dc.contributor.author |
Sarkar, Tapomoy Guha |
|
dc.date.accessioned |
2024-04-18T08:44:32Z |
|
dc.date.available |
2024-04-18T08:44:32Z |
|
dc.date.issued |
2023-01 |
|
dc.identifier.uri |
https://link.springer.com/article/10.1007/s12036-022-09885-w |
|
dc.identifier.uri |
http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/14581 |
|
dc.description.abstract |
We 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 . 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- forest may distinguish f(R) models from CDM cosmology at a precision, which is competitive with other probes of f(R) gravity. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer |
en_US |
dc.subject |
Physics |
en_US |
dc.subject |
General Theory of Relativity (GR) |
en_US |
dc.title |
Intensity mapping of post-reionization 21-cm signal and its cross-correlations as a probe of f(R) gravity |
en_US |
dc.type |
Article |
en_US |