<h1>Cummings, Alan</h1> <h2>Article from <a href="https://authors.library.caltech.edu">CaltechAUTHORS</a></h2> <ul> <li>Cohen, C. M. S. and Mason, G. M., el al. (2025) <a href="https://authors.library.caltech.edu/records/1yy58-ja209">Longitudinal Dependence of Heavy Ion Composition in the 2021 October 28 Ground Level Enhancement Event</a>; Astrophysical Journal Letters; Vol. 978; No. 2; L35; <a href="https://doi.org/10.3847/2041-8213/ada24b">10.3847/2041-8213/ada24b</a></li> <li>Cummings, Alan C. (2024) <a href="https://authors.library.caltech.edu/records/7cspr-k7h76">Edward C. Stone obituary: physicist who guided Voyager probes to interstellar space</a>; Nature; Vol. 631; No. 8021; 501; <a href="https://doi.org/10.1038/d41586-024-02285-w">10.1038/d41586-024-02285-w</a></li> <li>Binns, W. R. and Wiedenbeck, M. E., el al. (2022) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20220908-184327219">The Isotopic Abundances of Galactic Cosmic Rays with Atomic Number 29 ≤ Z ≤ 38</a>; Astrophysical Journal; Vol. 936; No. 1; 13; <a href="https://doi.org/10.3847/1538-4357/ac82e7">10.3847/1538-4357/ac82e7</a></li> <li>Chhiber, R. and Matthaeus, W. H., el al. (2021) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20210608-140607023">Magnetic field line random walk and solar energetic particle path lengths. Stochastic theory and PSP/IS⊙IS observations</a>; Astronomy and Astrophysics; Vol. 650; Art. No. A26; <a href="https://doi.org/10.1051/0004-6361/202039816">10.1051/0004-6361/202039816</a></li> <li>Richardson, John D. and Belcher, John W., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20201002-094021793">Voyager 2 Observations Near the Heliopause</a>; Journal of Physics Conference Series; Vol. 1620; Art. No. 012016; <a href="https://doi.org/10.1088/1742-6596/1620/1/012016">10.1088/1742-6596/1620/1/012016</a></li> <li>Schwadron, N. A. and Bale, S., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-092721301">Seed Population Preconditioning and Acceleration Observed by the Parker Solar Probe</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 33; <a href="https://doi.org/10.3847/1538-4365/ab5527">10.3847/1538-4365/ab5527</a></li> <li>Leske, R. A. and Christian, E. R., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-131825142">Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 35; <a href="https://doi.org/10.3847/1538-4365/ab5712">10.3847/1538-4365/ab5712</a></li> <li>Joyce, C. J. and McComas, D. J., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-092721619">Energetic Particle Observations from the Parker Solar Probe Using Combined Energy Spectra from the IS⊙IS Instrument Suite</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 41; <a href="https://doi.org/10.3847/1538-4365/ab5948">10.3847/1538-4365/ab5948</a></li> <li>Cohen, C. M. S. and Christian, E. R., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-104219201">Energetic Particle Increases Associated with Stream Interaction Regions</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 20; <a href="https://doi.org/10.3847/1538-4365/ab4c38">10.3847/1538-4365/ab4c38</a></li> <li>Wiedenbeck, M. E. and Bučik, R., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-092721818">³He-rich Solar Energetic Particle Observations at the Parker Solar Probe and near Earth</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 42; <a href="https://doi.org/10.3847/1538-4365/ab5963">10.3847/1538-4365/ab5963</a></li> <li>Zhao, L.-L. and Zank, G. P., el al. (2019) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20191202-155700225">ACR Proton Acceleration Associated with Reconnection Processes beyond the Heliospheric Termination Shock</a>; Astrophysical Journal; Vol. 886; No. 2; Art. No. 144; <a href="https://doi.org/10.3847/1538-4357/ab4db4">10.3847/1538-4357/ab4db4</a></li> <li>Stone, Edward C. and Cummings, Alan C., el al. (2019) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20190926-164717298">Cosmic ray measurements from Voyager 2 as it crossed into interstellar space</a>; Nature Astronomy; Vol. 3; No. 11; 1013-1018; <a href="https://doi.org/10.1038/s41550-019-0928-3">10.1038/s41550-019-0928-3</a></li> <li>Rankin, J. S. and Stone, E. C., el al. (2019) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20190321-114830889">Galactic Cosmic-Ray Anisotropies: Voyager 1 in the Local Interstellar Medium</a>; Astrophysical Journal; Vol. 873; No. 1; Art. No. 46; <a href="https://doi.org/10.3847/1538-4357/ab041f">10.3847/1538-4357/ab041f</a></li> <li>Richardson, John D. and Belcher, John W., el al. (2018) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20181025-112020309">Voyager 2 Observations of Plasma and Pressure Pulses</a>; Journal of Physics: Conference Series; Vol. 1100; Art. No. 012019; <a href="https://doi.org/10.1088/1742-6596/1100/1/012019">10.1088/1742-6596/1100/1/012019</a></li> <li>Israel, M. H. and Lave, K. A., el al. (2018) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20180921-095050945">Elemental Composition at the Cosmic-Ray Source Derived from the ACE-CRIS Instrument. I. _6C to _(28)Ni</a>; Astrophysical Journal; Vol. 865; No. 1; Art. No. 69; <a href="https://doi.org/10.3847/1538-4357/aad867">10.3847/1538-4357/aad867</a></li> <li>McComas, D. J. and Burnham, J. A., el al. (2016) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140709-091502003">Integrated Science Investigation of the Sun (ISIS): Design of the Energetic Particle Investigation</a>; Space Science Reviews; Vol. 204; No. 1; 187-256; <a href="https://doi.org/10.1007/s11214-014-0059-1">10.1007/s11214-014-0059-1</a></li> <li>Binns, W. R. and Israel, M. H., el al. (2016) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160422-072602817">Observation of the ^(60)Fe nucleosynthesis-clock isotope in galactic cosmic rays</a>; Science; Vol. 352; No. 6286; 677-680; <a href="https://doi.org/10.1126/science.aad6004">10.1126/science.aad6004</a></li> <li>Zank, G. P. and Hunana, P., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160324-112710122">Diffusive Shock Acceleration and Reconnection Acceleration Processes</a>; Astrophysical Journal; Vol. 814; No. 2; Art. No. 137; <a href="https://doi.org/10.1088/0004-637X/814/2/137">10.1088/0004-637X/814/2/137</a></li> <li>Gurnett, D. A. and Kurth, W. S., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20151020-083336736">Precursors To Interstellar Shocks of Solar Origin</a>; Astrophysical Journal; Vol. 809; No. 2; Art. No. 121; <a href="https://doi.org/10.1088/0004-637X/809/2/121">10.1088/0004-637X/809/2/121</a></li> <li>Senanayake, U. K. and Florinski, V., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150604-140432982">Spectral Evolution of Anomalous Cosmic Rays at Voyager 1 beyond the Termination Shock</a>; Astrophysical Journal; Vol. 804; No. 1; Art. No. 12; <a href="https://doi.org/10.1088/0004-637X/804/1/12">10.1088/0004-637X/804/1/12</a></li> <li>Florinski, V. and Stone, E. C., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150518-085218576">Energetic Particle Anisotropies at the Heliospheric Boundary. II. Transient Features and Rigidity Dependence</a>; Astrophysical Journal; Vol. 803; No. 1; Art. No. 47; <a href="https://doi.org/10.1088/0004-637X/803/1/47">10.1088/0004-637X/803/1/47</a></li> <li>Stone, E. C. and Cummings, A. C., el al. (2013) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20130725-143748629">Voyager 1 Observes Low-Energy Galactic Cosmic Rays in a Region Depleted of Heliospheric Ions</a>; Science; Vol. 341; No. 6142; 150-153; <a href="https://doi.org/10.1126/science.1236408">10.1126/science.1236408</a></li> <li>Lave, K. A. and Wiedenbeck, M. E., el al. (2013) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20130725-072008737">Galactic Cosmic-Ray Energy Spectra and Composition during the 2009-2010 Solar Minimum Period</a>; Astrophysical Journal; Vol. 770; No. 2; Art. No. 117; <a href="https://doi.org/10.1088/0004-637X/770/2/117">10.1088/0004-637X/770/2/117</a></li> <li>Leske, R. A. and Cummings, A. C., el al. (2013) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-083853990">Anomalous and Galactic Cosmic Rays at 1 AU During the Cycle 23/24 Solar Minimum</a>; Space Science Reviews; Vol. 176; No. 1-4; 253-263; <a href="https://doi.org/10.1007/s11214-011-9772-1">10.1007/s11214-011-9772-1</a></li> <li>Leske, R. A. and Cohen, C. M. S., el al. (2012) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20121207-133222594">Large Proton Anisotropies in the 18 August 2010 Solar Particle Event</a>; Solar Physics; Vol. 281; No. 1; 301-318; <a href="https://doi.org/10.1007/s11207-012-0018-5">10.1007/s11207-012-0018-5</a></li> <li>Webber, W. R. and McDonald, F. B., el al. (2012) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20120502-145049365">Sudden intensity increases and radial gradient changes of cosmic ray MeV electrons and protons observed at Voyager 1 beyond 111 AU in the heliosheath</a>; Geophysical Research Letters; Vol. 39; No. 6; Art. 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(2010) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100830-135106755">Heavy-ion Fractionation in the Impulsive Solar Energetic Particle Event of 2002 August 20: Elements, Isotopes, and Inferred Charge States</a>; Astrophysical Journal; Vol. 719; No. 2; 1212-1229; <a href="https://doi.org/10.1088/0004-637X/719/2/1212">10.1088/0004-637X/719/2/1212</a></li> <li>Abbott, B. P. and Abbott, R., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20091021-153057198">First LIGO search for gravitational wave bursts from cosmic (super)strings</a>; Physical Review D; Vol. 80; No. 6; Art. No. 062002; <a href="https://doi.org/10.1103/PhysRevD.80.062002">10.1103/PhysRevD.80.062002</a></li> <li>Cummings, A. C. and Tranquille, C., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20091013-093452473">Radial and latitudinal gradients of anomalous cosmic ray oxygen in the inner heliosphere</a>; Geophysical Research Letters; Vol. 36; No. 18; L18103; <a href="https://doi.org/10.1029/2009GL039851">10.1029/2009GL039851</a></li> <li>Webber, W. R. and Cummings, A. C., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20090817-144816744">Transient intensity changes of cosmic rays beyond the heliospheric termination shock as observed at Voyager 1</a>; Journal of Geophysical Research A; Vol. 114; No. 7; A07108; <a href="https://doi.org/10.1029/2009JA014156">10.1029/2009JA014156</a></li> <li>George, J. S. and Lave, K. A., el al. 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(2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20090918-091120378">STEREO Observations of Energetic Neutral Hydrogen Atoms During the 2006 December 5 Solar Flare</a>; Astrophysical Journal Letters; Vol. 693; No. 1; L11-L15; <a href="https://doi.org/10.1088/0004-637X/693/1/L11">10.1088/0004-637X/693/1/L11</a></li> <li>Webber, W. R. and Cummings, A. C., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:WEBjgra08">Galactic cosmic ray H and He nuclei energy spectra measured by Voyagers 1 and 2 near the heliospheric termination shock in positive and negative solar magnetic polarity cycles</a>; Journal of Geophysical Research A; Vol. 113; No. A10; A10108; <a href="https://doi.org/10.1029/2008JA013395">10.1029/2008JA013395</a></li> <li>Binns, W. R. and Wiedenbeck, M. E., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:BINnar08">The OB association origin of galactic cosmic rays</a>; New Astronomy Reviews; Vol. 52; No. 7-10; 427-430; <a href="https://doi.org/10.1016/j.newar.2008.05.008">10.1016/j.newar.2008.05.008</a></li> <li>Stone, Edward C. and Cummings, Alan C., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-095819459">An asymmetric solar wind termination shock</a>; Nature; Vol. 454; No. 7200; 71-74; <a href="https://doi.org/10.1038/nature07022">10.1038/nature07022</a></li> <li>Sollitt, L. S. and Stone, E. C., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:SOLapj08">A novel technique to infer ionic charge states of solar energetic particles</a>; Astrophysical Journal; Vol. 679; No. 1; 910-919; <a href="https://doi.org/10.1086/587121">10.1086/587121</a></li> <li>Luhmann, J. G. and Mewaldt, R. A., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-100947326">STEREO IMPACT Investigation Goals, Measurements, and Data Products Overview</a>; Space Science Reviews; Vol. 136; No. 1-4; 117-184; <a href="https://doi.org/10.1007/s11214-007-9170-x">10.1007/s11214-007-9170-x</a></li> <li>von Rosenvinge, T. T. and Reames, D. V., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160630-091011138">The High Energy Telescope for STEREO</a>; Space Science Reviews; Vol. 136; No. 1-4; 391-435; <a href="https://doi.org/10.1007/978-0-387-09649-0_14">10.1007/978-0-387-09649-0_14</a></li> <li>Mewaldt, R. A. and Cohen, C. M. S., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-100838268">The Low-Energy Telescope (LET) and SEP Central Electronics for the STEREO Mission</a>; Space Science Reviews; Vol. 136; No. 1-4; 285-362; <a href="https://doi.org/10.1007/s11214-007-9288-x">10.1007/s11214-007-9288-x</a></li> <li>Webber, W. R. and Cummings, A. C., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-091625580">Passage of a large interplanetary shock from the inner heliosphere to the heliospheric termination shock and beyond: Its effects on cosmic rays at Voyagers 1 and 2</a>; Geophysical Research Letters; Vol. 34; No. 20; Art. No. L20107; <a href="https://doi.org/10.1029/2007GL031339">10.1029/2007GL031339</a></li> <li>Webber, W. R. and Cummings, A. C., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140905-154130174">Temporal and spectral variations of anomalous oxygen nuclei measured by Voyager 1 and Voyager 2 in the outer heliosphere</a>; Journal of Geophysical Research A; Vol. 112; No. A6; Art. No. A06105; <a href="https://doi.org/10.1029/2006JA012207">10.1029/2006JA012207</a></li> <li>Binns, W. R. and Wiedenbeck, M. E., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-105038224">OB Associations, Wolf-Rayet Stars, and the Origin of Galactic Cosmic Rays</a>; Space Science Reviews; Vol. 130; No. 1-4; 439-449; <a href="https://doi.org/10.1007/s11214-007-9195-1">10.1007/s11214-007-9195-1</a></li> <li>Leske, R. A. and Mewaldt, R. A., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100503-155507464">An Update on Ultra-Heavy Elements in Solar Energetic Particles above 10 MeV/Nucleon</a>; Space Science Reviews; Vol. 130; No. 1-4; 335-340; <a href="https://doi.org/10.1007/s11214-007-9191-5">10.1007/s11214-007-9191-5</a></li> <li>Mewaldt, R. A. and Cohen, C. M. S., el al. 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