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Cosmic Particle Measurements in Astrophysics: Exploring High-Energy Electron and Antiproton Ratios

This presentation by Simon Swordy from the University of Chicago on 27th January 2009 at the CERN Science Themes discusses the measurement of positrons, electrons, antiprotons, He3/4, and B/C in astrophysics. Covering electron measurements ranging from ~1 GeV to ~100 TeV, the calculations focus on variations in e-Coupling with local supernova/plerion activity. The potential sources of energy from electrons and the PEBS statistics based on an exposure of 5m^2sr days are explored. Particularly, the presentation examines the potential of PEBS in exploring cosmic particle ratios, including the positron ratio, antiproton/proton ratio, and the ratio decrease at high energies. It also delves into the consistency of secondary nuclei measurements with potential PEBS deduced from high statistics at 100GeV/n.

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Cosmic Particle Measurements in Astrophysics: Exploring High-Energy Electron and Antiproton Ratios

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Presentation Transcript

  1. Astrophysics Perspectives Simon Swordy - University of Chicago 27th Jan 2009, PEBS meeting, CERN

  2. Science Themes • Measurement of positrons • Measurement of all electrons • Measurement of antiprotons • Measurement of He3/4 and B/C

  3. All electrons (5m^2 sr days)

  4. Electrons ~1GeV

  5. Electrons ~100TeV

  6. Calculations of variations in e Coupled with local SN/plerion activity

  7. Potential Sources of Energy Electrons

  8. Potential PEBs statistics based on an exposure of 5m^2sr days (e.g. 2500 cm^2 sr x 20days, or 4000 cm^2 sr x 12.5 days) PEBS potential in blue Positron ratio

  9. Antiproton/proton ratio Ratio should decrease at high energy

  10. Secondary nuclei (blue - potential PEBS) Are these consistent? (reacceleration, etc) Note: high stats from He3/4 at 100GeV/n

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