SOLAR FLARES, X-RAYS SOLAR FLARES, X- -RAYS RAYS SOLAR FLARES, X - PowerPoint PPT Presentation

SOLAR FLARES, X-RAYS SOLAR FLARES, X- -RAYS RAYS SOLAR FLARES, X & MUON RATE & MUON RATE & MUON RATE September 2005 September 2005 September 2005

Solar Storm September 7-19, 2005 • 10 X-class solar flares – X-class is the highest class energy flare – Maximum: X17 on 09/07 • 26 M-class solar flares

Muon Analysis 1 385 0 1000 2000 3000 4000 5000 6000 7000 8000 0.1 380 0.01 0.001 Muon Rate (Muons/5 minutes) 375 X-Ray Flux l(W/m²) 0.0001 Ray Flux 1E-05 370 Muon Rate 1E-06 365 1E-07 1E-08 360 1E-09 1E-10 355 Time (5 minutes)

Sept ’05 Solar Storm: A Glancing Blow

Halloween ’03 Solar Storm: A Direct Hit!

Analysis • Forbush decrease – 3-5% – 1 week duration • Comparison: October 2003 Solar Storm – 10% decrease – 2 week duration • ~3 day delay between solar flare & Muon flux