Takashi Hamana's web page

Research interests:

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

Preprints:

• An empirical method for mitigating an excess up-scattering mass bias on the weak lensing mass estimates for shear-selected cluster samples
  Takashi Hamana
  accepted for publication in PASJ
  Preprint (arXiv:2210.07446)
  

Recent publications:

• E/B mode decomposition of HSC-Y1 cosmic shear using COSEBIs: cosmological constraints and comparison with other two-point statistics
  Takashi Hamana, Chiaki Hikage, Masamune Oguri, Masato Shirasaki, and Surhud More
  PASJ, 74 (4), 923-945 (2022)
  Reprint (link to ADS)
  MultiNest chain is available from this link
  
• The three-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
  Xiangchong Li, Hironao Miyatake, Wentao Luo, Surhud More, Masamune Oguri, Takashi Hamana, Rachel Mandelbaum, Masato Shirasaki, Masahiro Takada, Robert Armstrong, Arun Kannawadi, Satoshi Takita, Satoshi Miyazaki, Atsushi J. Nishizawa, Andres A. Plazas Malagon, Michael A. Strauss, Masayuki Tanaka, and Naoki Yoshida
  PASJ, 74, 421L (2022)
  Reprint (link to ADS)
  
• Weak lensing clusters from HSC survey first-year data: Mitigating the dilution effect of foreground and cluster member galaxies
  Takashi Hamana, Masato Shirasaki, and Yen-Ting Lin
  PASJ, 72, 78H (2020)
  Reprint (link to ADS)
  Preprint with full resolution figures and additional information about weak lensing peaks are available from this link
  

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