Galaxy power spectrum and biasing results from the LOFAR Two-metre Sky
  Survey (first data release)
  The LOFAR Two-metre Sky Survey (LoTSS) is an ongoing survey aiming to observe
the entire Northern sky, providing an excellent opportunity to study the
distribution and evolution of the large-scale structure of the Universe. The
source catalogue from the public LoTSS first data release (DR1) covers 1% of
the sky, and shows correlated noise or fluctuations of the flux density
calibration on few degree scales. We explore the LoTSS DR1 to understand the
survey systematics and data quality of this first data release. We produce
catalog mocks to estimate uncertainties, and measure the angular clustering
statistics of LoTSS galaxies, which fit the $\Lambda$CDM cosmology reasonably
well. We employ a Markov chain Monte Carlo (MCMC) based Bayesian analysis to
recover the best galaxy biasing scheme and multi-component source fraction for
LoTSS DR1 above $1$ mJy assuming different possible redshift templates. After
masking some noisy and uneven patches and with suitable flux density cuts, the
LOFAR survey appears qualified for large-scale cosmological studies. The
upcoming data releases from LOFAR are expected to be deeper and wider, and will
therefore provide improved cosmological measurements.
