The Indus script is one of the major undeciphered scripts ofthe ancient world. I will discuss the difficulties associated withdeciphering this script and present a theoretical framework, based onMarkov chains, within which the syntax of the script can be exploredsystematically. I will present key results from the Markov chain analysiswhich provide evidence in favour the hypothesis that the script was usedto represent natural language. The use of other probabilistic methods foranalysis corpora of linear sequences will also be briefly outlined.
Effect of Resonant Neutrino Oscillation on TeV Neutrino Flavor Ratio from Choked GRBs
Abstract
In the collapsar scenario of the long duration Gamma-Ray Bursts(GRBs), multi-TeV neutrino emission is predicted as the jet makes its waythrough the stellar envelope. Such a neutrino signalis also expected for more general “failed” GRBs in which aputative jet is “choked” by a heavy envelope.If the neutrino oscillation parameters are in the atmospheric neutrinooscillation range, we show that the resonant oscillation ofelectron neutrino to muon/ natu neutrino can take place within the innerhigh density region of the choked jet progenitor with a heavy envelope,altering the neutrino flavor ratio on itssurface to $Phi^s_{u_e}:Phi^s_{u_mu}:Phi^s_{u_ au}=5:11:2$.Considering vacuum oscillation of these neutrinos on their way toEarth, the final flavor ratio detected on Earth is further modifiedto either :1.095:1.095$ for thelarge mixing angle solution to the solar neutrino data, or 1:1.3:1.3 formaximal mixing among the muon and tau neutrinos in vacuum.
