On the propagation of gravitational waves in a Lambda CDM universe

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dc.contributor.authorAlfaro, Jorge
dc.contributor.authorEspriu, Domenec
dc.contributor.authorGabbanelli, Luciano
dc.date.accessioned2024-01-10T13:51:30Z
dc.date.available2024-01-10T13:51:30Z
dc.date.issued2019
dc.description.abstractWe study here how the presence of non-zero matter density and a cosmological constant could affect the observation of gravitational waves in pulsar timing arrays. Conventionally, the effect of matter and cosmological constant is included by considering the redshift in frequency due to the expansion. However, there is an additional interesting effect due to the change of coordinates from the ones describing the geometry of the region where waves are produced to the ones used to measure the pulsar timing residuals. This change of coordinates is unavoidable as the strong gravitational field in a black hole merger distorts clocks and rules. Harmonic waves produced in such a merger become anharmonic when detected by a cosmological observer. The effect is tiny but appears to be nevertheless observable for the type of gravitational waves to which pulsar timing arrays are sensitive and for the favoured values of the cosmological parameters.
dc.description.funderGovernment of Chile
dc.description.funderFPI from MINECO (Spain)
dc.fechaingreso.objetodigital2024-04-26
dc.format.extent20 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1088/1361-6382/aaf675
dc.identifier.eissn1361-6382
dc.identifier.issn0264-9381
dc.identifier.urihttps://doi.org/10.1088/1361-6382/aaf675
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79606
dc.identifier.wosidWOS:000454545300002
dc.information.autorucFísica;Alfaro Solis Jorge Luis;S/I;49962
dc.issue.numero2
dc.language.isoen
dc.nota.accesocontenido parcial
dc.publisherIOP PUBLISHING LTD
dc.revistaCLASSICAL AND QUANTUM GRAVITY
dc.rightsacceso restringido
dc.subjectgravitational waves
dc.subjectcosmological constant
dc.subjectdark energy
dc.subjectdark matter
dc.subjectDARK ENERGY
dc.subjectACCELERATING UNIVERSE
dc.subjectCONSTRAINTS
dc.subjectMASS
dc.subjectSUPERNOVAE
dc.subjectLIMITS
dc.subjectLIGHT
dc.subjectIA
dc.titleOn the propagation of gravitational waves in a Lambda CDM universe
dc.typeartículo
dc.volumen36
sipa.codpersvinculados49962
sipa.indexWOS
sipa.indexScielo
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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