Fast simulations for intensity mapping experiments

被引：56
作者：
Alonso, David [1 ]
Ferreira, Pedro G. [1 ]
Santos, Mario G. [2 ,3 ,4 ]
机构：
[1] Univ Oxford, Dept Phys, Subdept Astrophys, DWB, Oxford OX1 3RH, England
[2] Univ Western Cape, Dept Phys, ZA-7535 Cape Town, South Africa
[3] SKA SA, ZA-7405 Pinelands, South Africa
[4] Univ Lisbon, Inst Super Tecn, CENTRA, P-1049001 Lisbon, Portugal
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 444卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
large-scale structure of Universe; radio lines: galaxies; BARYON ACOUSTIC-OSCILLATIONS; SYNOPTIC SURVEY TELESCOPE; PROBE WMAP OBSERVATIONS; GALAXY REDSHIFT SURVEY; DARK ENERGY; H-I; FOREGROUND SUBTRACTION; SPECTROSCOPIC SURVEY; 21-CM EMISSION; HALO-MODEL;
D O I：
10.1093/mnras/stu1666
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a code to generate mock observations of 21 cm intensity mapping experiments. The emphasis of the code is on reducing the computational cost of running a full-blown simulation, trading computational time for accuracy. The code can be used to generate independent realizations of the cosmological signal and foregrounds, which are necessary, for instance, in order to obtain realistic forecasts for future intensity mapping experiments. The code is able to reproduce the correct angular and radial clustering pattern for the cosmological signal, including redshift-space distortions, lightcone evolution and bias. Furthermore, it is possible to simulate a variety of foregrounds, including the potentially problematic polarized synchrotron emission.
引用
收藏
页码：3183 / 3197
页数：15
相关论文
共 78 条
  • [31] HEALPix:: A framework for high-resolution discretization and fast analysis of data distributed on the sphere
    Górski, KM
    Hivon, E
    Banday, AJ
    Wandelt, BD
    Hansen, FK
    Reinecke, M
    Bartelmann, M
    [J]. ASTROPHYSICAL JOURNAL, 2005, 622 (02) : 759 - 771
  • [32] Haslam C. G. T., 1982, Astronomy & Astrophysics Supplement Series, V47, P1
  • [33] The outer scale of turbulence in the magnetoionized galactic interstellar medium
    Haverkorn, M.
    Brown, J. C.
    Gaensler, B. M.
    McClure-Griffiths, N. M.
    [J]. ASTROPHYSICAL JOURNAL, 2008, 680 (01) : 362 - 370
  • [34] NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS
    Hinshaw, G.
    Larson, D.
    Komatsu, E.
    Spergel, D. N.
    Bennett, C. L.
    Dunkley, J.
    Nolta, M. R.
    Halpern, M.
    Hill, R. S.
    Odegard, N.
    Page, L.
    Smith, K. M.
    Weiland, J. L.
    Gold, B.
    Jarosik, N.
    Kogut, A.
    Limon, M.
    Meyer, S. S.
    Tucker, G. S.
    Wollack, E.
    Wright, E. L.
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2013, 208 (02)
  • [35] Foreground simulations for the LOFAR-epoch of reionization experiment
    Jelic, V.
    Zaroubi, S.
    Labropoulos, P.
    Thomas, R. M.
    Bernardi, G.
    Brentjens, M. A.
    de Bruyn, A. G.
    Ciardi, B.
    Harker, G.
    Koopmans, L. V. E.
    Pandey, V. N.
    Schaye, J.
    Yatawatta, S.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 389 (03) : 1319 - 1335
  • [36] Realistic simulations of the Galactic polarized foreground: consequences for 21-cm reionization detection experiments
    Jelic, Vibor
    Zaroubi, Saleem
    Labropoulos, Panagiotis
    Bernardi, Gianni
    de Bruyn, A. G.
    Koopmans, Leon V. E.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 409 (04) : 1647 - 1659
  • [37] The 6dF Galaxy Survey: samples, observational techniques and the first data release
    Jones, DH
    Saunders, W
    Colless, M
    Read, MA
    Parker, QA
    Watson, FG
    Campbell, LA
    Burkey, D
    Mauch, T
    Moore, L
    Hartley, M
    Cass, P
    James, D
    Russell, K
    Fiegert, K
    Dawe, J
    Huchra, J
    Jarrett, T
    Lahav, O
    Lucey, J
    Mamon, GA
    Proust, D
    Sadler, EM
    Wakamatsu, K
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 355 (03) : 747 - 763
  • [38] Pan-STARRS - A large synoptic survey telescope array
    Kaiser, N
    Aussel, H
    Burke, B
    Boesgaard, H
    Chambers, K
    Chun, M
    Heasley, J
    Hodapp, K
    Hunt, B
    Jedicke, R
    Jewitt, D
    Kudritzki, R
    Luppino, G
    Maberry, M
    Magnier, E
    Monet, D
    Onaka, P
    Pickles, A
    Rhoads, PH
    Simon, T
    Szalay, A
    Szapudi, I
    Tholen, D
    Tonry, J
    Waterson, M
    Wick, A
    [J]. SURVEY AND OTHER TELESCOPE TECHNOLOGIES AND DISCOVERIES, 2002, 4836 : 154 - 164
  • [39] Kaiser N., 1987, MNRAS, V227, P1, DOI DOI 10.1093/MNRAS/227.1.1
  • [40] Recovering the non-linear density field from the galaxy distribution with a Poisson-lognormal filter
    Kitaura, Francisco-Shu
    Jasche, Jens
    Metcalf, R. Benton
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 403 (02) : 589 - 604
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