Reconstructing the intergalactic UV background with QSO absorption lines

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Table 2

Input parameters and column densities of the test cases.

Case		[Si/H]	[Si/C]	H i	C iii	C iv	Si iii	Si iv

A^a	−3.5	−1.8	+0.7	15.30	12.659	12.967	11.133	11.512
B^b	−3.5	−1.8	+0.7	15.30	13.402	13.215	11.949	12.516

Notes.

^(a)

Absorber ionized by an original HM01 spectrum at z ~ 2;

^(b)

absorber ionized by a modified HM01 spectrum with Δ₁ = + 0.5, Δ₂ = −0.7, and Δ₃ = −0.5.

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