Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys
Multiple tracers of the cosmic density field, with different bias, number and luminosity evolution, can be used to measure the large-scale properties of the Universe. We show how an optimal combination of tracers can be used to detect general-relativistic effects in the observed density of sources....
| Main Authors: | , |
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| Format: | Journal article |
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American Physical Society
2015
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| _version_ | 1797076663928881152 |
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| author | Alonso, D Ferreira, P |
| author_facet | Alonso, D Ferreira, P |
| author_sort | Alonso, D |
| collection | OXFORD |
| description | Multiple tracers of the cosmic density field, with different bias, number and luminosity evolution, can be used to measure the large-scale properties of the Universe. We show how an optimal combination of tracers can be used to detect general-relativistic effects in the observed density of sources. We forecast for the detectability of these effects, as well as measurements of primordial non-Gaussianity and large-scale lensing magnification with current and upcoming large-scale structure experiments. In particular we quantify the significance of these detections in the short term with experiments such as the Dark Energy Survey (DES), and in the long term with the Large Synoptic Survey Telescope (LSST) and the Square Kilometre Array (SKA). We review the main observational challenges that must be overcome to carry out these measurements. |
| first_indexed | 2024-03-07T00:06:56Z |
| format | Journal article |
| id | oxford-uuid:77dac2a5-3532-4bb2-8c4c-5c4cd3f10867 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:06:56Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:77dac2a5-3532-4bb2-8c4c-5c4cd3f108672022-03-26T20:26:55ZConstraining ultralarge-scale cosmology with multiple tracers in optical and radio surveysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:77dac2a5-3532-4bb2-8c4c-5c4cd3f10867Symplectic Elements at OxfordAmerican Physical Society2015Alonso, DFerreira, PMultiple tracers of the cosmic density field, with different bias, number and luminosity evolution, can be used to measure the large-scale properties of the Universe. We show how an optimal combination of tracers can be used to detect general-relativistic effects in the observed density of sources. We forecast for the detectability of these effects, as well as measurements of primordial non-Gaussianity and large-scale lensing magnification with current and upcoming large-scale structure experiments. In particular we quantify the significance of these detections in the short term with experiments such as the Dark Energy Survey (DES), and in the long term with the Large Synoptic Survey Telescope (LSST) and the Square Kilometre Array (SKA). We review the main observational challenges that must be overcome to carry out these measurements. |
| spellingShingle | Alonso, D Ferreira, P Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys |
| title | Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys |
| title_full | Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys |
| title_fullStr | Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys |
| title_full_unstemmed | Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys |
| title_short | Constraining ultralarge-scale cosmology with multiple tracers in optical and radio surveys |
| title_sort | constraining ultralarge scale cosmology with multiple tracers in optical and radio surveys |
| work_keys_str_mv | AT alonsod constrainingultralargescalecosmologywithmultipletracersinopticalandradiosurveys AT ferreirap constrainingultralargescalecosmologywithmultipletracersinopticalandradiosurveys |