15 maja 2024 roku o godzinie 13:15 w sali 143 odb\u0119dzie si\u0119 seminarium Instytutu Fizyki, na kt\u00f3rym
\nProf. Tadeusz Wibig z Wydzia\u0142u Fizyki i Informatyki Stosowanej Uniwersytetu \u0141\u00f3dzkiego
\nwyg\u0142osi referat pt.: \u201eIntermittency in cosmic ray showers and its possible consequences\u201d.<\/p>\n
Abstract:
\nIn the simulation calculations that form the basis for interpreting data
\nfrom EAS arrays at higher primary particle energies, we are dealing
\nwith millions of particles passing through the atmosphere.
\nIn order to speed up the calculations or to make them generally feasible,
\nthe 'thinning’ method has been used for about half a century.
\nThis method consists in eliminating a fraction of the particles
\nfrom the cascade and in assigning an appropriate statistical weight
\nto the remaining particles. Such an approach is perfectly correct
\nif we are dealing with average images of showers, but it cannot describe
\nthe fluctuations in the number of particles measured by any particular
\nsingle detector. The standard approach is to assume that the particles
\nin a shower reach the ground independently. Their numbers are assumed
\nto fluctuate poissonically. This approximation does not allow a correct
\ninterpretation of the results of measurements of very small showers.
\nIt is also not entirely correct at higher energies, especially in detectors
\nfar from the shower axis where particle densities are low.
\nThe question is whether the assumption that the particles in the shower
\nare independent leads to systematic biases in the interpretation of
\nthe shower data.
\nUsing accurate simulations, we found the magnitude of the particle correlations
\nand showed that a negative binomial distribution better describes
\nthese distributions.
\nBy modifying the procedures for determining shower parameters, we have shown
\nthat changing the multiplicity statistics can change the estimated
\nshower sizes by up to a few percent.<\/p>\n","protected":false},"excerpt":{"rendered":"
15 maja 2024 roku o godzinie 13:15 w sali 143 odb\u0119dzie si\u0119 seminarium Instytutu Fizyki, na kt\u00f3rym Prof. Tadeusz Wibig z Wydzia\u0142u Fizyki i Informatyki Stosowanej Uniwersytetu \u0141\u00f3dzkiego wyg\u0142osi referat pt.: \u201eIntermittency in cosmic ray showers and its possible consequences\u201d. Abstract: In the simulation calculations that form the basis for interpreting data from EAS arrays […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-1373","post","type-post","status-publish","format-standard","hentry","category-seminaria"],"_links":{"self":[{"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/1373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/comments?post=1373"}],"version-history":[{"count":1,"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/1373\/revisions"}],"predecessor-version":[{"id":1374,"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/posts\/1373\/revisions\/1374"}],"wp:attachment":[{"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/media?parent=1373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/categories?post=1373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fizyka.ujk.edu.pl\/index.php\/wp-json\/wp\/v2\/tags?post=1373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}