|The Australia Telescope National Facility Colloquium|
|Mon 24 Apr to Mon 24 Apr 2017|
Johannes Buchner colloquium: A high-energy view of the galaxy-scale metal gas at z=0.5-3
At the peak of star formation (z=0.5-3), an important yet hard-to-constrain measurable is the metal gas content of galaxies, a side-product of the evolution of massive stars, and the origin of rocky planets like the earth. At the same time, high-energy source (AGN, GRB) emission is absorbed by this gas along the observers line-of-sight. Therefore it could be interesting to indirectly do galaxy tomography with these column densities. We performed a survey of afterglow obscuration of all Swift-detected
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