Abstract.
We present the detection of a filament of Ly\(\alpha\) emitting galaxies in front of the quasar Q1205-30 at z=3.04 based on deep narrow band imaging and follow-up spectroscopy obtained at the ESO NTT and VLT. We argue that Ly\(\alpha\) selection of high redshift galaxies with relatively modest amounts of observing time allows the detection and redshift measurement of galaxies with sufficiently high space densities that we can start to map out the large scale structure at z\(\approx2-3\) directly. Even more interesting is it that a 3D map of the filaments will provide a new cosmological test for the value of the cosmological constant, \(\Omega_\Lambda\).
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Fynbo, J.P.U., Møller, P., Thomsen, B. Detecting Filaments at z\(\approx 3\) . In: Gilfanov, M., Sunyeav, R., Churazov, E. (eds) Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology. ESO ASTROPHYSICS SYMPOSIA. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10856495_78
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DOI: https://doi.org/10.1007/10856495_78
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