APS Talk Outline for GRB-GWB Search (for Spring 06) External Triggers Group

February 19, 2006External Triggers Group2 Outline of proposed plots (S2, S3, S4)  cumulative distribution of probabilities, 25-ms and 100-ms crosscorrelation lengths (page 4)  discussion of most significant excess in distributions  distribution of binomial probability statistic under null hypothesis (page 5)  results from other statistical tests (Soumya) (page 6)  example of upper limit curve for hrss upper limit determination (page 7)  distributions of hrss upper limits for S2, S3, S4 runs, using Q = 8.9, f = 250 Hz sine-gaussians (page 8)  Note: The plots will change slightly when the S4 search is rerun using Version 4 calibrations

February 19, 2006External Triggers Group3 Proposed discussion, plots for S5  As discussed in the review telecon, there is uncertainty as to what will be shown as far as S5 results is concerned  It’s possible to show plots corresponding to main bullets 1 and 5 in the previous slide, using S5 data analyzed so far, i.e. plots of the cumulative probability distributions, and a plot of the distribution of hrss upper limits  Note that it does not make sense to say that we did or did not see a signal from any GRB without taking into account the sample as a whole, i.e. this is a statistical search  Given that the talk is only 10 minutes long, it is unclear if there will be time for all of the proposed discussion

February 19, 2006External Triggers Group4 Cumulative probability distributions 25-ms cc length 100-ms cc length

February 19, 2006External Triggers Group5 Distribution of binomial probability statistic under null hypothesis

February 19, 2006External Triggers Group6 Ranksum test

February 19, 2006External Triggers Group7 Upper limit curve example

February 19, 2006External Triggers Group8 Upper limits on hrss for S2, S3, S4 runs (sine-gaussians, Q = 8.9, 250 Hz)