CHILES VERDES: COSMOS radio variability

Here we present an analysis of radio variable sources from the CHILES Variable and Explosive Radio Dynamic Evolution Survey (CHILES VERDES)-a partner project of the 1.4GHz COSMOS HI Large Extragalactic Survey.

CHILES VERDES provides an unprecedented combination of survey depth, duration, and cadence, with 960hr of 1-2GHz continuum VLA data obtained over 209 epochs between 2013 and 2019 in a 0.44deg^2^ section of the well-studied extragalactic deep field, COSMOS. We identified 18 moderate-variability sources (showing 10%-30% flux density variation) and 40 lower-variability sources (2%-10% flux density variation). They are mainly active galactic nuclei (AGNs) with radio luminosities in the range of 10^22^-10^27^W/Hz, based on cross-matching with COSMOS multiwavelength catalogs.