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SEP Data Analysis and Data Products for EMMREM

SEP Data Analysis and Data Products for EMMREM. Mihir I. Desai & Arik Posner Southwest Research Institute San Antonio, Texas. Time-intensity profiles of 0.1 - 500 MeV protons during the 2003 October-November storms. Solar event associations, Flare/CME properties.

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SEP Data Analysis and Data Products for EMMREM

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  1. SEP Data Analysis and Data Products for EMMREM Mihir I. Desai & Arik Posner Southwest Research Institute San Antonio, Texas

  2. Time-intensity profiles of 0.1 - 500 MeV protons during the 2003 October-November storms

  3. Solar event associations, Flare/CME properties

  4. Proton, Helium & Oxygen fluences for an SEP event

  5. Longitudinal Distribution of large gradual SEPs Cane et al (1986)

  6. Multi-spacecraft observations Kallenrode et al. 1993 (Solar Physics).

  7. STEREO will characterize the azimuthal distribution of SEP Properties

  8. Instruments & Energy coverage Add other datasets: e.g, SoHO/ERNE;Messenger

  9. SEP Analysis & Products for EMMREM • Event lists, and products for inputs into module • Time-histories • Energy Spectra • Peak Intensities • Format (?) • Radial and Longitudinal Distributions • Moon orbit • Mars • Radial Alignment • Longitudinal extrapolation (how without SEP propagation) • Validation using MSL/RAD; LRO/CRaTER

  10. only flares Solar Energetic Particles (SEPs) Old picture - up to 1990s’ • First discovered - Forbush 1946 from ground based ion counters • Closely related to H flares - (Meyer 1956) • Kahler et al. (late 1970s and early 1980s) found strong correlation with CMEs • Cane et al. (1986) made association with 2 types of radio bursts Current picture - two classes

  11. SEPs: Big Questions • Where? • At CME-shocks or in flares • Source material? • Ambient corona, solar wind, or other • Mechanisms? • Reconnection or CME-shock acceleration • Transport to Earth? • Scattering, Turbulence, fluctuations

  12. Two-Class Picture - 70’s-90’s Wild et al. (1963) Lin (1970) Pallavacini et al (1974) Kahler et al. (1978) Mason et al. (1984; 1986) Cane et al. (1986; 1988; 1991) Reames 1988; 1995; 1999) Reames (1995)

  13. 486 CME shocks Encounter suprathermal material in the corona and the IP medium (Mason et al. 1999 ApJ, 525, L133).

  14. Emerging Picture - since-90’s Two-stage acceleration process STEP 1: Production of a suprathermal seed populations STEP 2: Acceleration at CME-driven shocks Image Credit: ILWS Sentinels Science Definition Team Report

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