Guha Sarkar, Tapomoy ; Bharadwaj, Somnath ; Choudhury, Tirthankar Roy ; Datta, Kanan K. (2010) Cross-correlation of the H i 21-cm signal and Lyα forest: a probe of cosmology Monthly Notices of the Royal Astronomical Society, 410 (2). pp. 1130-1134. ISSN 0035-8711
Full text not available from this repository.
Official URL: http://doi.org/10.1111/j.1365-2966.2010.17509.x
Related URL: http://dx.doi.org/10.1111/j.1365-2966.2010.17509.x
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The Royal Astronomical Society. |
| Keywords: | Cosmology: Theory, Diffuse Radiation; Large-Scale Structure Of Universe. |
| ID Code: | 116355 |
| Deposited On: | 09 Apr 2021 04:50 |
| Last Modified: | 09 Apr 2021 04:50 |
Repository Staff Only: item control page
