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The proximity effect on the Lyman alpha forest due to a a foreground QSO
A. Fernandez-Soto, X. Barcons, R. Carballo +1
The influence of a foreground QSO on the lyman a forest of another QSO with higher redshift has been investigated by analyzing the spectra of three such objects at redshifts $z=2 -…
The absorption spectra of Q1107+487 and Q1442+295
R. Carballo, X. Barcons, J. K. Webb
We present the first moderate resolution (approx. 40--120 km/s) spectroscopic observations of the bright (V<16.7) high-redshift QSOs Q1107+487 (z_{em} = 2.965) and Q1442+295 (z_{em…
The proximity Effect on the Lyman alpha Forest due to a Foreground QSO
A. Fernandez-Soto, X. Barcons, R. Carballo +1
We present the results of our study on three close pairs of QSOs. Our results are consistent with the existence of a proximity effect due to the foreground QSO, but due to its weak…