The correlation of the Lyman-α forest and metals in close pairs of high-redshift quasars

Details The correlation of the Lyman-α forest and metals in close pairs of high-redshift quasars The correlation of the Lyman-α forest and metals in close pairs of high-redshift quasars

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sf2a.conf..671c&link_type=abstract

SF2A-2005: Semaine de l'Astrophysique Francaise, meeting held in Strasbourg, France, June 27 - July 1, 2005, Edited by F. Casoli

Astronomy and Astrophysics

Astrophysics

Scientific paper

We derive the transverse flux correlation function in the Lyman-α forest at z ˜ 2.1 from VLT-FORS observations of a total of 32 pairs of quasars. The shape and correlation length of the transverse correlation function are in good agreement with those expected from absorption by the filamentary and sheet-like structures in the photoionized warm intergalactic medium predicted in CDM-like models for structures formation. Using a sample of 139 CIV systems detected along the lines of sight toward the pairs of quasars we investigate the transverse correlation of metals on the same scales. We find that the correlation function is consistent with that of a randomly distributed population of CIV systems. However, we detect an important overdensity of systems in front of a quartet.

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