Chihway Chang

KICP Fellow

Ph.D., Stanford University, 2013
 
Contact Information
Location: ERC 427
Email: chihwaykicp.uchicago.edu
WWW: Web Site
 
Research
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:
 
Talks, Lectures, & Workshops
 
Currently in Committees
  • Friday Seminar committee

 
KICP Publications
2018 | 2017 | 2016


Latest Journal Publications
  1. "Survey geometry and the internal consistency of recent cosmic shear measurements", Monthly Notices of the Royal Astronomical Society, Volume 479, Issue 4, p.4998-5004 (Oct 2018)
  2. "Improving weak lensing mass map reconstructions using Gaussian and sparsity priors: application to DES SV", Monthly Notices of the Royal Astronomical Society, Volume 479, Issue 3, p.2871-2888 (Sep 2018)
  3. "PTOLEMY: A Proposal for Thermal Relic Detection of Massive Neutrinos and Directional Detection of MeV Dark Matter", arXiv:1808.01892 (Aug 2018)
  4. "Dark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxies", Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 1, p.592-610 (Jul 2018)
  5. "Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data", Monthly Notices of the Royal Astronomical Society, Advance Access (Jul 2018)
  6. "Density split statistics: Joint model of counts and lensing in cells", Physical Review D, Volume 98, Issue 2, id.023508 (Jul 2018)
  7. "Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS data", Physical Review D, Volume 98, Issue 2, id.023507 (Jul 2018)
  8. "Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization", Monthly Notices of the Royal Astronomical Society, Volume 477, Issue 2, p.1664-1682 (Jun 2018)
  9. "Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg2 SPT-SZ and Planck Gravitational Lensing Map", The Astrophysical Journal, Volume 860, Issue 2, article id. 137, 9 pp. (2018) (Jun 2018)
  10. "Survey geometry and the internal consistency of recent cosmic shear measurements", Monthly Notices of the Royal Astronomical Society: Letters, Advance Access (Jun 2018)
  11. "A measurement of CMB cluster lensing with SPT and DES year 1 data", Monthly Notices of the Royal Astronomical Society, Volume 476, Issue 2, p.2674-2688 (May 2018)
  12. "Improving Weak Lensing Mass Map Reconstructions using Gaussian and Sparsity Priors: Application to DES SV", Monthly Notices of the Royal Astronomical Society, Advance Access (May 2018)
  13. "2015 BP519", Minor Planet Electronic Circ., No. 2018-J36 (2018) (May 2018)
  14. "Optical Characterization of the SPT-3G Camera", Journal of Low Temperature Physics, Online First (May 2018)
  15. "Dark Energy Survey Year 1 results: curved-sky weak lensing mass map", Monthly Notices of the Royal Astronomical Society, Volume 475, Issue 3, p.3165-3190 (Apr 2018)
  16. "Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies", Monthly Notices of the Royal Astronomical Society, Advance Access (Apr 2018)
  17. "Survey geometry and the internal consistency of recent cosmic shear measurements", arXiv:1804.10663 (Apr 2018)
  18. "New Science, New Media: An Assessment of the Online Education and Public Outreach Initiatives of The Dark Energy Survey", arXiv:1804.00591 (Apr 2018)
  19. "Maps of the Southern Millimeter-wave Sky from Combined 2500 deg$^2$ SPT-SZ and Planck Temperature Data", arXiv:1803.10682 (Mar 2018)
  20. "Dark Energy Survey Year 1 Results: Methodology and Projections for Joint Analysis of Galaxy Clustering, Galaxy Lensing, and CMB Lensing Two-point Functions", arXiv:1802.05257 (Feb 2018)

Latest Conference Proceedings
  1. "Dark energy survey operations: years 4 and 5", Proceedings of the SPIE, Volume 10704, id. 107040D 18 pp. (2018) (Jul 2018)

 
Visitors
Past Visitors:
  1. Deborah Bard, NERSc, LBNL (2018)
  2. Eric Baxter, University of Pennsylvania (2018)
  3. Chi-Ting Chiang, C.N. Yang Institute for Theoretical Physics/Stony Brook University (2018)
  4. Pier Fiedorowicz, University of Arizona (2018)
  5. Marco Gatti, IFAE Barcelona (2018)
  6. Andrew Hearin, Argonne National Lab (2018)
  7. Daniel Jacobs, Arizona State University (2018)
  8. Yao-Yuan Mao, University of Pittsburgh (2018)
  9. John Mates, University of Colorado, Boulder (2018)
  10. Jessica Turner, Fermi National Accelerator Laboratory (2018)
  11. Yuanyuan Zhang, Fermilab (2018)
  12. Ami Choi, The Ohio State University (2017)
  13. Stephen Feeney, Flatiron Institute (2017)
  14. Francois Lanusse, Carnegie Mellon University (2017)