Search Results - "Cohen, C. M. S."
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The Low-Energy Telescope (LET) and SEP Central Electronics for the STEREO Mission
Published in Space science reviews (01-04-2008)“…The Low-Energy Telescope (LET) is one of four sensors that make up the Solar Energetic Particle (SEP) instrument of the IMPACT investigation for NASA’s STEREO…”
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Role of flares and shocks in determining solar energetic particle abundances
Published in Journal of Geophysical Research - Space Physics (01-06-2006)“…We examine solar energetic particle (SEP) event‐averaged abundances of Fe relative to O and intensity versus time profiles at energies above 25 MeV/nucleon…”
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On the differences in composition between solar energetic particles and solar wind
Published in Space science reviews (01-06-2007)“…Issue Title: The Composition of Matter Although the average composition of solar energetic particles (SEPs) and the bulk solar wind are similar in a number of…”
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Conference Proceeding Journal Article -
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Abundances and Energy Spectra of Corotating Interaction Region Heavy Ions Observed during Solar Cycle 23
Published in The Astrophysical journal (10-05-2008)“…Using instruments on the ACE spacecraft, we surveyed the heavy-ion spectra and composition over the range He-Fe for 41 corotating interaction regions (CIRs)…”
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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
Published in Solar physics (01-08-2014)“…Using observations from the High Energy Telescopes (HETs) on the STEREO A and B spacecraft and similar observations from near-Earth spacecraft, we summarize…”
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DERIVING THE PROPERTIES OF CORONAL PRESSURE FRONTS IN 3D: APPLICATION TO THE 2012 MAY 17 GROUND LEVEL ENHANCEMENT
Published in The Astrophysical journal (10-12-2016)“…ABSTRACT We study the link between an expanding coronal shock and the energetic particles measured near Earth during the ground level enhancement of 2012 May…”
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THE LONGITUDINAL PROPERTIES OF A SOLAR ENERGETIC PARTICLE EVENT INVESTIGATED USING MODERN SOLAR IMAGING
Published in The Astrophysical journal (10-06-2012)“…We use combined high-cadence, high-resolution, and multi-point imaging by the Solar-Terrestrial Relations Observatory (STEREO) and the Solar and Heliospheric…”
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Persistent Behavior in Solar Energetic Particle Time Series
Published in The Astrophysical journal (01-07-2024)“…Abstract We investigate the long-term persistence of solar energetic particle (SEP) time series by means of four different methods: Hurst rescaled range R / S…”
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THE VERY UNUSUAL INTERPLANETARY CORONAL MASS EJECTION OF 2012 JULY 23: A BLAST WAVE MEDIATED BY SOLAR ENERGETIC PARTICLES
Published in The Astrophysical journal (10-06-2013)“…The giant, superfast, interplanetary coronal mass ejection, detected by STEREO A on 2012 July 23, well away from Earth, appears to have reached 1 AU with an…”
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Journal Article -
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Probing the Energetic Particle Environment near the Sun
Published in Nature (London) (12-12-2019)“…NASA’s Parker Solar Probe mission1 recently plunged through the inner heliosphere of the Sun to its perihelia, about 24 million kilometres from the Sun…”
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Energetic Neutral Atoms Detected in the 2022 February 15 Solar Energetic Particle Event
Published in Astrophysical journal. Letters (01-05-2024)“…Abstract Energetic neutral atoms (ENAs) are expected to be produced near the Sun during large solar energetic particle (SEP) events. However, their detection…”
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Energy Spectra, Composition, and Other Properties of Ground-Level Events During Solar Cycle 23
Published in Space science reviews (01-10-2012)“…We report spacecraft measurements of the energy spectra of solar protons and other solar energetic particle properties during the 16 Ground Level Events (GLEs)…”
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Kappa-tail Technique: Modeling and Application to Solar Energetic Particles Observed by Parker Solar Probe
Published in The Astrophysical journal (01-09-2024)“…Abstract We develop the kappa-tail fitting technique, which analyzes observations of power-law tails of distributions and energy flux spectra, and connects…”
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Parker Solar Probe Encounters the Leg of a Coronal Mass Ejection at 14 Solar Radii
Published in The Astrophysical journal (01-02-2023)“…Abstract We use Parker Solar Probe (PSP) observations to report the first direct measurements of the particle and field environments while crossing the leg of…”
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Observations of Kappa Distributions in Solar Energetic Protons and Derived Thermodynamic Properties
Published in The Astrophysical journal (01-10-2024)“…Abstract In this paper, we model the high-energy tail of observed solar energetic proton energy distributions with a kappa distribution function. We employ a…”
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Correlation of Coronal Mass Ejection Shock Temperature with Solar Energetic Particle Intensity
Published in The Astrophysical journal (01-04-2024)“…Abstract Solar energetic particle (SEP) events have been observed by the Parker Solar Probe (PSP) spacecraft since its launch in 2018. These events include…”
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Journal Article -
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IS⊙IS Solar γ-Ray Measurements: Initial Observations and Calibrations
Published in The Astrophysical journal (01-06-2024)“…High-energy neutral solar radiation in the form of γ-rays and neutrons is produced as secondary products in solar flares. The characteristics of this emission…”
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Charge states of energetic ions in Jupiter's radiation belt inferred from absorption microsignatures of Io
Published in Journal of Geophysical Research - Space Physics (01-01-2009)“…The Heavy Ion Counter on the Galileo Jupiter orbiter observed depletions of energetic (≳5 MeV/nucleon) oxygen and sulfur ions near Io that are interpreted as…”
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Analyses of ∼0.05–2 MeV Ions Associated with the 2022 February 16 Energetic Storm Particle Event Observed by Parker Solar Probe
Published in The Astrophysical journal (01-12-2023)“…Abstract We present analyses of 0.05–2 MeV ions from the 2022 February 16 energetic storm particle event observed by Parker Solar Probe's (PSP) IS⊙IS/EPI-Lo…”
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Likely Common Coronal Source of Solar Wind and 3He-enriched Energetic Particles: Uncoupled Transport from the Low Corona to 0.2 au
Published in The Astrophysical journal (01-04-2024)“…Parker Solar Probe (PSP) observations of a small dispersive event on 2022 February 27 and 28 indicate scatter-free propagation as the dominant transport…”
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Journal Article