Recent submissions 

Curtin Research Publications: Recent submissions

Now showing items 2221-2230 of 70736

    • Estimation of relative risk for events on a linear network
      McSwiggan, G.; Baddeley, Adrian ; Nair, G. (2020)
      Motivated by the study of traffic accidents on a road network, we discuss the estimation of the relative risk, the ratio of rates of occurrence of different types of events occurring on a network of lines. Methods developed ...
    • Computation of Lacunarity from Covariance of Spatial Binary Maps
      Hingee, K.; Baddeley, Adrian ; Caccetta, P.; Nair, G. (2019)
      We consider a spatial binary coverage map (binary pixel image) which might represent the spatial pattern of the presence and absence of vegetation in a landscape. ‘Lacunarity’ is a generic term for the nature of gaps in ...
    • Gridded and direct Epoch of Reionisation bispectrum estimates using the Murchison Widefield Array
      Trott, Cathryn ; Watkinson, C.A.; Jordan, Chris ; Yoshiura, S.; Majumdar, S.; Barry, Nichole ; Byrne, R.; Hazelton, B.J.; Hasegawa, K.; Joseph, R.; Kaneuji, T.; Kubota, K.; Li, W.; Line, Jack ; Lynch, Christene ; McKinley, Ben ; Mitchell, D.A.; Morales, M.F.; Murray, Steven ; Pindor, B.; Pober, J.C.; Rahimi, M.; Riding, J.; Takahashi, K.; Tingay, Steven ; Wayth, Randall ; Webster, R.L.; Wilensky, M.; Wyithe, J.S.B.; Zheng, Q.; Emrich, David ; Beardsley, A.P.; Booler, Tom ; Crosse, B.; Franzen, Thomas ; Horsley, L.; Johnston-Hollitt, Melanie ; Kaplan, D.L.; Kenney, David ; Pallot, D.; Sleap, G.; Steele, K.; Walker, Mia ; Williams, Andrew ; Wu, C. (2019)
      We apply two methods to estimate the 21-cm bispectrum from data taken within the Epoch of Reionisation (EoR) project of the Murchison Widefield Array (MWA). Using data acquired with the Phase II compact array allows a ...
    • Investigating the contribution of extended radio sources to the Epoch of Reionization power spectrum
      Cook, J.H.; Trott, Cathryn ; Line, Jack (2022)
      We investigate the contribution of extended radio sources such as Centaurus A, and Galactic supernova remnants (SNRs) to our ability to detect the statistical 21-cm signal from the Epoch of Reionisation (EoR) with the ...
    • System design and calibration of SITARA - A global 21 cm short spacing interferometer prototype
      Thekkeppattu, Jishnu ; McKinley, Ben ; Trott, Cathryn ; Jones, Jake ; Ung, Daniel (2022)
      Global 21-cm experiments require exquisitely precise calibration of the measurement systems in order to separate the weak 21-cm signal from Galactic and extragalactic foregrounds as well as instrumental systematics. ...
    • Impact of station far sidelobes on EoR/CD power spectra
      Trott, Cathryn (2022)
      Stations of dipole antennas for SKA1-Low will comprise 256 elements spread over an area with a diameter of 38 m. We consider the effect of residual unsubtracted sources well outside of the main beam for differing numbers ...
    • Constraining the 21 cm brightness temperature of the IGM at z = 6.6 around LAEs with the murchison widefield array
      Trott, Cathryn ; Jordan, Chris ; Line, J.L.B.; Lynch, Christene ; Yoshiura, S.; McKinley, Ben ; Dayal, P.; Pindor, B.; Hutter, A.; Takahashi, K.; Wayth, Randall ; Barry, Nichole ; Beardsley, A.; Bowman, J.; Byrne, R.; Chokshi, A.; Greig, B.; Hasegawa, K.; Hazelton, B.J.; Howard, E.; Jacobs, D.; Kolopanis, M.; Mitchell, D.A.; Morales, M.F.; Murray, Steven ; Pober, J.C.; Rahimi, M.; Tingay, Steven ; Webster, R.L.; Wilensky, M.; Wyithe, J.S.B.; Zheng, Q. (2021)
      The locations of Ly α-emitting galaxies (LAEs) at the end of the Epoch of Reionization (EoR) are expected to correlate with regions of ionized hydrogen, traced by the redshifted 21 cm hyperfine line. Mapping the neutral ...
    • A new MWA limit on the 21 cm power spectrum at redshifts ∼13-17
      Yoshiura, S.; Pindor, B.; Line, J.L.B.; Barry, Nichole ; Trott, Cathryn ; Beardsley, A.; Bowman, J.; Byrne, R.; Chokshi, A.; Hazelton, B.J.; Hasegawa, K.; Howard, E.; Greig, B.; Jacobs, D.; Jordan, Chris ; Joseph, R.; Kolopanis, M.; Lynch, Christene ; McKinley, Ben ; Mitchell, D.A.; Morales, M.F.; Murray, Steven ; Pober, J.C.; Rahimi, M.; Takahashi, K.; Tingay, Steven ; Wayth, Randall ; Webster, R.L.; Wilensky, M.; Wyithe, J.S.B.; Zhang, Z.; Zheng, Q. (2021)
      Observations in the lowest Murchison Widefield Array (MWA) band between 75 and 100 MHz have the potential to constrain the distribution of neutral hydrogen in the intergalactic medium at redshift ∼13-17. Using 15 h of MWA ...
    • Simulations of ionospheric refraction on radio interferometric data
      Chege, J Kariuki; Jordan, Chris ; Lynch, Christene ; Line, Jack ; Trott, Cathryn (2021)
      The Epoch of Reionisation (EoR) is the period within which the neutral universe transitioned to an ionised one. This period remains unobserved using low-frequency radio interferometers which target the 21 cm signal of ...
    • The impact of tandem redundant/sky-based calibration in MWA Phase II data analysis
      Zhang, Z.; Pober, J.C.; Li, W.; Hazelton, B.J.; Morales, M.F.; Trott, Cathryn ; Jordan, Chris ; Joseph, R.C.; Beardsley, A.; Barry, N.; Byrne, R.; Tingay, Steven ; Chokshi, A.; Hasegawa, K.; Jacobs, D.C.; Lanman, A.; Line, Jack ; Lynch, Christene ; McKinley, Ben ; Mitchell, D.A.; Murray, Steven ; Pindor, B.; Rahimi, M.; Takahashi, K.; Wayth, Randall ; Webster, R.L.; Wilensky, M.; Yoshiura, S.; Zheng, Q. (2020)
      Precise instrumental calibration is of crucial importance to 21-cm cosmology experiments. The Murchison Widefield Array's (MWA) Phase II compact configuration offers us opportunities for both redundant calibration and ...