Speaker
Description
LoTSS (LOFAR Two-meter Sky Survey) is one of the major surveys conducted by the LOFAR(Low Frequency Array) network. It is a large-scale project aimed at creating deep, high-resolution radio maps of the northern sky at low frequencies. We present the work of the cosmology group in the LOFAR Surveys Key Science Projects: the count-in-cell statistics of the LoTSS sources(Pashapourahmadabad et al.); the redshift distribution from LoTSS deep fields(Bhardwaj el al.); the radio dipole from LoTSS DR2(Böhme et al); the auto-correlation and angular power spectrum of LoTSS (Hale et al.); the cross-correlation with CMB lensing and the Integrated Sache-Wolfe effect (Nakoneczny et al.); the cross-correlation with the optical spectroscopic survey eBOSS (Zheng et al.); and the joint cosmological parameter estimation with LoTSS combining auto and cross-correlation with CMB and eBOSS and other surveys (Heneka et al.). We provide competitive constraints on the bias and redshift distribution of radio sources, BAO constraints and cosmological parameter constraints.
