Radio Continuum Sources behind the Large Magellanic Cloud
  We present a comprehensive multi-frequency catalogue of radio sources behind
the Large Magellanic Cloud between 0.2 and 20 GHz, gathered from a combination
of new and legacy radio continuum surveys. This catalogue covers an area of
$\sim$144~deg$^2$ at angular resolutions from 45 arcsec to $\sim$3 arcmin. We
find 6434 discrete radio sources in total, of which 3789 are detected at two or
more radio frequencies. We estimate the median spectral index ($\alpha$; where
$S_{v}\sim\nu^\alpha$) of $\alpha = -0.89 $ and mean of $-0.88 \pm 0.48$ for
3636 sources detected exclusively at two frequencies (0.843 and 1.384 GHz) with
similar resolution (FWHM $\sim$40-45 arcsec). The large frequency range of the
surveys makes it an effective tool to investigate Gigahertz Peak Spectrum
(GPS), Compact Steep Spectrum (CSS) and Infrared Faint Radio sources
populations within our sample. We find 10 GPS candidates with peak frequencies
near 5 GHz, from which we estimate their linear size. 1866 sources from our
catalogue are (CSS) candidates with $\alpha <-0.8$. We found six candidates for
High Frequency Peaker (HFP) sources, whose radio fluxes peak above 5 GHz and no
sources with unconstrained peaks and $\alpha~>0.5$. We found optical
counterparts for 343 of the radio continuum sources, of which 128have a
redshift measurement. Finally, we investigate the population of 123 Infrared
Faint Radio Sources (IFRSs) found in this study.
