create_low_test_skycomponents_from_gleam

create_low_test_skycomponents_from_gleam(flux_limit=0.1, polarisation_frame=<ska_sdp_datamodels.science_data_model.polarisation_model.PolarisationFrame object>, frequency=array([1.e+08]), kind='cubic', phasecentre=None, radius=1.0) → List[SkyComponent][source]

Create sky components from the GLEAM survey

Stokes I is estimated from a cubic spline fit to the measured fluxes. The polarised flux is always zero.

See http://www.mwatelescope.org/science/gleam-survey The catalog is available from Vizier.

VIII/100 GaLactic and Extragalactic All-sky MWA survey (Hurley-Walker+, 2016)

GaLactic and Extragalactic All-sky Murchison Wide Field Array (GLEAM) survey. I: A low-frequency extragalactic catalogue. Hurley-Walker N., et al., Mon. Not. R. Astron. Soc., 464, 1146-1167 (2017), 2017MNRAS.464.1146H

Parameters:

  • flux_limit – Only write components brighter than this (Jy)

  • polarisation_frame – Polarisation frame (default PolarisationFrame(“stokesI”))

  • frequency – Frequencies at which the flux will be estimated

  • kind – Kind of interpolation (see scipy.interpolate.interp1d) Default: linear

  • phasecentre – Desired phase centre (SkyCoord) default None implies all sources

  • radius – Radius of sources selected around phasecentre (default 1.0 rad)

Returns:

List of SkyComponents