Spectra and statistics of cosmic string perturbations on the microwave background: A Monte Carlo approach
| dc.contributor.author | Gilbert, Andrea M. | en |
| dc.contributor.author | Perivolaropoulos, Leandros | en |
| dc.date.accessioned | 2015-11-24T18:35:08Z | |
| dc.date.available | 2015-11-24T18:35:08Z | |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/17050 | |
| dc.rights | Default Licence | - |
| dc.title | Spectra and statistics of cosmic string perturbations on the microwave background: A Monte Carlo approach | en |
| heal.abstract | Using Monte Carlo simulations of perturbations induced by cosmic strings on the microwave background, we demonstrate the scale invariance of string fluctuation patterns. By comparing string-induced fluctuation patterns with gaussian random phase ones, we show that the non-gaussian signatures of the string patterns are detectable by tests based on the moments of the distributions only for angular scales smaller than a few arcminutes and for maps based on the gradient of temperature fluctuations. However, we find that tests of the gaussianity of the moments fail when we include a reasonable amount of instrumental noise in a pattern. Signal to noise ratios of $3.3$ or greater completely suppress a string pattern's non-gaussian features even at the highest resolutions. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.journalName | Astropart.Phys. | en |
| heal.journalType | peer reviewed | - |
| heal.publicationDate | 1995 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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