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Fig. 4
Quasar groups and their orientations on the sky. Right ascensions and declinations are in degree. The superimposed lines illustrate the orientations of the four groups labeled 1, 2, 3, 4. The comoving distance scale at redshift z = 1.3 is indicated assuming a flat Universe with H0 = 70 km s-1 Mpc-1 and Ωm = 0.27.
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