dc.contributor.author |
Sarkar, Tapomoy Guha |
|
dc.date.accessioned |
2024-04-16T08:40:25Z |
|
dc.date.available |
2024-04-16T08:40:25Z |
|
dc.date.issued |
2011-01 |
|
dc.identifier.uri |
https://academic.oup.com/mnras/article/410/2/1130/1031595 |
|
dc.identifier.uri |
http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/14561 |
|
dc.description.abstract |
Separating the cosmological redshifted 21-cm signal from foregrounds is a major challenge. We present the cross-correlation of the redshifted 21-cm emission from neutral hydrogen (H i) in the post-reionization era with the Lyα forest as a new probe of the large-scale matter distribution in the redshift range z= 2–3 without the problem of foreground contamination. Though the 21-cm and the Lyα forest signals originate from different astrophysical systems, they are both expected to trace the underlying dark matter distribution on large scales. The multifrequency angular cross-correlation power spectrum estimator is found to be unaffected by the discrete quasar sampling, which only affects the noise in the estimate. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
OUP |
en_US |
dc.subject |
Physics |
en_US |
dc.subject |
Cosmology: Theory |
en_US |
dc.subject |
Diffuse Radiation |
en_US |
dc.subject |
Large-Scale Structure of Universe |
en_US |
dc.title |
Cross-correlation of the H i 21-cm signal and Lyα forest: a probe of cosmology |
en_US |
dc.type |
Article |
en_US |