Speaker
Description
We cross-correlate the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) second data release (DR2) catalogue with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) luminous red galaxies (LRGs) sample to extract the Baryon Acoustic Oscillation (BAO) signal and constrain the bias of radio sources in LoTSS DR2.
In the LoTSS catalogue, employing a flux limit of $1.5$mJy and a signal-to-noise ratio (SNR) of $7.5$, and considering a redshift interval of $\Delta z=0.06$ in the eBOSS LRG catalogue, we measure both the cross angular power spectrum $C_{\ell,x}$ and the eBOSS auto-power spectrum $C_{\ell,e}$. These measurements are performed across various eBOSS redshift slices. By marginalising over the broadband information of the $C_\ell$'s, we detect a mild BAO signal, and determine the bias of radio sources.
