Radiation Induced Void in the Spectrum of TOL 1038-2712
R. Srianand
Abstract
Detection of a large void ( 7 Mpc) is reported between the redshifts 2.16286 and 2.20748 in the Ly~α forest of TOL 1038-2712. This void is centered near a foreground QSO TOL 1037-2704 which is at a distance 4.4 Mpc away from the void. The estimated probability for the void to occure by chance in front of the foreground QSO is few times 10-3. Various implications of the void being produced by excess ionization due to foreground QSO are discussed.
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