The Tracking Tapered Gridded Estimator for the 21-cm power spectrum from the Murchison Widefield Array (MWA) drift scan observations -- III. Improved upper limits at $z=8.2$ from multiple pointings

Shouvik Sarkar, Khandakar Md Asif Elahi, Samir Choudhuri +5

We analyze zenith-pointing $(\delta =-26.7^{\circ })$ Murchison Widefield Array (MWA) ${\nu }_c=154.2\mathrm{MHz}$ drift scan observations covering $349.0^{\circ }\le \alpha \le 70.0^{\circ }$ with 1…