Prime focus spectrograph: Subaru's future

Sugai, Hajime; Karoji, Hiroshi; Takato, Naruhisa; Tamura, Naoyuki; Shimono, Atsushi; Ohyama, Youichi; Ueda, Akitoshi; Ling, Hung-Hsu; Arruda, Marcio Vital de; Barkhouser, Robert H.; Bennett, C. L.; Bickerton, Steve; Braun, David; Bruno, R.; Carr, Michael; Oliveira, João Batista de Carvalho; Chang, Yin-Chang; Chen, Hsin-Yo; Dekany, Richard; Dominici, T. P.; Ellis, Richard S.; Fisher, Charles D.; Gunn, James E.; Heckman, Timothy M.; Ho, P. T. P.; Hu, Yen-Shan; Jaquet, M.; Karr, Jennifer; Kimura, Masahiko; Fèvre, O. Le; Mignant, D. Le; Loomis, Craig; Lupton, Robert H.; Madec, F.; Marrara, Lucas Souza; Martin, Laurent; Murayama, Hitoshi; Oliveira, Antônio César de; Oliveira, C. Mendes de; Oliveira, Lígia Souza de; Orndorff, Joe D.; Vilaça, Rodrigo de Paiva; Macanhan, Vanessa Bawden de Paula; Prieto, Éric; Santos, Jesulino Bispo dos; Seiffert, M. D.; Smee, Stephen A.; Smith, Roger M.; Sodré, L.; Spergel, David N.; Surace, C.; Vivès, S.; Wang, Shiang‐Yu; Yan, Chi-Hung

doi:10.1117/12.926954

Cited by 30 publications

(13 citation statements)

References 7 publications

(6 reference statements)

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“…By combining weak lensing measurements, on-going surveys such as Subaru/Primary Spectroscopic Survey (Sugai et al 2012(Sugai et al , 2014Tamura et al 2016) would certainly benefit us for investigating a three dimensional matter distribution in the local Universe to the Cold Spot. Figure 4.…”

Section: Discussionmentioning

confidence: 99%

Probing supervoids with weak lensing

Higuchi

Inoue

2018

Monthly Notices of the Royal Astronomical Society

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The cosmic microwave background (CMB) has non-Gaussian features in the temperature fluctuations. An anomalous cold spot surrounded with a hot ring, called the Cold Spot is one of such features. If a large underdence region (supervoid) resides towards the Cold Spot, we would be able to detect a systematic shape distortion in the images of background source galaxies via weak lensing effect. In order to estimate the detectability of such signals, we used the data of N-body simulations to simulate full-sky ray-tracing of source galaxies. We searched for a most prominent underdense region using the simulated convergence maps smoothed at a scale of 20 degree and obtained tangential shears around it. The lensing signal expected in a concordant ΛCDM model can be detected at a signal-to-noise ratio S/N ∼ 3. If a supervoid with a radius of ∼ 200 h −1 Mpc and a density contrast δ 0 ∼ −0.3 at the centre resides at a redshift z ∼ 0.2, on-going and near-future weak gravitational lensing surveys would detect a lensing signal with S/N 4 without resorting to stacking. From the tangential shear profile, we can obtain a constraint on the projected mass distribution of the supervoid.

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Section: Discussionmentioning

confidence: 99%

Probing supervoids with weak lensing

Higuchi

Inoue

2018

Monthly Notices of the Royal Astronomical Society

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“…In the spectroscopic realm, ongoing or recently completed surveys focusing on the measurement of BAO and galaxy clustering include the Sloan Digital Sky Survey (SDSS; Zehavi et al 2011), the WiggleZ survey (Drinkwater et al 2010) and the Baryon Oscillation Spectroscopic Survey (BOSS; Schlegel et al 2009) component of SDSS-III; planned next-generation missions include the Mid-Scale Dark Energy Spectroscopic Instrument (MS-DESI) and SuMIRe. Imaging surveys include SDSS, the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS), the Kilo Degree Survey (KiDS; de Jong et al 2013), the recently started Dark Energy Survey (DES), and in the future, Subaru Measurement of Images and Redshifts (SuMIRe; Sugai et al 2012), the Large Synoptic Survey Telescope (LSST; Abell et al 2009), and Euclid (Refregier et al 2010). The most recent constraints from weak lensing have been obtained by the CFHTLenS team (Kilbinger et al 2013), analysis of SDSS data (Huff et al 2011, Lin et al 2012, and the Deep Lens Survey (DLS; Jee et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum

Heitmann

Lawrence

Kwan

et al. 2013

ApJ

282

376

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Modern sky surveys are returning precision measurements of cosmological statistics such as weak lensing shear correlations, the distribution of galaxies, and cluster abundance. To fully exploit these observations, theorists must provide predictions that are at least as accurate as the measurements, as well as robust estimates of systematic errors that are inherent to the modeling process. In the nonlinear regime of structure formation, this challenge can only be overcome by developing a large-scale, multi-physics simulation capability covering a range of cosmological models and astrophysical processes. As a first step to achieving this goal, we have recently developed a prediction scheme for the matter power spectrum (a so-called emulator), accurate at the 1% level out to k ∼ 1 Mpc −1 and z = 1 for wCDM cosmologies based on a set of high-accuracy N-body simulations. It is highly desirable to increase the range in both redshift and wavenumber and to extend the reach in cosmological parameter space. To make progress in this direction, while minimizing computational cost, we present a strategy that maximally reuses the original simulations. We demonstrate improvement over the original spatial dynamic range by an order of magnitude, reaching k ∼ 10 h Mpc −1 , a four-fold increase in redshift coverage, to z = 4, and now include the Hubble parameter as a new independent variable. To further the range in k and z, a new set of nested simulations run at modest cost is added to the original set. The extension in h is performed by including perturbation theory results within a multi-scale procedure for building the emulator. This economical methodology still gives excellent error control, ∼5% near the edges of the domain of applicability of the emulator. A public domain code for the new emulator is released as part of the work presented in this paper.

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“…Our program will have important implications as a pathfinder for more ambitious lensed LAE surveys within BOSS, and for future spectroscopic projects such as DESI (Flaugher & Bebek 2014) and Subaru-PFS (Sugai et al 2012). Finally, based on the example of SLACS and other samples of significantly new astronomical systems, numerous unanticipated scientific applications will no doubt arise on the basis of this new lens sample.…”

Section: Discussionmentioning

confidence: 99%

THE BOSS EMISSION-LINE LENS SURVEY. III. STRONG LENSING OF Lyα EMITTERS BY INDIVIDUAL GALAXIES

Shu

Bolton

Kochanek

et al. 2016

ApJ

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We introduce the Baryon Oscillation Spectroscopic Survey (BOSS) Emission-Line Lens Survey GALaxy-Lyα EmitteR sYstems (BELLS GALLERY) Survey, which is a Hubble Space Telescope program to image a sample of galaxy-scale strong gravitational lens candidate systems with high-redshift Lyα emitters (LAEs) as the background sources. The goal of the BELLS GALLERY Survey is to illuminate dark substructures in galaxy-scale halos by exploiting the small-scale clumpiness of rest-frame far-UV emission in lensed LAEs, and to thereby constrain the slope and normalization of the substructure-mass function. In this paper, we describe in detail the spectroscopic strong-lens selection technique, which is based on methods adopted in the previous Sloan Lens ACS (SLACS) Survey, BELLS, and SLACS for the Masses Survey. We present the BELLS GALLERY sample of the 21 highestquality galaxy-LAE candidates selected from »1.4 10 6 galaxy spectra in the BOSS of the Sloan Digital Sky Survey III. These systems consist of massive galaxies at redshifts of approximately 0.5 strongly lensing LAEs at redshifts from 2-3. The compact nature of LAEs makes them an ideal probe of dark substructures, with a substructure-mass sensitivity that is unprecedented in other optical strong-lens samples. The magnification effect from lensing will also reveal the structure of LAEs below 100 pc scales, providing a detailed look at the sites of the most concentrated unobscured star formation in the universe. The source code used for candidate selection is available for download as a part of this release.

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Prime focus spectrograph: Subaru's future

Cited by 30 publications

References 7 publications

Probing supervoids with weak lensing

Probing supervoids with weak lensing

The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum

THE BOSS EMISSION-LINE LENS SURVEY. III. STRONG LENSING OF Lyα EMITTERS BY INDIVIDUAL GALAXIES

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