研究者詳細 - 宮武　広直

論文 - 宮武　広直

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Hyper Suprime-Cam Year 3 results: Cosmology from galaxy clustering and weak lensing with HSC and SDSS using the emulator based halo model 査読有り国際共著

Miyatake, H; Sugiyama, S; Takada, M; Nishimichi, T; Li, XC; Shirasaki, M; More, S; Kobayashi, Y; Nishizawa, AJ; Rau, MM; Zhang, TQ; Takahashi, R; Dalal, R; Mandelbaum, R; Strauss, MA; Hamana, T; Oguri, M; Osato, K; Luo, WT; Kannawadi, A; Hsieh, BC; Armstrong, R; Bosch, J; Komiyama, Y; Lupton, RH; Lust, NB; Macarthur, LA; Miyazaki, S; Murayama, H; Okura, Y; Price, PA; Sunayama, T; Tait, PJ; Tanaka, M; Wang, SY

PHYSICAL REVIEW D 108 巻 ( 12 ) 2023年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review D

We present cosmology results from a blinded joint analysis of cosmic shear, ζ±, galaxy-galaxy weak lensing, Δς(R), and projected galaxy clustering, wp(R), measured from the Hyper Suprime-Cam three-year (HSC-Y3) shape catalog and the Sloan Digital Sky Survey (SDSS) DR11 spectroscopic galaxy catalog - a 3×2 pt cosmology analysis. We define luminosity-cut, and therefore nearly volume-limited, samples of SDSS galaxies to serve as the tracers of wp and as the lens samples for Δς in three spectroscopic redshift bins spanning the range 0.15<z<0.7. For the ζ± and Δς measurements, we use a single sample of about seven million source galaxies over 416 deg2, selected from HSC-Y3 based on having photometric redshifts (photo-z) greater than 0.75. The deep, high-quality HSC-Y3 data enable significant detections of the Δς signals, with integrated signal-to-noise ratio S/N∼24 in the range 3≤R/[h-1 Mpc]≤30 over the three lens samples. ζ± has S/N∼19 in the range 8′≤ ≤50′ and 30′≤ ≤150′ for ζ+ and ζ-, respectively. For cosmological parameter inference, we use the dark emulator package, combined with a halo occupation distribution prescription for the relation between galaxies and halos, to model wp and Δς down to quasinonlinear scales, and we estimate cosmological parameters after marginalizing over nuisance parameters. In our baseline analysis we employ an uninformative flat prior of the residual photo-z error, given by Π(Δzph)=U(-1,1), to model a residual bias in the mean redshift of HSC source galaxies. Comparing the relative lensing amplitudes for Δς in the three redshift bins and for ζ± with the single HSC source galaxy sample allows us to calibrate the photo-z parameter Δzph to the precision of σ(Δzph)≃0.09. With these methods, we obtain a robust constraint on the cosmological parameters for the flat ΛCDM model: S8=σ8(ωm/0.3)0.5=0.763-0.036+0.040, or the best-constrained parameter given by S8′=σ8(ωm/0.3)0.22=0.721±0.028, determined with about 4% fractional precision. Based on multidimensional tension metrics, HSC-Y3 data exhibits about 2.5σ tension with the cosmological constraint inferred by Planck for the ΛCDM model, and hints at a nonzero residual photo-z bias implying that the true mean redshift of the HSC galaxies at z≳0.75 is higher than that implied by the original photo-z estimates.

DOI： 10.1103/PhysRevD.108.123517

Web of Science

Scopus

Cosmological inference from an emulator based halo model. II. Joint analysis of galaxy-galaxy weak lensing and galaxy clustering from HSC-Y1 and SDSS 査読有り国際共著

Miyatake, H; Sugiyama, S; Takada, M; Nishimichi, T; Shirasaki, M; Kobayashi, Y; Mandelbaum, R; More, S; Oguri, M; Osato, K; Park, Y; Takahashi, R; Coupon, J; Hikage, C; Hsieh, BC; Komiyama, Y; Leauthaud, A; Li, XC; Luo, WT; Lupton, RH; Miyazaki, S; Murayama, H; Nishizawa, AJ; Price, PA; Simet, M; Speagle, JS; Strauss, MA; Tanaka, M; Yoshida, N

PHYSICAL REVIEW D 106 巻 ( 8 ) 2022年10月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review D

We present high-fidelity cosmology results from a blinded joint analysis of galaxy-galaxy weak lensing (Δς) and projected galaxy clustering (wp) measured from the Hyper Suprime-Cam Year-1 (HSC-Y1) data and spectroscopic Sloan Digital Sky Survey (SDSS) galaxy catalogs in the redshift range 0.15<z<0.7. We define luminosity-limited samples of SDSS galaxies to serve as the tracers of wp in three spectroscopic redshift bins, and as the lens samples for Δς. For the Δς measurements, we select a single sample of 4×106 source galaxies over 140 deg2 from HSC-Y1 with photometric redshifts (photo z) greater than 0.75, enabling a better handle of photo-z errors by comparing the Δς amplitudes for the three lens redshift bins. The deep, high-quality HSC-Y1 data enable significant detections of the Δς signals, with integrated signal-to-noise ratio S/N∼15 in the range 3≤R/[h-1 Mpc]≤30 for the three lens samples, despite the small area coverage. For cosmological parameter inference, we use an input galaxy-halo connection model built on the dark emulator package (which uses an ensemble set of high-resolution N-body simulations and enables fast, accurate computation of the clustering observables) with a halo occupation distribution that includes nuisance parameters to marginalize over modeling uncertainties. We model the Δς and wp measurements on scales from R≃3 and 2 h-1 Mpc, respectively, up to 30 h-1 Mpc (therefore excluding the baryon acoustic oscillations information) assuming a flat ΛCDM cosmology, marginalizing over about 20 nuisance parameters and demonstrating the robustness of our results to them. With various tests using mock catalogs described in Miyatake et al. [preceding paper, Phys. Rev. D 106, 083519 (2022)10.1103/PhysRevD.106.083519], we show that any bias in the clustering amplitude S8σ8(ωm/0.3)0.5 due to uncertainties in the galaxy-halo connection is less than ∼50% of the statistical uncertainty of S8, unless the assembly biaseffect is unexpectedly large. Our best-fit models have S8=0.795-0.042+0.049 (mode and 68% credible interval) for the flat ΛCDM model; we find tighter constraints on the quantity S8(α=0.17)σ8(ωm/0.3)0.17=0.745-0.031+0.039.

DOI： 10.1103/PhysRevD.106.083520

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Scopus

First Identification of a CMB Lensing Signal Produced by 1.5 Million Galaxies at z ∼ 4: Constraints on Matter Density Fluctuations at High Redshift 査読有り国際共著

Miyatake, H; Harikane, Y; Ouchi, M; Ono, Y; Yamamoto, N; Nishizawa, AJ; Bahcall, N; Miyazaki, S; Malagón, AAP

PHYSICAL REVIEW LETTERS 129 巻 ( 6 ) 頁： 061301 2022年8月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review Letters

We report the first detection of the dark matter distribution around Lyman break galaxies (LBGs) at high redshift through the cosmic microwave background (CMB) lensing measurements with the public Planck PR3 κ map. The LBG sample consists of 1 473 106 objects with the median redshift of z∼4 that are identified in a total area of 305 deg2 observed by the Hyper Suprime-Cam Strategic Survey Program survey. After careful investigations of systematic uncertainties, such as contamination from foreground galaxies and cosmic infrared background, we obtain the significant detection of the CMB lensing signal at 5.1σ that is dominated by 2-halo term signals of the LBGs. Fitting a simple model consisting of the Navarro-Frenk-White profile and the linear-bias model, we obtain the typical halo mass of Mh=2.9-2.5+9.5×1011 h-1 M. Combining the CMB lensing and galaxy-galaxy clustering signals on the large scales, we demonstrate the first cosmological analysis at z∼4 that constrains (ωm0,σ8). We find that our constraint on σ8 is roughly consistent with the Planck cosmology, while this σ8 constraint is lower than the Planck cosmology over the 1σ level. This study opens up a new window for constraining cosmological parameters at high redshift by the combination of CMB and high-z galaxies, as well as studying the interplay between galaxy evolution and large-scale structure at such high redshift, by upcoming CMB and optical and near-infrared imaging surveys.

DOI： 10.1103/PhysRevLett.129.061301

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PubMed

The SRG/eROSITA All-Sky Survey: Weak lensing of eRASS1 galaxy clusters in KiDS-1000 and consistency checks with DES Y3 and HSC-Y3 査読有り

Kleinebreil, F; Grandis, S; Schrabback, T; Ghirardini, V; Chiu, I; Liu, A; Kluge, M; Reiprich, TH; Artis, E; Bahar, YE; Balzer, F; Bulbul, E; Clerc, N; Comparat, J; Garrel, C; Gruen, D; Li, X; Miyatake, H; Miyazaki, S; Ramos-Ceja, ME; Sanders, J; Seppi, R; Okabe, N; Zhang, X

ASTRONOMY & ASTROPHYSICS 695 巻 2025年3月

Exploring the baryonic effect signature in the Hyper Suprime-Cam Year 3 cosmic shear two-point correlations on small scales: The S8 tension remains present 査読有り

Terasawa R., Li X., Takada M., Nishimichi T., Tanaka S., Sugiyama S., Kurita T., Zhang T., Shirasaki M., Takahashi R., Miyatake H., More S., Nishizawa A.J.

Physical Review D 111 巻 ( 6 ) 2025年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review D

The baryonic feedback effect is considered as a possible solution to the so-called S8 tension indicated in cosmic shear cosmology. The baryonic effect is more significant on smaller scales, and it affects the cosmic shear two-point correlation functions (2PCFs) with different scale and redshift dependencies from those of the cosmological parameters. In this paper, we use the Hyper Suprime-Cam Year 3 (HSC-Y3) data to measure the cosmic shear 2PCFs (ζ±) down to 0.28 arcminutes, taking full advantage of the high number density of source galaxies in the deep HSC data, to explore a possible signature of the baryonic effect. While the published HSC analysis used the cosmic shear 2PCFs on the angular scales that are sensitive to the matter power spectrum at k 1 h Mpc-1, the smaller-scale HSC cosmic shear signal allows us to probe the signature of the matter power spectrum up to k≃20 h Mpc-1. Using the accurate emulator of the nonlinear matter power spectrum, darkemulator2, we show that the dark-matter-only model can provide an acceptable fit to the HSC-Y3 2PCFs down to the smallest scales. In other words, we do not find any clear signature of the baryonic effects, or we do not find a systematic shift in the S8 value with the inclusion of the smaller-scale information as would be expected if the baryonic effect were significant. Alternatively, we use a flexible six-parameter model of the baryonic effects, which can lead to both enhancement and suppression in the matter power spectrum compared to the dark-matter-only model, to perform the parameter inference of the HSC-Y3 2PCFs. We find that the small-scale HSC data allow only a fractional suppression of up to 5% in the matter power spectrum at k∼1 h Mpc-1, which is not sufficient to reconcile the S8 tension. Finally, we discuss that ζ- on scales smaller than a few arcminutes can be used to monitor characteristic features caused by the baryonic effect if present, while ζ± with appropriate scale cuts can be used to constrain the cosmological parameters, simultaneously.

DOI： 10.1103/PhysRevD.111.063509

Scopus

The Blending ToolKit: A simulation framework for evaluation of galaxy detection and deblending 招待有り査読有り国際共著

2025年2月

Baryon Pasting the Uchuu Light-cone Simulation 査読有り

Lau, ET; Nagai, D; Farahi, A; Ishiyama, T; Miyatake, H; Osato, K; Shirasaki, M

ASTROPHYSICAL JOURNAL 980 巻 ( 1 ) 頁： 122 - 122 2025年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal

We present the Baryon Pasted (BP) X-ray and thermal Sunyaev-Zel’dovich (tSZ) maps derived from the half-sky Uchuu light-cone simulation. These BP-Uchuu maps are constructed using more than 75 million dark matter halos with masses M500c ≥ 1013 M⊙ within the redshift range 0 ≤ z ≤ 2. A distinctive feature of our BP-Uchuu light-cone maps is their capability to assess the influence of both extrinsic and intrinsic scatter caused by triaxial gaseous halos and internal gas characteristics, respectively, at the map level. We show that triaxial gas drives substantial scatter in X-ray luminosities of clusters and groups, accounting for nearly half of the total scatter in core-excised measurements. Additionally, scatter in the thermal pressure and gas density profiles of halos enhances the X-ray and SZ power spectra, leading to biases in cosmological parameter estimates. These findings are statistically robust due to the extensive sky coverage and large halo sample in the BP-Uchuu maps. The BP-Uchuu maps are publicly available online via Globus (https://app.globus.org/file-manager?origin_id=cf8dadb7-b6e9-4e2c-abc1-0813877efc13).

DOI： 10.3847/1538-4357/ada940

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Scopus

その他リンク： https://iopscience.iop.org/article/10.3847/1538-4357/ada940/pdf

WEAK-LENSING SHEAR-SELECTED GALAXY CLUSTERS FROM THE HYPER SUPRIME-CAM SUBARU STRATEGIC PROGRAM: I. CLUSTER CATALOG, SELECTION FUNCTION AND MASS-OBSERVABLE RELATION 査読有り Open Access

Chen K.F., Chiu I.N., Oguri M., Lin Y.T., Miyatake H., Miyazaki S., More S., Hamana T., Rau M.M., Sunayama T., Sugiyama S., Takada M.

Open Journal of Astrophysics 8 巻 2025年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Open Journal of Astrophysics

We present the first step toward deriving cosmological constraints through the abundances of galaxy clusters selected in a 510 deg2 weak-lensing aperture mass map, constructed with the Year-Three shear catalog from the Hyper Suprime-Cam Subaru Strategic Program. We adopt a conservative source galaxy selection to construct a sample of 129 weak-lensing peaks with a signal-to-noise ratio above 4.7. We use semi-analytical injection simulations to derive the selection function and the mass-observable relation of our sample. These results take into account complicated uncertainties associated with weak-lensing measurements, such as the non-uniform survey depth and the complex survey geometry, projection effects from uncorrelated large-scale structures, and the intrinsic alignment of source galaxies. We also propose a novel modeling framework to make parts of the mass-observable relation insensitive to assumed cosmological parameters. Such a framework not only offers a great computational advantage to cosmological studies, but can also benefit future astrophysical studies using shear-selected clusters. Our results are an important step toward utilizing these cluster samples that are constructed nearly independent of any baryonic assumptions in upcoming deep-and-wide lensing surveys from the Vera Rubin Observatory, Euclid, and the Nancy Grace Roman Space Telescope.

DOI： 10.33232/001c.128019

Open Access

Scopus

Dark Matter Halos of Luminous Active Galactic Nuclei from Galaxy-Galaxy Lensing with the HSC Subaru Strategic Program 査読有り Open Access

Luo, WT; Silverman, JD; More, S; Goulding, A; Miyatake, H; Nishimichi, T; Hikage, C; Kawinwanichakij, L; Li, JY; Li, QX; Li, XC; Medezinski, E; Oguri, M; Oogi, T; Sifon, C

ASTROPHYSICAL JOURNAL 977 巻 ( 1 ) 2024年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal

We assess the dark matter halo masses of luminous active galactic nuclei (AGNs) over the redshift range 0.2-1.2 using galaxy-galaxy lensing based on imaging data from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP). We measure the weak lensing signal of a sample of 48,907 AGNs constructed using HSC and Wide-field Infrared Survey Explorer photometry. As expected, we find that the lensing mass profile of total AGN sample is consistent with that of massive galaxies ( log ( M * / h − 2 M ⊙ ) ∼ 10.61). Surprisingly, the lensing signal remains unchanged when the AGN sample is split into four host galaxy stellar mass bins. Specifically, we find that the excess surface density of AGNs residing in galaxies with high stellar masses significantly differs from that of the control sample. We further fit a halo occupation distribution model to the data to infer the posterior distribution of parameters including the average halo mass. We find that the characteristic halo mass of the full AGN population lies near the knee ( log ( M h / h − 1 M ⊙ ) = 12.0 ) of the stellar-to-halo mass relation (SHMR). Illustrative of the results given above, the halo masses of AGNs residing in host galaxies with high stellar masses (i.e., above the knee of the SHMR) fall below the calibrated SHMR while the halo masses of the low stellar mass sample are more consistent with the established SHMR. These results indicate that massive halos with a higher clustering bias tend to suppress AGN activity, probably due to the lack of available gas.

DOI： 10.3847/1538-4357/ad86b5

Open Access

Web of Science

Scopus

The SRG/eROSITA All-Sky Survey: Constraints on f (R) gravity from cluster abundances. 査読有り国際共著

Artis, E; Ghirardini, V; Bulbul, E; Grandis, S; Garrel, C; Clerc, N; Seppi, R; Comparat, J; Cataneo, M; Bahar, YE; Balzer, F; Chiu, I; Gruen, D; Kleinebreil, F; Kluge, M; Krippendorf, S; Li, X; Liu, A; Merloni, A; Miyatake, H; Miyazaki, S; Nandra, K; Okabe, N; Pacaud, F; Predehl, P; Ramos-Ceja, ME; Reiprich, TH; Sanders, JS; Schrabback, T; Zelmer, S; Zhang, X

ASTRONOMY & ASTROPHYSICS 691 巻 2024年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

The evolution of the cluster mass function traces the growth of the linear density perturbations and can be utilized to constrain the parameters of cosmological and alternative gravity models. In this context, we present new constraints on potential deviations from general relativity by investigating the Hu-Sawicki parametrization of the f (R) gravity with the first Spectrum Roentgen Gamma (SRG)/eROSITA All-Sky Survey (eRASS1) cluster catalog in the western Galactic hemisphere in combination with the overlapping Dark Energy Survey Year-3, KiloDegree Survey, and Hyper Suprime-Cam data for weak lensing mass calibration. For the first time, we present constraints obtained from cluster abundances only. When we consider massless neutrinos, we find a strict upper limit of log |fR0| < -4.31 at a 95% confidence level. Massive neutrinos suppress structure growth at small scales, and thus have the opposite effect of f (R) gravity. We consequently investigate the joint fit of the mass of the neutrinos with the modified gravity parameter. We obtain log |fR0| < -4.08 jointly with mν < 0.49 eV at a 95% confidence level, which is tighter than the limits in the literature utilizing cluster counts only. At log |fR0| = -6, the number of clusters is not significantly changed by the theory. Consequently, we do not find any statistical deviation from general relativity in the study of eRASS1 cluster abundance. Deeper surveys with eROSITA, increasing the number of detected clusters, will further improve constraints on log |fR0| and investigate alternative gravity theories.

DOI： 10.1051/0004-6361/202449587

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Masses of Sunyaev-Zel'dovich galaxy clusters detected by the Atacama Cosmology Telescope: Stacked lensing measurements with Subaru HSC year 3 data 査読有り Open Access

Shirasaki, M; Sifón, C; Miyatake, H; Lau, E; Zhang, ZW; Bahcall, N; Battaglia, N; Devlin, M; Dunkley, J; Farahi, A; Hilton, M; Lin, YT; Nagai, D; Staggs, ST; Sunayama, T; Spergel, D; Wollack, EJ

PHYSICAL REVIEW D 110 巻 ( 10 ) 2024年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review D

We present a stacked lensing analysis of 96 galaxy clusters selected by the thermal Sunyaev-Zel'dovich (SZ) effect in maps of the cosmic microwave background (CMB). We select foreground galaxy clusters with a 5σ-level SZ threshold in CMB observations from the Atacama Cosmology Telescope, while we define background source galaxies for the lensing analysis with secure photometric redshift cuts in Year 3 data of the Subaru Hyper Suprime Cam survey. We detect the stacked lensing signal in the range of 0.1<R[h-1 Mpc]<100 in each of three cluster redshift bins, 0.092<z≤0.445, 0.445<z≤0.695, and 0.695<z≤1.180, with 32 galaxy clusters in each bin. The cumulative signal-to-noise ratios of the lensing signal are 14.6, 12.0, and 6.6, respectively. Using a halo-based forward model, we then constrain statistical relationships between the mass inferred from the SZ observation (i.e. SZ mass) and the total mass derived from our stacked lensing measurements. At the average SZ mass in the cluster sample (2.1-2.4×1014h-1M⊙), our likelihood analysis shows that the average total mass differs from the SZ counterpart by a factor of 1.3±0.2, 1.6±0.2, and 1.6±0.3 (68%) in the aforementioned redshift ranges, respectively. Our limits are consistent with previous lensing measurements, and we find that the cluster modeling choices can introduce a 1σ-level difference in our parameter inferences.

DOI： 10.1103/PhysRevD.110.103006

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Weak-Lensing Shear-Selected Galaxy Clus- ters from the Hyper Suprime-Cam Subaru Strategic Program: II. Cosmological Constraints from the Cluster Abundance. 査読有り

2024年10月

Optical cluster cosmology with SDSS redMaPPer clusters and HSC-Y3 lensing measurements 査読有り国際共著 Open Access

Sunayama, T; Miyatake, H; Sugiyama, S; More, S; Li, XC; Dalal, R; Rau, MM; Shi, JJ; Chiu, IN; Shirasaki, M; Zhang, TQ; Nishizawa, AJ

PHYSICAL REVIEW D 110 巻 ( 8 ) 2024年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review D

We present cosmology results obtained from a blind joint analysis of the abundance, projected clustering, and weak lensing of galaxy clusters measured from the Sloan Digital Sky Survey (SDSS) redMaPPer cluster catalog and the Hyper-Suprime Cam (HSC) Year 3 shape catalog. We present a full-forward model for the cluster observables, which includes empirical modeling for the anisotropic boosts on the lensing and clustering signals of optical clusters. We validate our analysis via mock cluster catalogs which include observational systematics, such as the projection effect and the effect of baryonic feedback, and find that our analysis can robustly constrain cosmological parameters in an unbiased manner without any informative priors on our model parameters. The joint analysis of our observables in the context of the flat ΛCDM model results in cosmological constraints for S8σ8ωm/0.3=0.816-0.039+0.041. Our result is consistent with the S8 inference from other cosmic microwave background-and large scale structure-based cosmology analyses, including the result from the Planck 2018 primary CMB analysis.

DOI： 10.1103/PhysRevD.110.083511

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LoVoCCS. II. Weak Lensing Mass Distributions, Red-sequence Galaxy Distributions, and Their Alignment with the Brightest Cluster Galaxy in 58 Nearby X-Ray-luminous Galaxy Clusters 査読有り国際共著

Fu, SM; Dell'Antonio, I; Escalante, Z; Nelson, J; Englert, A; Helhoski, S; Shinde, R; Brockland, J; Laduca, P; Larkin, C; Paris, L; Weiner, S; Black, WK; Chary, RR; Clowe, D; Cooper, MC; Donahue, M; Evrard, A; Lacy, M; Lauer, T; Liu, BY; Mccleary, J; Meneghetti, M; Miyatake, H; Montes, M; Natarajan, P; Ntampaka, M; Pierpaoli, E; Postman, M; Sohn, J; Turner, D; Utsumi, Y; Umetsu, K; Wilson, G

ASTROPHYSICAL JOURNAL 974 巻 ( 1 ) 2024年10月

The SRG/eROSITA all-sky survey: Cosmology constraints from cluster abundances in the western Galactic hemisphere 査読有り国際共著

Ghirardini, V; Bulbul, E; Artis, E; Clerc, N; Garrel, C; Grandis, S; Kluge, M; Liu, A; Bahar, YE; Balzer, F; Chiu, I; Comparat, J; Gruen, D; Kleinebreil, F; Krippendorf, S; Merloni, A; Nandra, K; Okabe, N; Pacaud, F; Predehl, P; Ramos-Ceja, ME; Reiprich, TH; Sanders, JS; Schrabback, T; Seppi, R; Zelmer, S; Zhang, X; Bornemann, W; Brunner, H; Burwitz, V; Coutinho, D; Dennerl, K; Freyberg, M; Friedrich, S; Gaida, R; Gueguen, A; Haberl, F; Kink, W; Lamer, G; Li, X; Liu, T; Maitra, C; Meidinger, N; Mueller, S; Miyatake, H; Miyazaki, S; Robrade, J; Schwope, A; Stewart, I

ASTRONOMY & ASTROPHYSICS 689 巻 2024年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

The evolution of the cluster mass function traces the growth of linear density perturbations, providing valuable insights into the growth of structures, the nature of dark matter, and the cosmological parameters governing the Universe. The primary science goal of eROSITA, on board the Spectrum Roentgen Gamma (SRG) mission, is to constrain cosmology through the evolution of the cluster mass function. In this paper, we present a set of cosmological constraints obtained from 5259 clusters of galaxies detected over an area of 12791 deg2 in the western Galactic hemisphere of eROSITA's first All-Sky Survey (eRASS1). The common footprint region (4968 deg2) between the eROSITA Survey and Dark Energy Survey (DES), the Kilo-Degree Survey (KiDS), and the Hyper Supreme Camera (HSC) survey is used for calibration of the scaling between X-ray count rate of the clusters and their total mass through measurements of their weak gravitational lensing signal. The eRASS1 cluster abundances constrain the λCDM parameters, namely, the energy density of the total matter to Ωm = 0.29- 0.02+0.01 and the normalization of the density fluctuations to σ8 = 0.88 ± 0.02, and their combination yields S8 = σ8(Ωm/0.3)0.5 = 0.86 ± 0.01. These results are consistent and achieve at a similar precision with state-of-the-art cosmic microwave background (CMB) measurements. Furthermore, the eRASS1 cosmological experiment places a most stringent upper limit on the summed masses of left-handed light neutrinos to σmv < 0.43 eV (95% confidence interval) from cluster number counts alone. By combining eRASS1 cluster abundance measurements with CMB- and ground-based neutrino oscillation experiments, we measured the summed neutrino masses to be σmv = 0.09- 0.02+0.04 eV or σmv = 0.12- 0.02+0.03 eV, assuming a normal or inverted mass hierarchy scenario for neutrino eigenstates. The eRASS1 cluster abundances significantly improve the constraints on the dark energy equation of state parameter to w = - 1.12 ± 0.12. When σmv and w are left free, we find consistent results with the concordance λCDM cosmology. Our results from the first All-Sky Survey improve the cosmological constraints by over a factor of 5 to 9 over the previous cluster surveys, establishing cluster abundance measurements for precision cosmology and setting the stage for deeper eROSITA All-Sky Surveys, as well as for future cluster abundance experiments.

DOI： 10.1051/0004-6361/202348852

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KiDS-1000: Combined halo-model cosmology constraints from galaxy abundance, galaxy clustering, and galaxy-galaxy lensing (Corrigendum) 査読有り国際共著

Dvornik, A; Heymans, C; Asgari, M; Mahony, C; Joachimi, B; Bilicki, M; Chisari, E; Hildebrandt, H; Hoekstra, H; Johnston, H; Kuijken, K; Mead, A; Miyatake, H; Nishimichi, T; Reischke, R; Unruh, S; Wright, AH

ASTRONOMY & ASTROPHYSICS 688 巻 2024年8月

Euclid: Early Release Observations – A preview of the Euclid era through a galaxy cluster magnifying lens 査読有り

H. Atek, R. Gavazzi, J. R. Weaver, et al.

Astronomy & Astrophysics 2024年7月

Euclid: Early Release Observations – Programme overview and pipeline for compact- and diﬀuse-emission photometry 査読有り

J. C. Cuillandre, E. Bertin, M. Bolzonella, et al.

Astronomy & Astrophysics 2024年7月

Euclid. I. Overview of the Euclid mission 招待有り査読有り

Euclid Collaboration

Astronomy & Astrophysics 2024年5月

The intrinsic alignment of galaxy clusters and impact of projection effects 査読有り国際共著

Shi, JJ; Sunayama, T; Kurita, T; Takada, M; Sugiyama, S; Mandelbaum, R; Miyatake, H; More, S; Nishimichi, T; Johnston, H

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 528 巻 ( 2 ) 頁： 1487 - 1499 2024年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Monthly Notices of the Royal Astronomical Society

Galaxy clusters, being the most massive objects in the Universe, exhibit the strongest alignment with the large-scale structure. However, mis-identification of members due to projection effects from the large-scale structure can occur. We studied the impact of projection effects on the measurement of the intrinsic alignment of galaxy clusters, using galaxy cluster mock catalogues. Our findings showed that projection effects result in a decrease of the large-scale intrinsic alignment signal of the cluster and produce a bump at rp ∼ 1 h-1 Mpc, most likely due to interlopers and missed member galaxies. This decrease in signal explains the observed similar alignment strength between bright central galaxies and clusters in the SDSS redMaPPer cluster catalogue. The projection effect and cluster intrinsic alignment signal are coupled, with clusters having lower fractions of missing members or having higher fraction of interlopers exhibiting higher alignment signals in their projected shapes. We aim to use these findings to determine the impact of projection effects on galaxy cluster cosmology in future studies.

DOI： 10.1093/mnras/stae064

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