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Fig. 21.


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Dipole in TA sky. Top-left: scatter plot of the dipole amplitude reconstructed for 300 datasets computed for an astrophysical scenario based on the baseline volume-limited catalog, source model A, a 1 nG EGMF and the JF12+Planck GMF with λc = 500 pc in the energy bins 4 ≤ E < 8 EeV and E ≥ 8 EeV assuming the TA sky-coverage. Two different statistics are considered: 6000 events above 9 EeV and 32187 events above 8 EeV. The 1σ confidence intervals estimated by Auger are shown by the shaded area. Top-right: scatter plot of the corresponding p-values. Bottom-left: skymap in galactic coordinates showing the reconstructed directions of the dipoles reconstructed for each of the 300 datasets assuming Auger (red) and TA (blue) sky coverage. The statistics of the datasets is for both cases 32187 events above 8 EeV. The portion of the sky out of TA field of view lies below the thick black line. Bottom-right: UHECR energy spectrum obtained after propagation in the extragalactic and Galactic media The lines show the mean expected fluxes averaged over 300 realizations of the TA dataset (6000 events above 9 EeV) and the shaded areas cover the range in which 90% of the realizations are found. The different colors show different groups of nuclear species. The obtained average spectrum is compared to the one measured by TA (Ivanov 2020) after rescaling its energy scale down by 10%.

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