@Article{BernuiFerrSouz:2008:LaAnDi,
               author = "Bernui, Armando and Ferreira, Ivan Soares and Souza, Carlos 
                         Alexandre Wuensche de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "On the Large-Scale Angular Distribution of Short Gamma-Ray 
                         Bursts",
              journal = "Astrophysical Journal",
                 year = "2008",
               volume = "673",
               number = "2",
                pages = "968--971",
                month = "Feb.",
             keywords = "gamma rays : bursts, large-scale structure of universe, methods : 
                         statistical.",
             abstract = "We investigate the large-scale angular distribution of the short 
                         gamma-ray bursts (SGRBs) from BATSE experiment, using a new 
                         coordinate-free method. The analyses performed take into account 
                         the angular correlations induced by the nonuniform sky exposure 
                         during the experiment, and the uncertainty in the measured angular 
                         coordinates. Comparing the large-scale angular correlations from 
                         the data with those expected from simulations using the exposure 
                         function, we find similar features. In addition, confronting the 
                         large-angle correlations computed from the data with those 
                         obtained from simulated maps produced under the assumption of 
                         statistical isotropy, we found that they are incompatible at 95% 
                         confidence level. However, such differences are restricted to the 
                         angular scales 36 degrees-45 degrees, which are likely to be due 
                         to the nonuniform sky exposure. This result strongly suggests that 
                         the set of SGRBs from BATSE are intrinsically isotropic. Moreover, 
                         we also investigated a possible large-angle correlation of these 
                         data with the supergalactic plane. No evidence for such 
                         large-scale anisotropy was found.",
                 issn = "0004-637X and 1538-4357",
             language = "en",
           targetfile = "on the large.pdf",
        urlaccessdate = "11 maio 2024"
}