Ina Sarcevic (U of AZ) neutrinos at high E

• Known nu's: CNB, solar nu's, SN 1987A, atm nu's, extragalactic nu's
  
  
• UHECN's: ~1e21 eV
  
  
• Sources: Cosmogenic or GZK nu's, AGN, GRB's
  
  
• Mkn 421 at z = .003 was the first AGN seen by Whipple at TeV gamma rays
  
  
• If the production isn't 1:2:0 then there isn't a 1:1:1 for e:mu:tau seen on the Earth eventually..? i don't get how this works with maximal mixing
  
  
• Expts: look at muon tracks, and some look at em and hadronic showers.
  
  
• nu_tau have the regeneration effect. the effect depends on the angle of incidence quite a bit.
  
  
• XD, and much else...