Statistical analysis of detection of, and upper limits on, dark matter lines
2007 (English)In: First GLAST Symposium / [ed] Ritz, S; Michelson, P; Meegan, C, 2007, Vol. 921, 586-587 p.Conference paper (Refereed)
In this note we present calculations of coverage and power for three different methods which could be used to calculate upper limits and/or claim discovery in a GLAST-LAT search fora dark matter line. The methods considered are Profile Likelihood, Bayesian factors and likelihood ratio confidence intervals and the calculations are done considering a simple benchmark model of two uncorrelated Poissonian measurements. Profile likelihood has the best coverage properties, the standard X-2 test the worst. For the power, the situation is vice-versa. In choosing a method one has to consider the false detection rate (1 - coverage) and counterweigh it to the possible achievable power.
Place, publisher, year, edition, pages
2007. Vol. 921, 586-587 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 921
dark matter, coverage, power, profile likelihood, Feldman-Cousins, Bayesian
IdentifiersURN: urn:nbn:se:kth:diva-39637DOI: 10.1063/1.2757464ISI: 000248569700210ScopusID: 2-s2.0-77949512571ISBN: 978-0-7354-0431-1OAI: oai:DiVA.org:kth-39637DiVA: diva2:440469
1st Gamma-ray Large Area Space Telescope Symposium, GLAST; Stanford, CA; 5 February 2007 through 8 February 2007