Chihway Chang

KICP Fellow

Ph.D., Stanford University, 2013
Contact Information
Location: ERC 427
WWW: Web Site
I work on weak gravitational lensing data in the Dark Energy Survey and different techniques in combining these measurements with other data sets such as the galaxy position and CMB lensing. I like to explore the weak lensing data in non-conventional ways to learn about cosmology as well as galaxy evolution. With a background in (LSST and DES) image simulations, I rely on various kinds of simulations in my work. On the side, I am interested in the prospects of HI intensity mapping in the future large radio projects.

Ongoing Scientific Projects:
Currently in Committees
  • Friday Seminar committee

KICP Publications
2017 | 2016

Latest Journal Publications
  1. "A 2500 deg2 CMB Lensing Map from Combined South Pole Telescope and Planck Data", The Astrophysical Journal, Volume 849, Issue 2, article id. 124, 16 pp. (2017) (Nov 2017)
  2. "Dark Energy Survey Year 1 Results: A Precise H0 Measurement from DES Y1, BAO, and D/H Data", arXiv:1711.00403 (Nov 2017)
  3. "Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS", arXiv:1710.05045 (Oct 2017)
  4. "Density split statistics: joint model of counts and lensing in cells", arXiv:1710.05162 (Oct 2017)
  5. "Dark Energy Survey Year 1 Results: Cross-Correlation Redshifts in the DES -- Calibration of the Weak Lensing Source Redshift Distributions", arXiv:1710.02517 (Oct 2017)
  6. "The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles", arXiv:1710.06808 (Oct 2017)
  7. "CMB Polarization B-mode Delensing with SPTpol and Herschel", The Astrophysical Journal, Volume 846, Issue 1, article id. 45, 17 pp. (2017) (Sep 2017)
  8. "Dark Energy Survey Year 1 Results: Cross-Correlation Redshifts - Methods and Systematics Characterization", arXiv:1709.00992 (Sep 2017)
  9. "Dark Energy Survey Year 1 Results: Curved-Sky Weak Lensing Mass Map", arXiv:1708.01535 (Aug 2017)
  10. "A Measurement of CMB Cluster Lensing with SPT and DES Year 1 Data", arXiv:1708.01360 (Aug 2017)
  11. "Dark Energy Survey Year 1 Results: Cosmological Constraints from Cosmic Shear", arXiv:1708.01538 (Aug 2017)
  12. "Dark Energy Survey Year 1 Results: Galaxy-Galaxy Lensing", arXiv:1708.01537 (Aug 2017)
  13. "Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies", arXiv:1708.01532 (Aug 2017)
  14. "Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing", arXiv:1708.01530 (Aug 2017)
  15. "Measurements of the Temperature and E-Mode Polarization of the CMB from 500 Square Degrees of SPTpol Data", arXiv:1707.09353 (Jul 2017)
  16. "A Comparison of Cosmological Parameters Determined from CMB Temperature Power Spectra from the South Pole Telescope and the Planck Satellite", arXiv:1706.10286 (Jun 2017)
  17. "Dark Energy Survey Year 1 Results: Multi-Probe Methodology and Simulated Likelihood Analyses", arXiv:1706.09359 (Jun 2017)
  18. "The Halo Boundary of Galaxy Clusters in the SDSS", The Astrophysical Journal, Volume 841, Issue 1, article id. 18, 17 pp. (2017) (May 2017)
  19. "Testing the lognormality of the galaxy and weak lensing convergence distributions from Dark Energy Survey maps", Monthly Notices of the Royal Astronomical Society, Volume 466, Issue 2, p.1444-1461 (Apr 2017)
  20. "A Comparison of Maps and Power Spectra Determined from South Pole Telescope and Planck Data", arXiv:1704.00884 (Apr 2017)

Current & Future Visitors:
  1. Ami Choi, The Ohio State University
Past Visitors:
  1. Stephen Feeney, Flatiron Institute (2017)
  2. Francois Lanusse, Carnegie Mellon University (2017)