Reviews; Vol. 86; No. 1-4; 285-356; 10.1023/A:1005075813033
• Klecker, B. and Mewaldt, R. A., et el. (1998) 9. A Search for Minor Ions in Anomalous Cosmic Rays; Space Science Reviews; Vol. 83; No. 1-2; 299-392
• Williams, D. L. and Leske, R. A., et el. (1998) Solar energetic particle isotopic composition; Space Science Reviews; Vol. 85; No. 1-2; 379-386; 10.1023/A:1005143710585
• Stone, E. C. and Cohen, C. M. S., et el. (1998) The solar isotope spectrometer for the Advanced Composition Explorer; Space Science Reviews; Vol. 86; No. 1-4; 357-408; 10.1023/A:1005027929871
• Oetliker, M. and Klecker, B., et el. (1997) The Ionic Charge of Solar Energetic Particles with Energies of 0.3-70 MeV per Nucleon; Astrophysical Journal; Vol. 477; No. 1; 495-501; 10.1086/303679
• Leske, R. A. and Mewaldt, R. A., et el. (1996) The Isotopic Composition of Anomalous Cosmic Rays from SAMPEX; Space Science Reviews; Vol. 78; No. 1-2; 149-154; 10.1007/BF00170801
• Mewaldt, R. A. and Cummings, A. C., et el. (1996) A Study of the Composition and Energy Spectra of Anomalous Cosmic Rays Using the Geomagnetic Field; Geophysical Research Letters; Vol. 23; No. 6; 617-620; 10.1029/96GL00423
• Leske, R. A. and Cummings, J. R., et el. (1995) Measurements of the Ionic Charge States of Solar Energetic Particles Using the Geomagnetic Field; Astrophysical Journal Letters; Vol. 452; No. 2; L149-L152; 10.1086/309718
• Selesnick, R. S. and Cummings, A. C., et el. (1993) Coronal Abundances of Neon and Magnesium Isotopes from Solar Energetic Particles; Astrophysical Journal Letters; Vol. 418; No. 1; L45-L48; 10.1086/187112
• Leske, R. A. (1993) The Elemental and Isotopic Composition of Galactic Cosmic-Ray Nuclei from Scandium through Nickel; Astrophysical Journal; Vol. 405; No. 2; 567-570