DESI: the next-generation galaxy mapping project


Lang, D. (2017). DESI: the next-generation galaxy mapping project. Perimeter Institute. https://pirsa.org/17030091


Lang, Dustin. DESI: the next-generation galaxy mapping project. Perimeter Institute, Mar. 21, 2017, https://pirsa.org/17030091


          @misc{ pirsa_17030091,
            doi = {10.48660/17030091},
            url = {https://pirsa.org/17030091},
            author = {Lang, Dustin},
            keywords = {Cosmology},
            language = {en},
            title = {DESI: the next-generation galaxy mapping project},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {mar},
            note = {PIRSA:17030091 see, \url{https://pirsa.org}}

Dustin Lang Perimeter Institute for Theoretical Physics


I will describe the Dark Energy Spectroscopic Instrument (DESI), an instrument currently being built to carry out a large galaxy redshift survey.  DESI is the next step beyond the SDSS and BOSS surveys, mapping over 30 million galaxies.  I will focus in particular on the amazing engineering challenges of the DESI instrument itself, which includes a 5,000-robot army and 250 kilometers of fiber optics.  I will conclude by briefly describing the work I am personally involved in: a large imaging survey that will measure the galaxies from which DESI will select targets for follow-up spectroscopic observation.