::: Sitemap Chinese Version中文 PrintPrint Friendly search help
People > Visiting Scholar > Curriculum Vita
21cm brightness fluctuation at z=0.8 in cross-correlation
An intensity map of hydrogen 21-cm emission at redshift z ≈ 0.8
The GMRT Epoch of Reionization experiment: a new upper limit on the neutral hydrogen power spectrum at z ≈ 8.6
Chang, Tzu-Ching
Visiting Scholar (JPL, Caltech)
photo of Chang, Tzu-Ching
Email: zu-ching.chang_replace2@_jpl.nasa.gov

Education and Positions

  • Assistant Research Fellow, ASIAA (2010~present)
  • CITA-ASIAA Postdoctoral Fellow, Canadian Institute for Theoretical Astrophysics and ASIAA (2006~2010)
  • TAC Fellow, UC Berkeley (2003~2006)
  • Ph.D, Astrophysics, Columbia University (2003)
  • B.S., Physics, National Taiwan University (1997)

Honors & Awards

  • TWAS Young Affiliate (2012~2016)
  • Academia Sinica Distinguished Postdoctoral Fellowship (2007~2009)
  • TAC Fellowship, UC Berkeley (2003)

Research Interests

21-cm Cosmology; Cosmic Reionization; Gravitational Lensing; Large-scale Structure

Journal Papers affiliated with ASIAA

  1. Wang W-H; Foucaud S; Hsieh B-C; Jian H-Y; Lin L; Lin Y-T; Coupon J; Hashimoto Y; Ouchi M; Shimasaku K; Ohyama Y; Umetsu K; Wang S-Y; Chang T-C, "MUSUBI (MegaCam Ultra-deep Survey: u*-band Imaging) Data for the COSMOS and SXDS Fields" , ApJS: 260(2), id.54 (15 pp), June, 2022 [SCI] ( ADS | Fulltext )
  2. Wolz L; Pourtsidou A; Masui KW; Chang T-C; Bautista JE; Müller E-M; Avila S; Bacon D; Percival WJ; Cunnington S; Anderson C; Chen X; Kneib J-P; Li Y-C; Liao Y-W; Pen U-L; Peterson JB; Rossi G; Schneider DP; Yadav J; Zhao G-B, "H I constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps" , MNRAS: 510(3), 3495–3511, Mar, 2022 [SCI] ( ADS | Fulltext )
  3. Sun G; Chang T-C; Uzgil BD; Bock JJ; Bradford CM; Butler V; Caze-Cortes T; Cheng Y-T; Cooray A; Crites AT; Hailey-Dunsheath S; Emerson N; Frez C; Hoscheit BL; Hunacek J; Keenan RP; Li CT; Madonia P; Marrone DP; Moncelsi L; Shiu C; Trumper I; Turner A; Weber A; Wei TS; Zemcov M, "Probing Cosmic Reionization and Molecular Gas Growth with TIME" , ApJ: 915(1), id.33 (24 pp), Jul, 2021 [SCI] ( ADS | Fulltext )
  4. Cheng Y-T; Chang T-C; Bock JJ, "Phase-space Spectral Line Deconfusion in Intensity Mapping" , ApJ: 901(2), id.142 (20pp.), Oct, 2020 [SCI] ( ADS | Fulltext )
  5. Cheng Y-T; de Putter R; Chang T-C, et al., "Optimally Mapping Large-scale Structures with Luminous Sources" , ApJ: 877(2), id. 86 (21 pp.), Jun, 2019 [SCI] ( ADS | Fulltext )
  6. Feng C; Cooray A; Bock J; Chang TC; et al., "Multi-component Decomposition of Cosmic Infrared Background Fluctuations" , ApJ: 875(2), id. 86 (13 pp.), Apr, 2019 [SCI] ( ADS | Fulltext )
  7. Anderson CJ; Luciw NJ; Li Y-C; Kuo CY; ...; Chang T-C; ...; Liao Y-W; Pen, U.-L.; et al., "Low-amplitude clustering in low-redshift 21-cm intensity maps cross-correlated with 2dF galaxy densities" , MNRAS: 476(3), 3382-3392, May, 2018 [SCI] ( ADS | Fulltext )
  8. Hunacek J; Bock J; Bradford CM; ...; Chang TC; ...; Li CT; et al., "Hafnium Films and Magnetic Shielding for TIME, A mm-Wavelength Spectrometer Array" , J Low Temp Phys: 193(5-6), 893-900, Dec, 2018 [SCI] ( ADS | Fulltext )
  9. Pullen AR; Serra P; Chang T-C; et al., "Search for C II Emission on Cosmological Scales at Redshift Z ˜ 2.6" , MNRAS: 478(2), 1911-1924, Aug, 2018 [SCI] ( ADS | Fulltext )
  10. Sun G; Moncelsi L; Viero MP; ...; Chang T-C; et al., "A Foreground Masking Strategy for [C II] Intensity Mapping Experiments Using Galaxies Selected by Stellar Mass and Redshift" , ApJ: 856(2), 107, April, 2018 [SCI] ( ADS | Fulltext )
  11. Suyu SH; Chang T-C; Courbin F; Okumura T, "Cosmological distance indicators" , Space Sci Rev: 214(5), id. 91 (34 pp.), Aug, 2018 [SCI] ( ADS | Fulltext )
  12. Wolz L; Blake C; Abdalla FB; ...; Chang T-C; et al., "Erasing the Milky Way: new cleaning technique applied to GBT intensity mapping data" , MNRAS: 464(4), 4938-4949, Feb, 2017 [SCI] ( ADS | Fulltext )
  13. Cheng Y-T; Chang T-C; Bock J; et al., "Spectral Line De-confusion in an Intensity Mapping Survey" , ApJ: 832(2), 165, Dec, 2016 [SCI] ( ADS | Fulltext )
  14. Cohn JD; White M; Chang T-C; et al., "Combining galaxy and 21-cm surveys" , MNRAS: 457(2), 2068-2077, April, 2016 [SCI] ( ADS | Fulltext )
  15. Hunacek J; Bock J; Bradford CM; ...; Chang TC; Cheng, YT; ...; Koch P; Li CT; et al., "Design and Fabrication of TES Detector Modules for the TIME-Pilot [CII] Intensity Mapping Experiment" , J Low Temp Phys: 184(3-4), 733-738, Aug, 2016 [SCI] ( ADS | Fulltext )
  16. Liao Y-W; Chang T-C; Kuo C-Y; et al., "Accurate Polarization Calibration at 800 MHz with the Green Bank Telescope" , ApJ: 833(2), 289, Dec, 2016 [SCI] ( ADS | Fulltext )
  17. Venumadhav T; Chang T-C; Doré O; Hirata CM, "A Practical Theorem on Using Interferometry to Measure the Global 21-cm Signal" , ApJ: 826(2), 116, Aug 1, 2016 [SCI] ( ADS | Fulltext )
  18. Keating GK; Bower GC; Marrone DP; ...; Chang T-C; et al., "First Results from COPSS: The CO Power Spectrum Survey" , ApJ: 814(2), 140, Dec, 2015 [SCI] ( ADS | Fulltext )
  19. Masui K; Lin HH; Sievers J; Anderson CJ; Chang TC; Chen XL;Ganguly A; Jarvis M; Kuo CY; Li YC; Liao YW; et al., "Dense magnetized plasma associated with a fast radio burst" , Nature: 528(7583), 523–525, Dec 24, 2015 [SCI] ( ADS | Fulltext )
  20. Rhodes J; Allen S; Benson BA; Chang T; et al., "Exploiting Cross Correlations and Joint Analyses" , Astroparticle Physics: 63, 42-54, Mar, 2015 [SCI] ( ADS | Fulltext )
  21. Switzer ER; Chang T-C; Masui KW; Pen U-L; Voytek TC, "Interpreting the Unresolved Intensity of Cosmologically Redshifted Line Radiation" , ApJ: 815(1), 51, Dec, 2015 [SCI] ( ADS | Fulltext )
  22. Krause E; Chang T-C; Dor'e O; Umetsu K, "The Weight of Emptiness: The Gravitational Lensing Signal of Stacked Voids" , ApJL: 762(2), L20, Jan, 2013 [SCI] ( ADS | Fulltext )
  23. Masui KW; Switzer ER; Banavar N; ...; Chang T-C; ...; Liao Y-W; al., "Measurement of 21 cm brightness fluctuations at z ~ 0.8 in cross-correlation" , ApJL: 763(1), L20, Jan 20, 2013 [SCI] ( ADS | Fulltext )
  24. Paciga G; Albert JG; Bandura K; Chang T-C; et al., "A simulation-calibrated limit on the H I power spectrum from the GMRT Epoch of Reionization experiment" , MNRAS: 433(1), 639-647, July, 2013 [SCI] ( ADS | Fulltext )
  25. Pober JC; Parsons AR; DeBoer DR; ...; Chang TC; et al., "The Baryon Acoustic Oscillation Broadband and Broad-beam Array: Design Overview and Sensitivity Forecasts" , AJ: 145 (3), 65, Mar, 2013 [SCI] ( ADS | Fulltext )
  26. Pullen AR; Chang TC; Dore O; Lidz A, "Cross-correlations as a Cosmological Carbon Monoxide Detector" , ApJ: 768(1), 15, May 1, 2013 [SCI] ( ADS | Fulltext )
  27. Switzer ER; Masui KW; Bandura K; ...; Chang T-C; ...; Liao Y-W; et al., "Determination of z ˜ 0.8 neutral hydrogen fluctuations using the 21 cm intensity mapping autocorrelation" , MNRAS: 434(1), L46-L50, July, 2013 [SCI] ( ADS | Fulltext )
  28. Lidz A; Furlanetto SR; Oh SP; Aguirre J; Chang T-C; Dore O; Pritchard JR, "Intensity Mapping with Carbon Monoxide Emission Lines and the Redshifted 21 cm Line" , ApJ: 741(2), 70, Nov 10, 2011 [SCI] ( ADS | Fulltext )
  29. Paciga G; Chang T-C; Gupta Y; et al., "The GMRT Epoch of Reionization experiment: a new upper limit on the neutral hydrogen power spectrum at z≈ 8.6" , MNRAS: 413(2), 1174-1183, May, 2011 [SCI] ( ADS | Fulltext )
  30. Alvarez MA; Pen UL; Chang T-C, "Enhanced Detectability of Pre-reionization 21-cm Structure" , ApJ: 723(1), L17-L21, Nov 1, 2010 [SCI] ( ADS | Fulltext )
  31. Chang T-C; Pen UL; Bandura K; Peterson JB, "An intensity map of hydrogen 21-cm emission at redshift z approximate to 0.8" , Nature: 466(7305), 463-465, Jul 22, 2010 [SCI] ( ADS | Fulltext )
  32. Pen U-L; Staveley-Smith L; Peterson J; Chang T-C, "First Detection of Cosmic Structure in the 21-cm Intensity Field" , MNRAS: 394(1), L6-L10, Mar, 2009 [SCI] ( ADS | Fulltext )
  33. Pen UL; Chang T-C; Hirata CM; et al., "The GMRT EoR experiment: limits on polarized sky brightness at 150 MHz" , MNRAS: 399(1), 181-194, OCT 11, 2009 [SCI] ( ADS | Fulltext )
  34. Chang T-C; Pen U-L; Peterson JB; McDonald P, "Baryon Acoustic Oscillation Intensity Mapping of Dark Energy" , Phys Rev Lett: 100(9), Art. No. 091303, March 7, 2008 [SCI] ( ADS | Fulltext )
  35. Cohn JD; Chang T-C, "Source mergers and bubble growth during reionization" , MNRAS: 374(1), 72-94, Jan, 2007 [SCI] ( ADS | Fulltext )
TEL: 886-2-3365-2200 FAX: 886-2-2367-7849
General: asiaa_replace2@_asiaa.sinica.edu.tw Media Request: epo_replace2@_asiaa.sinica.edu.tw
11F of AS/NTU Astronomy-Mathematics Building, No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.