Towards 21-cm Intensity Mapping at z = 2.28 with uGMRT using the Tapered Gridded Estimator I: Foreground Avoidance
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DOI: 10.1093/mnras/stac2419
Abstract: The post-reionization (z ≤ 6) neutral hydrogen (H i ) 21-cm intensity mapping signal holds the potential to probe the large scale structures, study the expansion history and constrain various cosmological parameters. Here we apply the Tapered… read more here.
Keywords: omega small; foreground avoidance; tapered gridded; gridded estimator ... See more keywords
A Tapered Gridded Estimator (TGE) for the multifrequency angular power spectrum (MAPS) and the cosmological H i21-cm power spectrum
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DOI: 10.1093/mnras/sty3501
Abstract: In this work we present a new approach to estimate the power spectrum $P({\bf k})$ of redshifted HI 21-cm brightness temperature fluctuations. The MAPS $C_{\ell}(\nu_a,\nu_b)$ completely quantifies the second order statistics of the sky signal… read more here.
Keywords: tapered gridded; gridded estimator; power spectrum; power ... See more keywords