Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
DOI: | 10.1093/mnras/stz1514 |
Texto Completo: | http://dx.doi.org/10.1093/mnras/stz1514 http://hdl.handle.net/11449/185965 |
Resumo: | We use data from the first-year observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature. We test our methodology in a sample of 1800 DES Y1-like mock catalogues. We use the pseudo-C-l, method to estimate the APS and the mock catalogues to estimate its covariance matrix. We use templates to model the measured spectra and estimate template parameters firstly from the G's of the mocks using two different methods, a maximum likelihood estimator and a Markov Chain Monte Carlo, finding consistent results with a good reduced chi(2). Robustness tests are performed to estimate the impact of different choices of settings used in our analysis. Finally, we apply our method to a galaxy sample constructed from DES Y1 data specifically for LSS studies. This catalogue comprises galaxies within an effective area of 1318 deg(2) and 0.6 < z < 1.0. We find that the DES Y1 data favour a model with BAO at the 2.6 sigma C.L. However, the goodness of fit is somewhat poor, with chi(2)/(d.o.f.) = 1.49. We identify a possible cause showing that using a theoretical covariance matrix obtained from C-l's that are better adjusted to data results in an improved value of chi(2)/(dof) = 1.36 which is similar to the value obtained with the real-space analysis. Our results correspond to a distance measurement of D-A (Z(eff) = 0.81)/r(d) = 10.65 +/- 0.49, consistent with the main DES BAO findings. This is a companion paper to the main DES BAO article showing the details of the harmonic space analysis. |
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Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrumcosmology: observationslarge-scale structure of UniverseWe use data from the first-year observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature. We test our methodology in a sample of 1800 DES Y1-like mock catalogues. We use the pseudo-C-l, method to estimate the APS and the mock catalogues to estimate its covariance matrix. We use templates to model the measured spectra and estimate template parameters firstly from the G's of the mocks using two different methods, a maximum likelihood estimator and a Markov Chain Monte Carlo, finding consistent results with a good reduced chi(2). Robustness tests are performed to estimate the impact of different choices of settings used in our analysis. Finally, we apply our method to a galaxy sample constructed from DES Y1 data specifically for LSS studies. This catalogue comprises galaxies within an effective area of 1318 deg(2) and 0.6 < z < 1.0. We find that the DES Y1 data favour a model with BAO at the 2.6 sigma C.L. However, the goodness of fit is somewhat poor, with chi(2)/(d.o.f.) = 1.49. We identify a possible cause showing that using a theoretical covariance matrix obtained from C-l's that are better adjusted to data results in an improved value of chi(2)/(dof) = 1.36 which is similar to the value obtained with the real-space analysis. Our results correspond to a distance measurement of D-A (Z(eff) = 0.81)/r(d) = 10.65 +/- 0.49, consistent with the main DES BAO findings. This is a companion paper to the main DES BAO article showing the details of the harmonic space analysis.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)U.S. Department of EnergyU.S. National Science FoundationMinistry of Science and Education of SpainScience and Technology Facilities Council of the United KingdomHigher Education Fending Council for EnglandNational Center for Supercomputing Applications at the University of Illinois at Urbana-ChampaignKavli Institute of Cosmological Physics at the University of ChicagoCenter for Cosmology and Astro-Particle Physics at the Ohio State UniversityMitchell Institute for Fundamental Physics and Astronomy at Texas AM UniversityFinanciadora de Estudos e ProjetosFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Ministerio da Ciencia, Tecnologia e InovacaoDeutsche ForschungsgemeinschaftCollaborating Institutions in the Dark Energy SurveyArgonne National LaboratoryUniversity of California at Santa CruzUniversity of CambridgeCentro de Investigaciones Energeticas, Medioambientales y Tecnologicas-MadridUniversity of ChicagoUniversity College LondonDES-Brazil ConsortiumUniversity of EdinburghEidgenossische Technische Hochschule (ETH) ZurichFermi National Accelerator LaboratoryUniversity of Illinois at Urbana-ChampaignInstitut de Ciencies de l'Espai (IEEC/CSIC)Institut de Fisica d'Altes EnergiesLawrence Berkeley National LaboratoryLudwig-Maximilians Universitat Munchenassociated Excellence Cluster UniverseUniversity of MichiganNational Optical Astronomy ObservatoryUniversity of NottinghamOhio State UniversityUniversity of PennsylvaniaUniversity of PortsmouthSLAC National Accelerator Laboratory, Stanford UniversityUniversity of SussexTexas AM UniversityOzDES Membership ConsortiumNational Science foundationMINECOEuropean UnionCERCA program of the Generalitat de CatalunyaEuropean Research Council under the European Union's Seventh Framework Program (FP7/2007-2013)Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)U.S. Department of Energy, Office of Science, Office of High Energy PhysicsUniv Sao Paulo, Inst Fis, Dept Fis Matemat, CP 66318, BR-05314970 Sao Paulo, SP, BrazilLab Interinst E Astron LIneA, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, BrazilUniv Estadual Paulista, Inst Fis Teor, Sao Paulo, BrazilUniv Estadual Paulista, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, Sao Paulo, BrazilUniv Geneva, Dept Phys Theor, 24 Quai Ernest Ansermet, CH-1211 Geneva, SwitzerlandUniv Geneva, Ctr Astroparticle Phys, 24 Quai Ernest Ansermet, CH-1211 Geneva, SwitzerlandUniv Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP, BrazilObserv Nacl, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, BrazilUniv Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, EnglandIEEC, E-08193 Barcelona, SpainCSIC, Inst Space Sci ICE, Campus UAB,Carrer Can Magrans S-N, E-08193 Barcelona, SpainOhio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USAUniv Autonoma Madrid, CSIC, Inst Fis Teor, E-28049 Madrid, SpainNatl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, ChileUCL, Dept Phys & Astron, Gower St, London WC1E 6BT, EnglandRhodes Univ, Dept Phys & Elect, POB 94, ZA-6140 Grahamstown, South AfricaFermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USAObserv Carnegie Inst Washington, 813 Santa Barbara St, Pasadena, CA 91101 USACNRS, UMR 7095, Inst Astrophys Paris, F-75014 Paris, FranceUPMC Univ Paris 06, Sorbonne Univ, UMR 7095, Inst Astrophys Paris, F-75014 Paris, FranceUniv Manchester, Sch Phys & Astron, Jodrell Bank, Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs, EnglandStanford Univ, Kavli Inst Particle Astrophys & Cosmol, POB 2450, Stanford, CA 94305 USASLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USAUniv Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USANatl Ctr Supercomp Applicat, 1205 West Clark St, Urbana, IL 61801 USABarcelona Inst Sci & Technol, IFAE, Campus UAB, E-08193 Bellaterra, Barcelona, SpainUniv Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USAUniv Penn, Dept Phys & Astron, Philadelphia, PA 19104 USACtr Invest Energet Medioambientales & Tecnol CIEM, Madrid, SpainIIT Hyderabad, Dept Phys, Kandi 502285, Telangana, IndiaUniv Michigan, Dept Astron, Ann Arbor, MI 48109 USAUniv Michigan, Dept Phys, Ann Arbor, MI 48109 USAUniv Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, EnglandUniv Cambridge, Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, EnglandLudwig Maximilians Univ Munchen, Fak Phys, Univ Sternwarte, Scheinerstr 1, D-81679 Munich, GermanySanta Cruz Inst Particle Phys, Santa Cruz, CA 95064 USAOhio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USAMax Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, GermanyHarvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USASteward Observ, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85721 USACALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USAAustralian Astron Observ, N Ryde, NSW 2113, AustraliaTexas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USATexas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USAInst Catalana Recerca & Estudis Avancats, E-08010 Barcelona, SpainUniv Waterloo, Dept Phys & Astron, 200 Univ Ave W, Waterloo, ON N2L 3G1, CanadaPerimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON N2L 2Y5, CanadaUniv Sussex, Dept Phys & Astron, Pevensey Bldg, Brighton BN1 9QH, E Sussex, EnglandUniv Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, EnglandBrandeis Univ, Dept Phys, 415 South St, Waltham, MA 02453 USAOak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USAUniv Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, ScotlandUniv Estadual Paulista, Inst Fis Teor, Sao Paulo, BrazilUniv Estadual Paulista, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, Sao Paulo, BrazilCNPq: 141935/2014-6CNPq: 465376/2014-2National Science foundation: AST-1138766National Science foundation: AST-1536171MINECO: AYA2015-71825MINECO: ESP2015-66861MINECO: FPA2015-68048MINECO: SEV-2016-0588MINECO: SEV-2016-0597MINECO: MDM-2015-0509European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013): 240672European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013): 291329European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013): 306478Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO): CE110001020U.S. Department of Energy, Office of Science, Office of High Energy Physics: DE-AC02-07CH11359Oxford Univ PressUniversidade de São Paulo (USP)Lab Interinst E Astron LIneAUniversidade Estadual Paulista (Unesp)Univ GenevaUniversidade Estadual de Campinas (UNICAMP)Observ NaclUniv PortsmouthIEECCSICOhio State UnivUniv Autonoma MadridNatl Opt Astron ObservUCLRhodes UnivFermilab Natl Accelerator LabObserv Carnegie Inst WashingtonCNRSUPMC Univ Paris 06Univ ManchesterStanford UnivSLAC Natl Accelerator LabUniv IllinoisNatl Ctr Supercomp ApplicatBarcelona Inst Sci & TechnolUniv ChicagoUniv PennCtr Invest Energet Medioambientales & Tecnol CIEMIIT HyderabadUniv MichiganUniv CambridgeLudwig Maximilians Univ MunchenSanta Cruz Inst Particle PhysMax Planck Inst Extraterr PhysHarvard Smithsonian Ctr AstrophysSteward ObservCALTECHAustralian Astron ObservTexas A&M UnivInst Catalana Recerca & Estudis AvancatsUniv WaterlooPerimeter Inst Theoret PhysUniv SussexUniv SouthamptonBrandeis UnivOak Ridge Natl LabUniv EdinburghCamacho, H.Kokron, N.Andrade-Oliveira, F. [UNESP]Rosenfeld, R. [UNESP]Lima, M.Lacasa, F.Sobreira, F.Da Costa, L. N.Avila, S.Chan, K. C.Crocce, M.Ross, A. J.Troja, A. [UNESP]Garcia-Bellido, J.Abbott, T. M. C.Abdalla, F. B.Allam, S.Annis, J.Bernstein, R. A.Bertin, E.Bridle, S. L.Brooks, D.Buckley-Geer, E.Burke, D. L.Carnero Rosell, A.Kind, M. CarrascoCarretero, J.Castander, F. J.Cawthon, R.Cunha, C. E.D'Andrea, C. B.De Vicente, J.Desai, S.Diehl, H. T.Doel, P.Estrada, J.Evrard, A. E.Flaugher, B.Fosalba, P.Frieman, J.Gerdes, D. W.Giannantonio, T.Gruendl, R. A.Gschwend, J.Gutierrez, G.Hollowood, D. L.Honscheid, K.Hoyle, B.James, D. J.Johnson, M. W. G.Johnson, M. D.Kent, S.Kirk, D.Krause, E.Kuehn, K.Kuropatkin, N.Lin, H.Marshall, J. L.Miquel, R.Percival, W. J.Plazas, A. A.Romer, A. K.Roodman, A.Sanchez, E.Schubnell, M.Sevilla-Noarbe, I.Smith, M.Smith, R. C.Soares-Santos, M.Suchyta, E.Swanson, M. E. C.Tarle, G.Thomas, D.Tucker, D. L.Walker, A. R.Zuntz, J.DES Collaboration2019-10-04T12:40:04Z2019-10-04T12:40:04Z2019-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3870-3883http://dx.doi.org/10.1093/mnras/stz1514Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 487, n. 3, p. 3870-3883, 2019.0035-8711http://hdl.handle.net/11449/18596510.1093/mnras/stz1514WOS:000478053200066Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMonthly Notices Of The Royal Astronomical Societyinfo:eu-repo/semantics/openAccess2021-10-22T22:23:36Zoai:repositorio.unesp.br:11449/185965Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:32:57.962881Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
title |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
spellingShingle |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum Camacho, H. cosmology: observations large-scale structure of Universe Camacho, H. cosmology: observations large-scale structure of Universe |
title_short |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
title_full |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
title_fullStr |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
title_full_unstemmed |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
title_sort |
Dark Energy Survey Year 1 results: measurement of the galaxy angular power spectrum |
author |
Camacho, H. |
author_facet |
Camacho, H. Camacho, H. Kokron, N. Andrade-Oliveira, F. [UNESP] Rosenfeld, R. [UNESP] Lima, M. Lacasa, F. Sobreira, F. Da Costa, L. N. Avila, S. Chan, K. C. Crocce, M. Ross, A. J. Troja, A. [UNESP] Garcia-Bellido, J. Abbott, T. M. C. Abdalla, F. B. Allam, S. Annis, J. Bernstein, R. A. Bertin, E. Bridle, S. L. Brooks, D. Buckley-Geer, E. Burke, D. L. Carnero Rosell, A. Kind, M. Carrasco Carretero, J. Castander, F. J. Cawthon, R. Cunha, C. E. D'Andrea, C. B. De Vicente, J. Desai, S. Diehl, H. T. Doel, P. Estrada, J. Evrard, A. E. Flaugher, B. Fosalba, P. Frieman, J. Gerdes, D. W. Giannantonio, T. Gruendl, R. A. Gschwend, J. Gutierrez, G. Hollowood, D. L. Honscheid, K. Hoyle, B. James, D. J. Johnson, M. W. G. Johnson, M. D. Kent, S. Kirk, D. Krause, E. Kuehn, K. Kuropatkin, N. Lin, H. Marshall, J. L. Miquel, R. Percival, W. J. Plazas, A. A. Romer, A. K. Roodman, A. Sanchez, E. Schubnell, M. Sevilla-Noarbe, I. Smith, M. Smith, R. C. Soares-Santos, M. Suchyta, E. Swanson, M. E. C. Tarle, G. Thomas, D. Tucker, D. L. Walker, A. R. Zuntz, J. DES Collaboration Kokron, N. Andrade-Oliveira, F. [UNESP] Rosenfeld, R. [UNESP] Lima, M. Lacasa, F. Sobreira, F. Da Costa, L. N. Avila, S. Chan, K. C. Crocce, M. Ross, A. J. Troja, A. [UNESP] Garcia-Bellido, J. Abbott, T. M. C. Abdalla, F. B. Allam, S. Annis, J. Bernstein, R. A. Bertin, E. Bridle, S. L. Brooks, D. Buckley-Geer, E. Burke, D. L. Carnero Rosell, A. Kind, M. Carrasco Carretero, J. Castander, F. J. Cawthon, R. Cunha, C. E. D'Andrea, C. B. De Vicente, J. Desai, S. Diehl, H. T. Doel, P. Estrada, J. Evrard, A. E. Flaugher, B. Fosalba, P. Frieman, J. Gerdes, D. W. Giannantonio, T. Gruendl, R. A. Gschwend, J. Gutierrez, G. Hollowood, D. L. Honscheid, K. Hoyle, B. James, D. J. Johnson, M. W. G. Johnson, M. D. Kent, S. Kirk, D. Krause, E. Kuehn, K. Kuropatkin, N. Lin, H. Marshall, J. L. Miquel, R. Percival, W. J. Plazas, A. A. Romer, A. K. Roodman, A. Sanchez, E. Schubnell, M. Sevilla-Noarbe, I. Smith, M. Smith, R. C. Soares-Santos, M. Suchyta, E. Swanson, M. E. C. Tarle, G. Thomas, D. Tucker, D. L. Walker, A. R. Zuntz, J. DES Collaboration |
author_role |
author |
author2 |
Kokron, N. Andrade-Oliveira, F. [UNESP] Rosenfeld, R. [UNESP] Lima, M. Lacasa, F. Sobreira, F. Da Costa, L. N. Avila, S. Chan, K. C. Crocce, M. Ross, A. J. Troja, A. [UNESP] Garcia-Bellido, J. Abbott, T. M. C. Abdalla, F. B. Allam, S. Annis, J. Bernstein, R. A. Bertin, E. Bridle, S. L. Brooks, D. Buckley-Geer, E. Burke, D. L. Carnero Rosell, A. Kind, M. Carrasco Carretero, J. Castander, F. J. Cawthon, R. Cunha, C. E. D'Andrea, C. B. De Vicente, J. Desai, S. Diehl, H. T. Doel, P. Estrada, J. Evrard, A. E. Flaugher, B. Fosalba, P. Frieman, J. Gerdes, D. W. Giannantonio, T. Gruendl, R. A. Gschwend, J. Gutierrez, G. Hollowood, D. L. Honscheid, K. Hoyle, B. James, D. J. Johnson, M. W. G. Johnson, M. D. Kent, S. Kirk, D. Krause, E. Kuehn, K. Kuropatkin, N. Lin, H. Marshall, J. L. Miquel, R. Percival, W. J. Plazas, A. A. Romer, A. K. Roodman, A. Sanchez, E. Schubnell, M. Sevilla-Noarbe, I. Smith, M. Smith, R. C. Soares-Santos, M. Suchyta, E. Swanson, M. E. C. Tarle, G. Thomas, D. Tucker, D. L. Walker, A. R. Zuntz, J. DES Collaboration |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Lab Interinst E Astron LIneA Universidade Estadual Paulista (Unesp) Univ Geneva Universidade Estadual de Campinas (UNICAMP) Observ Nacl Univ Portsmouth IEEC CSIC Ohio State Univ Univ Autonoma Madrid Natl Opt Astron Observ UCL Rhodes Univ Fermilab Natl Accelerator Lab Observ Carnegie Inst Washington CNRS UPMC Univ Paris 06 Univ Manchester Stanford Univ SLAC Natl Accelerator Lab Univ Illinois Natl Ctr Supercomp Applicat Barcelona Inst Sci & Technol Univ Chicago Univ Penn Ctr Invest Energet Medioambientales & Tecnol CIEM IIT Hyderabad Univ Michigan Univ Cambridge Ludwig Maximilians Univ Munchen Santa Cruz Inst Particle Phys Max Planck Inst Extraterr Phys Harvard Smithsonian Ctr Astrophys Steward Observ CALTECH Australian Astron Observ Texas A&M Univ Inst Catalana Recerca & Estudis Avancats Univ Waterloo Perimeter Inst Theoret Phys Univ Sussex Univ Southampton Brandeis Univ Oak Ridge Natl Lab Univ Edinburgh |
dc.contributor.author.fl_str_mv |
Camacho, H. Kokron, N. Andrade-Oliveira, F. [UNESP] Rosenfeld, R. [UNESP] Lima, M. Lacasa, F. Sobreira, F. Da Costa, L. N. Avila, S. Chan, K. C. Crocce, M. Ross, A. J. Troja, A. [UNESP] Garcia-Bellido, J. Abbott, T. M. C. Abdalla, F. B. Allam, S. Annis, J. Bernstein, R. A. Bertin, E. Bridle, S. L. Brooks, D. Buckley-Geer, E. Burke, D. L. Carnero Rosell, A. Kind, M. Carrasco Carretero, J. Castander, F. J. Cawthon, R. Cunha, C. E. D'Andrea, C. B. De Vicente, J. Desai, S. Diehl, H. T. Doel, P. Estrada, J. Evrard, A. E. Flaugher, B. Fosalba, P. Frieman, J. Gerdes, D. W. Giannantonio, T. Gruendl, R. A. Gschwend, J. Gutierrez, G. Hollowood, D. L. Honscheid, K. Hoyle, B. James, D. J. Johnson, M. W. G. Johnson, M. D. Kent, S. Kirk, D. Krause, E. Kuehn, K. Kuropatkin, N. Lin, H. Marshall, J. L. Miquel, R. Percival, W. J. Plazas, A. A. Romer, A. K. Roodman, A. Sanchez, E. Schubnell, M. Sevilla-Noarbe, I. Smith, M. Smith, R. C. Soares-Santos, M. Suchyta, E. Swanson, M. E. C. Tarle, G. Thomas, D. Tucker, D. L. Walker, A. R. Zuntz, J. DES Collaboration |
dc.subject.por.fl_str_mv |
cosmology: observations large-scale structure of Universe |
topic |
cosmology: observations large-scale structure of Universe |
description |
We use data from the first-year observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature. We test our methodology in a sample of 1800 DES Y1-like mock catalogues. We use the pseudo-C-l, method to estimate the APS and the mock catalogues to estimate its covariance matrix. We use templates to model the measured spectra and estimate template parameters firstly from the G's of the mocks using two different methods, a maximum likelihood estimator and a Markov Chain Monte Carlo, finding consistent results with a good reduced chi(2). Robustness tests are performed to estimate the impact of different choices of settings used in our analysis. Finally, we apply our method to a galaxy sample constructed from DES Y1 data specifically for LSS studies. This catalogue comprises galaxies within an effective area of 1318 deg(2) and 0.6 < z < 1.0. We find that the DES Y1 data favour a model with BAO at the 2.6 sigma C.L. However, the goodness of fit is somewhat poor, with chi(2)/(d.o.f.) = 1.49. We identify a possible cause showing that using a theoretical covariance matrix obtained from C-l's that are better adjusted to data results in an improved value of chi(2)/(dof) = 1.36 which is similar to the value obtained with the real-space analysis. Our results correspond to a distance measurement of D-A (Z(eff) = 0.81)/r(d) = 10.65 +/- 0.49, consistent with the main DES BAO findings. This is a companion paper to the main DES BAO article showing the details of the harmonic space analysis. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T12:40:04Z 2019-10-04T12:40:04Z 2019-08-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1093/mnras/stz1514 Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 487, n. 3, p. 3870-3883, 2019. 0035-8711 http://hdl.handle.net/11449/185965 10.1093/mnras/stz1514 WOS:000478053200066 |
url |
http://dx.doi.org/10.1093/mnras/stz1514 http://hdl.handle.net/11449/185965 |
identifier_str_mv |
Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 487, n. 3, p. 3870-3883, 2019. 0035-8711 10.1093/mnras/stz1514 WOS:000478053200066 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Monthly Notices Of The Royal Astronomical Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3870-3883 |
dc.publisher.none.fl_str_mv |
Oxford Univ Press |
publisher.none.fl_str_mv |
Oxford Univ Press |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1822182563541680128 |
dc.identifier.doi.none.fl_str_mv |
10.1093/mnras/stz1514 |