Measuring large-scale structure with quasars in narrow-band filter surveys

Authors

  • L. Raul Abramo,

    Corresponding author
    1. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA
    2. Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
    3. Dep. de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, CEP 05314-970 São Paulo, SP, Brazil
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  • Michael A. Strauss,

    1. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA
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  • Marcos Lima,

    1. Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
    2. Dep. de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, CEP 05314-970 São Paulo, SP, Brazil
    3. Departamento de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, CEP 05508-090 São Paulo, SP, Brazil
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  • Carlos Hernández-Monteagudo,

    1. Centro de Estudios de Física del Cosmos de Aragón (CEFCA), Plaza San Juan 1, planta 2, E-44001 Teruel, Spain
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  • Ruth Lazkoz,

    1. Fisika Teorikoa, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain
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  • Mariano Moles,

    1. Centro de Estudios de Física del Cosmos de Aragón (CEFCA), Plaza San Juan 1, planta 2, E-44001 Teruel, Spain
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  • Claudia Mendes de Oliveira,

    1. Departamento de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, CEP 05508-090 São Paulo, SP, Brazil
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  • Irene Sendra,

    1. Fisika Teorikoa, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain
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  • Laerte Sodré Jr,

    1. Departamento de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, CEP 05508-090 São Paulo, SP, Brazil
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  • Thaisa Storchi-Bergmann

    1. Instituto de Física, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, RS, Brazil
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E-mail: abramo@fma.if.usp.br

ABSTRACT

We show that a large-area imaging survey using narrow-band filters could detect quasars in sufficiently high number densities, and with more than sufficient accuracy in their photometric redshifts, to turn them into suitable tracers of large-scale structure. If a narrow-band optical survey can detect objects as faint as i= 23, it could reach volumetric number densities as high as 10−4 h3 Mpc−3 (comoving) at z∼ 1.5. Such a catalogue would lead to precision measurements of the power spectrum up to z∼ 3–4. We also show that it is possible to employ quasars to measure baryon acoustic oscillations at high redshifts, where the uncertainties from redshift distortions and non-linearities are much smaller than at z≲ 1. As a concrete example we study the future impact of the Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS), which is a narrow-band imaging survey in the optical over 1/5 of the unobscured sky with 42 filters of ∼100-Å full width at half-maximum. We show that J-PAS will be able to take advantage of the broad emission lines of quasars to deliver excellent photometric redshifts, σz≃ 0.002 (1 +z), for millions of objects.

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