Galaxy number counts at second order: an independent approach
dc.contributor.author | Fuentes, JL | |
dc.contributor.author | Hidalgo, JC | |
dc.contributor.author | Malik, KA | |
dc.date.accessioned | 2021-04-07T14:50:59Z | |
dc.date.available | 2021-04-07T14:50:59Z | |
dc.date.issued | 2021-02-18 | |
dc.identifier.issn | 0264-9381 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/71105 | |
dc.description.abstract | Next generation surveys will be capable of determining cosmological parameters beyond percent level. To match this precision, theoretical descriptions should look beyond the linear perturbations to approximate the observables in large scale structure. A quantity of interest is the Number density of galaxies detected by our instruments. This has been focus of interest recently, and several efforts have been made to explain relativistic effects theoretically, thereby testing the full theory. However, the results at nonlinear level from previous works are in disagreement. We present a new and independent approach to computing the relativistic galaxy number counts to second order in cosmological perturbation theory. We derive analytical expressions for the full second order relativistic observed redshift, for the angular diameter distance and for the volume spanned by a survey. Finally, we compare our results with previous works which compute the general distance-redshift relation, finding that our result is in agreement at linear order. | en_US |
dc.format.extent | 065014 - ? | |
dc.publisher | IOP Publishing | en_US |
dc.relation.ispartof | Classical and Quantum Gravity | |
dc.rights | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.title | Galaxy number counts at second order: an independent approach | en_US |
dc.type | Article | en_US |
dc.rights.holder | © 2021 The Author(s). Published by IOP Publishing Ltd | |
dc.identifier.doi | 10.1088/1361-6382/abd95c | |
pubs.issue | 6 | en_US |
pubs.notes | Not known | en_US |
pubs.volume | 38 | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
qmul.funder | Astronomy Research at Queen Mary::Science and Technology Facilities Council | en_US |
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Except where otherwise noted, this item's license is described as Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.