BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals
We use Minkowski functionals (MFs) to constrain a primordial non-Gaussian contribution to the cosmic microwave background intensity field as observed in the 150- and 145-GHz BOOMERanG maps from the 1998 and 2003 flights, respectively, performing for the first time a joint analysis of the two data se...
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| Format: | Article |
| Language: | en_US |
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Wiley Blackwell
2012
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| Online Access: | http://hdl.handle.net/1721.1/71995 https://orcid.org/0000-0001-7670-7190 |
| _version_ | 1826206332094513152 |
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| author | de Oliveira-Costa, Angelica Tegmark, Max Erik |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics de Oliveira-Costa, Angelica Tegmark, Max Erik |
| author_sort | de Oliveira-Costa, Angelica |
| collection | MIT |
| description | We use Minkowski functionals (MFs) to constrain a primordial non-Gaussian contribution to the cosmic microwave background intensity field as observed in the 150- and 145-GHz BOOMERanG maps from the 1998 and 2003 flights, respectively, performing for the first time a joint analysis of the two data sets. A perturbative expansion of the MF formulae in the limit of a weakly non-Gaussian field yields analytical formulae, derived by Hikage et al., which can be used to constrain the coupling parameter fNL without the need for non-Gaussian simulations. We find −770 < fNL < 500 at 95 per cent CL, significantly improving the previous constraints by De Troia et al. on the BOOMERanG 2003 data set. These are the best fNL limits to date for suborbital probes. |
| first_indexed | 2024-09-23T13:27:29Z |
| format | Article |
| id | mit-1721.1/71995 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:27:29Z |
| publishDate | 2012 |
| publisher | Wiley Blackwell |
| record_format | dspace |
| spelling | mit-1721.1/719952022-09-28T14:23:47Z BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals de Oliveira-Costa, Angelica Tegmark, Max Erik Massachusetts Institute of Technology. Department of Physics Tegmark, Max Erik de Oliveira-Costa, Angelica Tegmark, Max Erik We use Minkowski functionals (MFs) to constrain a primordial non-Gaussian contribution to the cosmic microwave background intensity field as observed in the 150- and 145-GHz BOOMERanG maps from the 1998 and 2003 flights, respectively, performing for the first time a joint analysis of the two data sets. A perturbative expansion of the MF formulae in the limit of a weakly non-Gaussian field yields analytical formulae, derived by Hikage et al., which can be used to constrain the coupling parameter fNL without the need for non-Gaussian simulations. We find −770 < fNL < 500 at 95 per cent CL, significantly improving the previous constraints by De Troia et al. on the BOOMERanG 2003 data set. These are the best fNL limits to date for suborbital probes. Natural Sciences and Engineering Research Council of Canada (NSERC) Canadian Institute for Advanced Research United States. National Aeronautics and Space Administration (award NAG5- 9251) United States. National Aeronautics and Space Administration (award NAG5-12723) National Science Foundation (U.S.) (award OPP-9980654) National Science Foundation (U.S.) (award OPP-0407592) 2012-08-06T20:21:30Z 2012-08-06T20:21:30Z 2010-08 2010-05 Article http://purl.org/eprint/type/JournalArticle 0035-8711 1365-8711 http://hdl.handle.net/1721.1/71995 Natoli, P. et al. “BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals.” Monthly Notices of the Royal Astronomical Society 408.3 (2010): 1658-1665. https://orcid.org/0000-0001-7670-7190 en_US http://dx.doi.org/10.1111/j.1365-2966.2010.17228.x Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Wiley Blackwell Prof. Tegmark via Mat Willmott |
| spellingShingle | de Oliveira-Costa, Angelica Tegmark, Max Erik BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals |
| title | BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals |
| title_full | BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals |
| title_fullStr | BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals |
| title_full_unstemmed | BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals |
| title_short | BOOMERanG constraints on primordial non-Gaussianity from analytical Minkowski functionals |
| title_sort | boomerang constraints on primordial non gaussianity from analytical minkowski functionals |
| url | http://hdl.handle.net/1721.1/71995 https://orcid.org/0000-0001-7670-7190 |
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