Corpus ID: 231986445

The HI intensity mapping bispectrum including observational effects

  title={The HI intensity mapping bispectrum including observational effects},
  author={Steven Cunnington and C. Watkinson and A. Pourtsidou},
The bispectrum is a 3-point statistic with the potential to provide additional information beyond power spectra analyses of survey datasets. Radio telescopes which broadly survey the 21cm emission from neutral hydrogen (Hi) are a promising way to probe LSS and in this work we present an investigation into the Hi intensity mapping (IM) bispectrum using simulations. We present a model of the redshift space Hi IM bispectrum including observational effects from the radio telescope beam and 21cm… Expand


Large-scale structure in the Universe
  • 3,163
Tools Of Radio Astronomy
  • 81
In this work we did not aim to investigate this in detail, since a robust covariance estimation for the bispectrum
  • 2017
2020a, 21 cm intensity mapping
  • 2020
21 cm intensity mapping: a 900 -1300 MHz full-sky simulation
  • 2020
The synchrotron emission is based on Planck Legacy Archive6 FFP10 simulations of synchrotron emission
  • 2020
2017, in Proceedings,MeerKATScience: On the Pathway to the SKA (MeerKAT2016): Stellenbosch
  • South Africa,
  • 2016
Essential Radio Astronomy
  • 30
and makes the assumption that point sources over 10mJy will be identifiable and thus can be removed. Lastly, we simulated polarisation leakage with the use of the CRIME7 software
  • (Alonso et al
  • 2013
Rmol/(Rmol + 1) (Blitz
  • Rosolowsky
  • 2006