A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation

The Hubble constant H 0 and matter density Ωm of the universe are measured using the latest γ-ray attenuation results from Fermi-LAT and Cerenkov telescopes. This methodology is based upon the fact that the extragalactic background light supplies opacity for very high energy photons via photon-photo...

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Detalles Bibliográficos
Autores: Domínguez, A., Wojtak, R., Finke, J., Ajello, Marco, Helgason, K., Prada, Francisco, Desai, A., Paliya, V., Marcotulli, L., Hartmann, D.H.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/197020
Acceso en línea:http://hdl.handle.net/10261/197020
Access Level:acceso abierto
Palabra clave:BL Lacertae objects: general
Cosmic background radiation
Cosmology: observations
Diffuse radiation
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spelling A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuationDomínguez, A.Wojtak, R.Finke, J.Ajello, MarcoHelgason, K.Prada, FranciscoDesai, A.Paliya, V.Marcotulli, L.Hartmann, D.H.BL Lacertae objects: generalCosmic background radiationCosmology: observationsDiffuse radiationddc:520The Hubble constant H 0 and matter density Ωm of the universe are measured using the latest γ-ray attenuation results from Fermi-LAT and Cerenkov telescopes. This methodology is based upon the fact that the extragalactic background light supplies opacity for very high energy photons via photon-photon interaction. The amount of γ-ray attenuation along the line of sight depends on the expansion rate and matter content of the universe. This novel strategy results in a value of H0 = 67.4-6.2 +6.0 km s-1 Mpc-1 and Ωm = 0.14-0.07 +0.06. These estimates are independent and complementary to those based on the distance ladder, cosmic microwave background (CMB), clustering with weak lensing, and strong lensing data. We also produce a joint likelihood analysis of our results from γ-rays and those from more mature methodologies, excluding the CMB, yielding a combined value of H 0 = 66.6 ± 1.6 km s-1 Mpc-1 and Ωm = 0.29 ± 0.02. © 2019 The American Astronomical Society. All rights reserved.A.D. is thankful for the support of the Ramn y Cajal program from the Spanish MINECO. R.W. was supported by a grant from VILLUM FONDEN (Project No. 16599). J.F. is supported by NASA under contract S-15633Y. M.A. and A.D. acknowledge funding support from NSF through grant AST-1715256. K.H. acknowledges support from the Icelandic Research Fund, grant No. 173728-051. D.H. and L.M. acknowledge funding support from NASA through grant 80NSSC18K1720.Peer reviewedIOP PublishingMinisterio de Economía y Competitividad (España)European CommissionVillum FondenNASANational Science Foundation (US)Icelandic Research FundConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/197020reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.3847/1538-4357/ab4a0eSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1970202026-05-22T06:33:51Z
dc.title.none.fl_str_mv A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
title A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
spellingShingle A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
Domínguez, A.
BL Lacertae objects: general
Cosmic background radiation
Cosmology: observations
Diffuse radiation
ddc:520
title_short A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
title_full A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
title_fullStr A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
title_full_unstemmed A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
title_sort A new measurement of the Hubble constant and matter content of the universe using extragalactic background light γ-ray attenuation
dc.creator.none.fl_str_mv Domínguez, A.
Wojtak, R.
Finke, J.
Ajello, Marco
Helgason, K.
Prada, Francisco
Desai, A.
Paliya, V.
Marcotulli, L.
Hartmann, D.H.
author Domínguez, A.
author_facet Domínguez, A.
Wojtak, R.
Finke, J.
Ajello, Marco
Helgason, K.
Prada, Francisco
Desai, A.
Paliya, V.
Marcotulli, L.
Hartmann, D.H.
author_role author
author2 Wojtak, R.
Finke, J.
Ajello, Marco
Helgason, K.
Prada, Francisco
Desai, A.
Paliya, V.
Marcotulli, L.
Hartmann, D.H.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
European Commission
Villum Fonden
NASA
National Science Foundation (US)
Icelandic Research Fund
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv BL Lacertae objects: general
Cosmic background radiation
Cosmology: observations
Diffuse radiation
ddc:520
topic BL Lacertae objects: general
Cosmic background radiation
Cosmology: observations
Diffuse radiation
ddc:520
description The Hubble constant H 0 and matter density Ωm of the universe are measured using the latest γ-ray attenuation results from Fermi-LAT and Cerenkov telescopes. This methodology is based upon the fact that the extragalactic background light supplies opacity for very high energy photons via photon-photon interaction. The amount of γ-ray attenuation along the line of sight depends on the expansion rate and matter content of the universe. This novel strategy results in a value of H0 = 67.4-6.2 +6.0 km s-1 Mpc-1 and Ωm = 0.14-0.07 +0.06. These estimates are independent and complementary to those based on the distance ladder, cosmic microwave background (CMB), clustering with weak lensing, and strong lensing data. We also produce a joint likelihood analysis of our results from γ-rays and those from more mature methodologies, excluding the CMB, yielding a combined value of H 0 = 66.6 ± 1.6 km s-1 Mpc-1 and Ωm = 0.29 ± 0.02. © 2019 The American Astronomical Society. All rights reserved.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/197020
url http://hdl.handle.net/10261/197020
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.3847/1538-4357/ab4a0e
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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