• Medientyp: E-Artikel
  • Titel: LSST and the Epoch of Reionization Experiments
  • Beteiligte: Ivezić, Željko
  • Erschienen: Cambridge University Press (CUP), 2017
  • Erschienen in: Proceedings of the International Astronomical Union
  • Sprache: Englisch
  • DOI: 10.1017/s1743921317011206
  • ISSN: 1743-9213; 1743-9221
  • Schlagwörter: Astronomy and Astrophysics ; Space and Planetary Science
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  • Beschreibung: <jats:title>Abstract</jats:title><jats:p>The Large Synoptic Survey Telescope (LSST), a next generation astronomical survey, sited on Cerro Pachon in Chile, will provide an unprecedented amount of imaging data for studies of the faint optical sky. The LSST system includes an 8.4m (6.7m effective) primary mirror and a 3.2 Gigapixel camera with a 9.6 sq. deg. field of view. This system will enable about 10,000 sq. deg. of sky to be covered twice per night, every three to four nights on average, with typical 5-sigma depth for point sources of<jats:italic>r</jats:italic>= 24.5 (AB). With over 800 observations in the<jats:italic>ugrizy</jats:italic>bands over a 10-year period, these data will enable coadded images reaching<jats:italic>r</jats:italic>= 27.5 (about 5 magnitudes deeper than SDSS) as well as studies of faint time-domain astronomy. The measured properties of newly discovered and known astrometric and photometric transients will be publicly reported within 60 sec after closing the shutter. The resulting hundreds of petabytes of imaging data for about 40 billion objects will be used for scientific investigations ranging from the properties of near-Earth asteroids to characterizations of dark matter and dark energy. For example, simulations estimate that LSST will discover about 1,000 quasars at redshifts exceeding 7; this sample will place tight constraints on the cosmic environment at the end of the reionization epoch. In addition to a brief introduction to LSST, I review the value of LSST data in support of epoch of reionization experiments and discuss how international participants can join LSST.</jats:p>