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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8045
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dc.contributor.authorDash, Chandrachud B. V.-
dc.contributor.authorSarkar, Tapomoy Guha-
dc.contributor.authorSarkar, Anjan Kumar-
dc.date.accessioned2023-02-20T05:48:14Z-
dc.date.available2023-02-20T05:48:14Z-
dc.date.issued2023-01-20-
dc.identifier.citationJournal of Astrophysics and Astronomy, 2023, Vol.44, ArticleNo.5en_US
dc.identifier.issn0250-6335-
dc.identifier.issn0973-7758 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/8045-
dc.descriptionOpen Access from Indian Academy of Sciencesen_US
dc.description.abstractWe propose the intensity mapping of the redshifted Hi 21-cm signal from the post-reionization epoch as a cosmological probe of f(R) gravity. We consider the Hu–Sawicki family of f(R) gravity models characterized by a single parameter f,R0. The f(R) modification to gravity affects the post-reionization 21-cm power spectrum through the change in the growth rate of density fluctuations. We find that a radio interferometric observation with a SKA1-mid-like radio telescope in both auto-correlation and cross-correlation with galaxy weak-lensing and Lyman-α forest may distinguish f(R) models from ΛCDM cosmology at a precision, which is competitive with other probes of f(R) gravity.en_US
dc.language.isoenen_US
dc.publisherIndian Academy of Sciencesen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2023JApA...44....5D/abstracten_US
dc.relation.urihttps://arxiv.org/abs/2012.07373en_US
dc.relation.urihttps://doi.org/10.1007/s12036-022-09885-wen_US
dc.relation.urihttps://inspirehep.net/literature/1836418en_US
dc.rights2023 Indian Academy of Sciencesen_US
dc.titleIntensity mapping of post-reionization 21-cm signal and its cross-correlations as a probe of f(R) gravityen_US
dc.typeArticleen_US
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