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Title. Searching for High Energy Muonic Neutrinos from Gamma-Ray Bursts Using AMANDA. A.J. Carver University of Wisconsin – Madison Advisors: Prof. Bob Morse & Mike Stamatikos August 7, 2003 acarver@wisc.edu. New Window. Neutrinos - A New Window On Astronomy.

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  1. Title Searching for High Energy Muonic Neutrinos from Gamma-Ray Bursts Using AMANDA A.J. Carver University of Wisconsin – Madison Advisors: Prof. Bob Morse & Mike Stamatikos August 7, 2003 acarver@wisc.edu

  2. New Window Neutrinos - A New Window On Astronomy The 21st Century will feature Neutrino Astronomy with AMANDA/IceCube!

  3. Significance Discovering High Energy Muonic Neutrinos from GRBs would be VERY SIGNIFICANT • Confirm hadron acceleration in the relativistic GRB wind • Validate the FIREBALL MODEL phenomenology • Provide an acceleration mechanism for the highest energy cosmic rays • We hope to make this discovery

  4. GRB Discovery Gamma-Ray Bursts (GRBs) – The Past 30 yrs • Discovered in 1969 by Vela nuclear test detection satellites (Klebesadal, et al., 1973) • Bursts of Gamma-Rays NOT from Sun or Earth • Little more learned because of little observational data

  5. GRB Questions • BATSE - BurstAndTransientSourceExperiment Gamma-Ray Bursts (GRBs) – Questions • Where on the sky do GRBs occur? • Are all GRBs the same? • How far away are GRBs? • What causes GRBs? • More observations needed

  6. Isotropic • Everywhere – GRBs Isotropically distributed Gamma-Ray Bursts (GRBs) – Q&A • Where on the sky do GRBs occur?

  7. Unique • NO! Absolutely not. Gamma-Ray Bursts (GRBs) – Q&A • Are all GRBs the same?

  8. Cosmological • GRBs are at cosmological distances Gamma-Ray Bursts (GRBs) – Q&A • How far away are GRBs?

  9. GRB&v Connection GRBs & Neutrinos – The Connection Coincident Search – Neutrinos Coincident with Photons

  10. AMANDA Neutrino Detection AMANDA – Antarctic Muon And Neutrino Detector Array • Neutrino Telescope • Located at South Pole • Uses PMTs to detect Cherenkov radiation created by fast moving particles • We are interested in up-going events

  11. Past Past Analysis • Searched for neutrinos from GRBs detected by BATSE between 1997 and 2000 data • Used generic neutrino spectrum

  12. Past Blinded (10) minute window + (5) minutes - (5) minutes - (60) minutes + (60) minutes (120-10 = 110) Minute background used to set cuts and check for data quality & stability Past Analysis • Produced a framework and tools for future GRB analyses • Detector stability & data integrity • Background minimization (cuts) NO GRB neutrinos coincidence detected – results in 2003 International Cosmic Ray Conference (ICRC) proceedings

  13. Present Present Analysis • Models the neutrino spectrum on a per burst basis (based on Guetta et al. 2003 astro-ph0302524) • Determines per burst neutrino event rates • Extends analysis to 2003 • Creating user-friendly and flexible infrastructure

  14. GRB Catalog Comparisons Catalog Comparison 1 The Stern catalog overlaps ~96% of Kommers and ~94% of Schmidt (GUSBAD) catalogs.

  15. T90 Distribution

  16. Sky Plot 96 BATSE (triggered) bursts and 9 Stern (non-triggered) bursts passed the selection criteria

  17. Dec Distribution

  18. BATSE Errors Discovery of Errors in current BATSE Catalog • BATSE trigger 7644 – solar flare, NOT A GRB • BATSE triggers 2463 and 2464 – SGRs, NOT GRBs • 8 more triggers will be reclassified for the upcoming 5B catalog • Many order problems in 4B & Current Cmax/Cmin Catalog • Being corrected by BATSE team • Demonstration of thoroughness

  19. IPN3 K. Hurley, http://ssl.berkeley.edu/ipn3/ • Group of satellites capable on Gamma ray detection • Bridge between BATSE & Swift • 24 member instruments as of 5/22/03 • Major endeavor • 16 eliminated • 3 still under investigation • 5 accepted • Comparisons have begun

  20. Future Future Analysis • Methods developed now will allow for speedier analysis of future data • A dedicated GRB satellite ~200 bursts/yr ICECUBE – Kilometer cubed neutrino telescope

  21. Conclusion Conclusions • Neutrino Astronomy – New Window on the Universe • Neutrino Production - Consequence of Fireball Phenomenology of GRBs • GRB Neutrino Coincidence – Significant Discovery • Comprehensive Comparisons - BATSE & 3 non-triggered catalogs • Generating IPN3 catalog – Welcomed by GRB community • Analysis Evolution • EXCITING FUTURE

  22. Thank You Thank You Mike Stamatikos, Bob Morse, Rellen Hardtke, Francis Halzen, Cary Forest, Paolo Desiati, Kath Rawlins, Brennan Hughey, Jodi Cooley, Bill Santner, Anupam Singh, Newt Ganugapati, Gary Hill, Albrecht Karle, Annie Malkus, more “AMANDROIDS” (Chris, Jessica, Dave, Kael), Bob Benjamin, Greg Madsen, Ron Reynolds, Aaron Steffen, Ken Nordsieck, TonyWeitenbeck, the REU students: Eric, Stephanie, Kiwi, Jeremy, Amanda, Karl, Tommy, Sam, Luis, Kimb, Quennie, Kelen, Luisa, and Marleen Without each of your influences, assistance, confidence, guidance, patience, empathy, support, and humor this research and my summer would not have been nearly as great. I am deeply grateful. Thank you! My apologies if I overlooked someone in preparing this slide

  23. Contact Info To learn more about “Searching for High Energy Muonic Neutrinos from Gamma-Ray Bursts Using AMANDA” contact: A.J. Carver - acarver@wisc.edu Or visit online at: http://wisp.physics.wisc.edu/~reu2003/carver

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