Scattering effects simulation and data (Rogers et al. 2022)
The data and simulations below were used in the analysis and plots presented in Rogers et al. 2022 (in review). Please cite Rogers et al. (2022) in any publication or other work that makes use of this data.
Figure 2 of Rogers et al. (2022)
Data for Figure 2 of Rogers et al. (2022)
This file contains the integrated sky spectrum as seen by the antenna as a function of frequency for eight separate 10 minute periods, binned by Galactic Hour Angle (GHA). Each binned spectrum is preceded by a GHA label of the form “GHA= 03:00” followed by 128 rows of several (labeled) columns. The column values consist of:
scattering_figure2_data.txt 8 blocks, each with 1 header row and 128 data rows. 8 columns in data rows. 69 kB ---------------------------------- +++ block header row: column 1: Galactic Hour Angle (GHA) - hh:mm +++ block data rows (next 128 rows): column 1: the label text "freq" column 2: (freq) - Frequency [MHz] column 3: the label text "tantenna" column 4: (tantenna) - Antenna temperature [K] column 5: the label text "skymodel" column 6: (skymodel) - Sky model (Unused, always zero) column 7: the label text "wt" column 8: (wt) - Weight (0 or 1) indicates inclusion in 5-term fit
Download: Scattering effects data – Rogers et al., Figure 2 (scattering_figure2_data.txt, 69 kB)
Simulations for Figure 2 of Rogers et al. (2022)
This file contains the simulated antenna temperature as a function of frequency for eight 10 minute periods, binned by Galactic Hour Angle (GHA). The simulated antenna temperature are generated from a convolution of the antenna beam model with the Haslam sky map for two situations (with and without the effects of the Hut) Each GHA binned spectrum is preceded by a GHA label of the form “GHA 03:00” followed by 1024 rows of several (labeled) columns. The column values consist of:
scattering_figure2_hut_simulation.txt 8 blocks, each with 1 header row and 1024 data rows. 8 columns in data rows. 577 kB ---------------------------------- +++ block header row: column 1: Galactic Hour Angle (GHA) - hh:mm +++ block data rows (next 1024 rows): column 1: the label text "freq" column 2: (freq) - Frequency [MHz] column 3: the label text "tantenna" column 4: (tantenna) - Simulated Antenna temperature [K] using simulated antenna beam (including effects of hut) convolved with Haslam map column 5: the label text "skymodel" column 6: (skymodel) - Simulated Antenna temperature [K] using simulated antenna beam (NOT including effects of hut) convolved with Haslam map column 7: the label text "wt" column 8: (wt) - Weight (0 or 1) indicates inclusion in 5-term fit
Download: Scattering effects hut simulation – Rogers et al., Figure 2 (scattering_figure2_hut_simulation.txt, 577 kB)
Low-band data release 1 (Bowman et al. 2018)
The data below were used in the analysis and plots presented in Bowman, Rogers, Monsalve, Mozdzen & Mahesh, An absorption profile centred at 78 megahertz in the sky-averaged spectrum, Nature, volume 555, pages 67–70 (2018), doi:10.1038/nature25792. Please cite Bowman et al. (2018) in any publication or other work that makes use of this data.
Data for Figure 1 of Bowman et al. (2018)
Figure 1 of Bowman et al. (2018)
Download: Data for Figure 1 of Bowman et al. (2018) (figure1_plotdata.csv, 8 kB)
The data used for Figure 1 are from low-1 (configuration H2) and span 2016 day 252 through 2017 day 94, processed as described in the Methods section of the paper. The data are presented in tabular form in a CSV comma delimited file. Each row is a different frequency between 50 and 100 MHz with spectral resolution 0.390625 MHz, yielding 128 rows of data. The file begins with header row that labels the columns. There are seven columns providing the data used for the different curves plotted in Figure 1 panels (a) through (e).
figure1_plotdata.csv 129 rows (1 header row), 7 columns 8 kB ---------------------------------- column 1: Frequency [MHz] column 2: Weight - 0 or 1 specifying the validity of the data at that frequency column 3: Tsky [K] - integrated sky spectrum used for the model fitting, plotted in panel (a) column 4: Tres1 [K] - residuals to the best-fit foreground-only (5-term physical model), plotted in panel (b) column 5: Tres2 [K] - residuals to the best-fit combined foreground and 21cm model, plotted in panel (c) column 6: Tmodel [K] - best-fit 21cm model, plotted in panel (d) column 7: T21 [K] - Combined Tmodel + Tres2, plotted in panel (e)
Data for Figure 2 of Bowman et al. (2018)
Figure 2 of Bowman et al. (2018)
Download: Data for Figure 2 of Bowman et al. (2018) (figure2_plotdata.csv, 21 kB)
The data used for Figure 2 are from low-1 and low-2 instruments with several hardware and processing configurations and span 2016-2017, processed as described in the Methods section of the paper. The data are presented in tabular form in a CSV comma delimited file. Each row is a different frequency between 50 and 100 MHz with spectral resolution 0.390625 MHz, yielding 128 rows of data. The file begins with header row that labels the columns. There are 17 columns providing the data used for the different curves plotted in the figure. The curves for hardware cases H1-H5 were created with processing case P6 using only data between frequencies 60-99 MHz. Hardware case H6 was processed using data between 57-99 MHz. Case P8 uses the H2 data but processed with a larger frequency range between 51-99 MHz.
figure2_plotdata.csv 129 rows (1 header row), 17 columns 21 kB ---------------------------------- column 1: Frequency [MHz] column 2: Redshift (z) column 3: Age of universe [Myr] calculated using Planck 2016 cosmology column 4: Hardware case H1 - Weight (0 or 1 specifying the validity of the data at that frequency) column 5: Hardware case H1 - T21 [K] (best-fit 21cm model plus residuals to model) column 6: Hardware case H2 - Weight column 7: Hardware case H2 - T21 [K] column 8: Hardware case H3 - Weight column 9: Hardware case H3 - T21 [K] column 10: Hardware case H4 - Weight column 11: Hardware case H4 - T21 [K] column 12: Hardware case H5 - Weight column 13: Hardware case H5 - T21 [K] column 14: Hardware case H6 - Weight column 15: Hardware case H6 - T21 [K] column 16: Hardware case H2 with processing case P8 - Weight column 17: Hardware case H2 with processing case P8 - T21 [K]