Takashi Hamana's web page

Research interests:

• Observational cosmology
• Large-scale Structure formation in the Universe
• Formation of galaxies/galaxy clusters
• Gravitational Lensing

Preprints:

• photo-3x2-pt: Cosmology from cosmic shear and galaxy clustering with a single photometric galaxy catalog
  Takashi Hamana
  accepted for publication in PASJ
  Preprint (arXiv:2608.05530)
  

Recent publications:

• The uncommon intracluster medium features of the first massive clusters selected independently of their baryon content
  S. Andreon, M. Radovich, A. F.-X. Moretti, Desert, T. Hamana, M. Pizzardo, C. Romero, H. Roussel, G. Trinchieri
  MNRAS, 536, 3466 (2025)
  Reprint (link to ADS)
  
• Weak-Lensing Shear-Selected Galaxy Clusters from the Hyper Suprime-Cam Subaru Strategic Program: II. Cosmological Constraints from the Cluster Abundance
  I.-N. Chiu, K.-F. Chen, M. Oguri, M.~M. Rau, T. Hamana, Y.-T. Lin, H. Miyatake, S. Miyazaki, S. More, T. Sunayama, S. Sugiyama, M. Takada
  The Open Journal of Astrophysics, 7 90 (2024)
  Reprint (link to ADS)
  
• Hyper Suprime-Cam Year 3 results: Cosmology from galaxy clustering and weak lensing with HSC and SDSS using the minimal bias model
  S. Sugiyama, H. Miyatake, S. More, X. Li, M. Shirasaki, M. Takada, Y. Kobayashi, R. Takahashi, T. Nishimichi, A.~J. Nishizawa, M.~M. Rau, T. Zhang, R. Dalal, R. Mandelbaum, M.~A. Strauss, T. Hamana, M. Oguri, K. Osato, A. Kannawadi, B.-C. Hsieh, W. Luo, R. Armstrong, J. Bosch, Y. Komiyama, R.~H. Lupton, N.~B. Lust, S. Miyazaki, H. Murayama, Y. Okura, P.~A. Price, P.~J. Tait, M. Tanaka, S.-Y. Wang
  Physical Review D, 108 123521 (2023)
  Reprint (link to ADS)
  
• Hyper Suprime-Cam Year 3 results: Measurements of clustering of SDSS-BOSS galaxies, galaxy-galaxy lensing, and cosmic shear
  S. More, S. Sugiyama, H. Miyatake, M.~M. Rau, M. Shirasaki, X. Li, A.~J. Nishizawa, K. Osato, T. Zhang, M. Takada, T. Hamana, R. Takahashi, R. Dalal, R. Mandelbaum, M.~A. Strauss, Y. Kobayashi, T. Nishimichi, M. Oguri, W. Luo, A. Kannawadi, B.-C. Hsieh, R. Armstrong, J. Bosch, Y. Komiyama, R.~H. Lupton, N.~B. Lust, L.~A. MacArthur, S. Miyazaki, H. Murayama, Y. Okura, P.~A. Price, P.~J. Tait, M. Tanaka, S.-Y. Wang
  Physical Review D, 108 123520 (2023)
  Reprint (link to ADS)
  
• Hyper Suprime-Cam Year 3 results: Cosmology from cosmic shear power spectra
  R. Dalal, X. Li, A. Nicola, J. Zuntz, M.~A. Strauss, S. Sugiyama, T. Zhang, M.~M. Rau, R. Mandelbaum, M. Takada, S. More, H. Miyatake, A. Kannawadi, M. Shirasaki, T. Taniguchi, R. Takahashi, K. Osato, T. Hamana, M. Oguri, A.~J. Nishizawa, A.~A.~P. Malag{\'o}n, T. Sunayama, D. Alonso, A. Slosar, W. Luo, R. Armstrong, J. Bosch, B.-C. Hsieh, Y. Komiyama, R.~H. Lupton, N.~B. Lust, L.~A. MacArthur, S. Miyazaki, H. Murayama, T. Nishimichi, Y. Okura, P.~A. Price, P.~J. Tait, M. Tanaka, S.-Y. Wang
  Physical Review D, 108 123519 (2023)
  Reprint (link to ADS)
  
• Hyper Suprime-Cam Year 3 results: Cosmology from cosmic shear two-point correlation functions
  X. Li, T. Zhang, S. Sugiyama, R. Dalal, R. Terasawa, M.~M. Rau, R. Mandelbaum, M. Takada, S. More, M.~A. Strauss, H. Miyatake, M. Shirasaki, T. Hamana, M. Oguri, W. Luo, A.~J. Nishizawa, R. Takahashi, A. Nicola, K. Osato, A. Kannawadi, T. Sunayama, R. Armstrong, J. Bosch, Y. Komiyama, R.~H. Lupton, N.~B. Lust, L.~A. MacArthur, S. Miyazaki, H. Murayama, T. Nishimichi, Y. Okura, P.~A. Price, P.~J. Tait, M. Tanaka, & S.-Y. Wang
  Physical Review D, 108 123518 (2023)
  Reprint (link to ADS)
  
• Hyper Suprime-Cam Year 3 results: Cosmology from galaxy clustering and weak lensing with HSC and SDSS using the emulator based halo model H. Miyatake, S. Sugiyama, M. Takada, T. Nishimichi, X. Li, M. Shirasaki, S. More, Y. Kobayashi, A.~J. Nishizawa, M.~M. Rau, T. Zhang, R. Takahashi, R. Dalal, R. Mandelbaum, M.~A. Strauss, T. Hamana, M. Oguri, K. Osato, W. Luo, A. Kannawadi, B.-C. Hsieh, R. Armstrong, J. Bosch, Y. Komiyama, R.~H. Lupton, N.~B. Lust, L.~A. MacArthur, S. Miyazaki, H. Murayama, Y. Okura, P.~A. Price, T. Sunayama, P.~J. Tait, M. Tanaka, S.-Y. Wang
  Physical Review D, 108 123517 (2023)
  Reprint (link to ADS)
  
• An empirical method for mitigating an excess up-scattering mass bias on the weak lensing mass estimates for shear-selected cluster samples
  T. Hamana
  PASJ, 75 14 (2023)
  Reprint (link to ADS)
  

Public release:

• Public data of the excess up-scattering mass bias corrected cluster masses (Hamana 2023) of HSC S19A shear selected clusters (with TI05 set-up) from Oguri et al. (2021)
• Public data of the weak lensing clusters from HSC-SSP s16a data (Hamana et al 2020), with the excess up-scattering mass bias corrected cluster masses (Hamana 2023)
• Public data from the cosmic shear COSEBIs analysis with HSC-SSP s16a data (Hamana et al 2022)
• Public data from the cosmic shear TPCF analysis with HSC-SSP s16a data (Hamana et al 2020)
• GRayTrix: freely available software for the numerical simulation of full-sky gravitational lensing ray-tracing
• RAYTRIX: freely available software for the numerical simulation of gravitational lensing ray-tracing
• Lensing simulation data from Sato, TH, et al 2009
• Lensing simulation data generated from the VLS Nbody simulation
• Lensing simulation with Hubble volume simulation
• Some fortran programs
• Some python softwares