People · Core Member

Syed Ashraf Uddin

PhD · A Core Member of CASSA — charting the expansion history of the Universe with Type Ia supernovae.

Photo of Syed Ashraf Uddin Core Member

Syed Ashraf Uddin

PhD

Associate Professor, Department of Physical Sciences, IUB (Independent University, Bangladesh)

Trained at

PhD: Swinburne University of Technology, Australia · Postdoc: Texas A&M University, USA · Postdoc: Carnegie Observatories (Carnegie Institution for Science), USA

Research

Uses Type Ia supernovae as standard candles to measure cosmic distances, probe dark energy, and address the Hubble tension.

Google ScholarNASA/ADSWebsite

Core Member · CASSA

Biography

Syed Ashraf Uddin is a supernova cosmologist. He uses Type Ia supernovae as standardizable candles to chart the expansion history of the Universe — measuring the Hubble-Lemaître constant () with multiple distance calibrations, probing dark energy, and quantifying how the galaxies that host supernovae bias their standardized brightness, a key systematic for precision cosmology and the Hubble tension.

He earned his PhD in astrophysics from Swinburne University of Technology, Australia, with a thesis on the influence of host galaxies in supernova cosmology, after an MS in physics from the University of Kentucky, an MSc in radio astronomy and space science from Chalmers University of Technology, Sweden, and a BSc in mechanical engineering from BUET. As a Postdoctoral Fellow of the Carnegie Supernova Project at the Observatories of the Carnegie Institution for Science, and then at Texas A&M University, he worked on the supernova distance ladder; he has also served as an Astronomer in the Celestial Reference Frame Division of the US Naval Observatory and taught astronomy at the University of South Carolina. He is a member of the Dark Energy Survey and its OzDES spectroscopic programme, and of the POISE collaboration observing infant supernova explosions.

He joined the Department of Physical Sciences at IUB as an Associate Professor in January 2026 and is a Core Member of CASSA. He referees for The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

Work & education

Years Role / Qualification Institution
Work
2026 – present Core Member CASSA · IUB, Bangladesh
2026 – present Associate Professor Department of Physical Sciences, IUB · Dhaka, Bangladesh
2024 – 2025 Astronomy Instructor Department of Physics and Astronomy, University of South Carolina · Columbia, SC, USA
2023 Astronomer, Celestial Reference Frame Division US Naval Observatory · Washington, DC, USA
2021 – 2022 Postdoctoral Research Associate Department of Physics and Astronomy, Texas A&M University · College Station, TX, USA
2018 – 2021 Postdoctoral Fellow, Carnegie Supernova Project Observatories of the Carnegie Institution for Science · Pasadena, CA, USA
Education
2016 PhD in Astrophysics Thesis: On the influence of the host galaxy in supernova cosmology Swinburne University of Technology · Melbourne, Australia
2011 MS in Physics University of Kentucky · Lexington, KY, USA
2006 MSc in Radio Astronomy and Space Science Chalmers University of Technology · Gothenburg, Sweden
2003 BSc in Mechanical Engineering Bangladesh University of Engineering and Technology · Dhaka, Bangladesh

Publications

Complete list of 37 papers, combining NASA ADS and Google Scholar — sortable by ADS citations, Scholar citations, or Uddin share. Totals: 2,818 ADS citations · 3,772 Scholar citations · h-index 24. Snapshot 11 July 2026.

All 3,772 citations · h 24 · i10 30
since 2021 2,601 citations · h 24 · i10 27

Citations received per year, from Google Scholar (the graph omits pre-2015). Snapshot 11 July 2026.

Sort by
Year Paper ADS Scholar Uddin share
2026 The Local Distance Network: A community consensus report on the measurement of the Hubble constant at ∼1% precision H0DN Collaboration; Casertano, Stefano; Anand, Gagandeep; … Uddin, Syed A. et al. · Astronomy and Astrophysics 68 50 2%
2026 Carnegie Supernova Project: Fast-declining Type Ia Supernovae as Cosmological Distance Indicators Phillips, M. M.; Uddin, Syed A.; Burns, Christopher R. et al. · The Astrophysical Journal 7 2 45%
2024 Carnegie Supernova Project I and II: Measurements of H₀ Using Cepheid, Tip of the Red Giant Branch, and Surface Brightness Fluctuation Distance Calibration to Type Ia Supernovae Uddin, Syed A.; Burns, Christopher R.; Phillips, M. M. et al. · The Astrophysical Journal 46 64 90%
2024 Newly formed dust within the circumstellar environment of SN Ia-CSM 2018evt Wang, Lingzhi; Hu, Maokai; Wang, Lifan; … Uddin, Syed A. et al. · Nature Astronomy 25 24 4%
2024 1991T-like Supernovae Phillips, M. M.; Ashall, C.; Brown, Peter J.; … Uddin, Syed A. et al. · The Astrophysical Journal Supplement Series 22 4 8%
2023 Near-infrared and Optical Nebular-phase Spectra of Type Ia Supernovae SN 2013aa and SN 2017cbv in NGC 5643 Kumar, Sahana; Hsiao, Eric Y.; Ashall, C.; … Uddin, S. A. et al. · The Astrophysical Journal 11 14 4%
2022 Dark Energy Survey Year 3 results: A 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835 Abbott, T. M. C.; Aguena, M.; Allam, S.; … Uddin, S. A. et al. · Physical Review D 110 140 1%
2022 Carnegie Supernova Project-II: Near-infrared Spectroscopy of Stripped-envelope Core-collapse Supernovae Shahbandeh, M.; Hsiao, E. Y.; Ashall, C.; … Uddin, S. A. et al. · The Astrophysical Journal 59 74 3%
2022 The Absolute Magnitudes of 1991T-like Supernovae Phillips, M. M.; Ashall, C.; Burns, Christopher R.; … Uddin, Syed A. et al. · The Astrophysical Journal 23 34 9%
2022 Testing the homogeneity of type Ia Supernovae in near-infrared for accurate distance estimations Müller-Bravo, T. E.; Galbany, L.; Karamehmetoglu, E.; … Uddin, S. A. et al. · Astronomy and Astrophysics 11 19 5%
2021 The effect of environment on Type Ia supernovae in the Dark Energy Survey three-year cosmological sample Kelsey, L.; Sullivan, M.; Smith, M.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 88 103 1%
2020 OzDES multi-object fibre spectroscopy for the Dark Energy Survey: results and second data release Lidman, C.; Tucker, B. E.; Davis, T. M.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 98 137 23%
2020 The Carnegie Supernova Project-I: Correlation between Type Ia Supernovae and Their Host Galaxies from Optical to Near-infrared Bands Uddin, Syed A.; Burns, Christopher R.; Phillips, M. M. et al. · The Astrophysical Journal 75 88 90%
2020 Exoplanets in the Antarctic Sky. III. Stellar Flares Found by AST3-II (CHESPA) within the Southern CVZ of TESS Liang, En-Si; Zhang, Hui; Yu, Zhouyi; … Uddin, Syed A. et al. · The Astronomical Journal 4 6 2%
2020 Exoplanets in the Antarctic Sky. IV. Dual-band Photometry of Variables Found by the CSTAR-II Commissioning Survey at the North Sky Zhu, Jiapeng; Zhang, Hui; Liang, En-Si; … Uddin, Syed A. et al. · The Astronomical Journal 3 3 3%
2019 First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters Abbott, T. M. C.; Allam, S.; Andersen, P.; … Uddin, S. A. et al. · The Astrophysical Journal 306 378 1%
2019 First cosmological results using Type Ia supernovae from the Dark Energy Survey: measurement of the Hubble constant Macaulay, E.; Nichol, R. C.; Bacon, D.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 236 316 1%
2019 First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation Brout, D.; Scolnic, D.; Kessler, R.; … Uddin, S. A. et al. · The Astrophysical Journal 147 187 1%
2019 Carnegie Supernova Project-II: Extending the Near-infrared Hubble Diagram for Type Ia Supernovae to z ∼ 0.1 Phillips, M. M.; Contreras, Carlos; Hsiao, E. Y.; … Uddin, Syed A. et al. · Publications of the Astronomical Society of the Pacific 93 123 2%
2019 First cosmology results using Type Ia supernova from the Dark Energy Survey: simulations to correct supernova distance biases Kessler, R.; Brout, D.; D'Andrea, C. B.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 91 122 1%
2019 Exoplanets in the Antarctic Sky. II. 116 Transiting Exoplanet Candidates Found by AST3-II (CHESPA) within the Southern CVZ of TESS Zhang, Hui; Yu, Zhouyi; Liang, Ensi; … Uddin, Syed A. et al. · The Astrophysical Journal Supplement Series 19 10 2%
2019 Exoplanets in the Antarctic Sky. I. The First Data Release of AST3-II (CHESPA) and New Found Variables within the Southern CVZ of TESS Zhang, Hui; Yu, Zhouyi; Liang, Ensi; … Uddin, Syed A. et al. · The Astrophysical Journal Supplement Series 14 3 2%
2018 Dark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxies Hoyle, B.; Gruen, D.; Bernstein, G. M.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 190 275 1%
2018 Rapidly evolving transients in the Dark Energy Survey Pursiainen, M.; Childress, M.; Smith, M.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 156 214 1%
2018 Dark Energy Survey year 1 results: Galaxy clustering for combined probes Elvin-Poole, J.; Crocce, M.; Ross, A. J.; … Uddin, S. A. et al. · Physical Review D 148 214 1%
2018 Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization Gatti, M.; Vielzeuf, P.; Davis, C.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 86 117 1%
2017 OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release Childress, M. J.; Lidman, C.; Davis, T. M.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 99 151 1%
2017 Optical observations of LIGO source GW 170817 by the Antarctic Survey Telescopes at Dome A, Antarctica Hu, Lei; Wu, Xuefeng; Andreoni, Igor; … Udden [sic], Syed A. et al. · Science Bulletin 93 147 3%
2017 The Influence of Host Galaxies in Type Ia Supernova Cosmology Uddin, Syed A.; Mould, Jeremy; Lidman, Chris et al. · The Astrophysical Journal 48 59 90%
2017 Average Spectral Properties of Type Ia Supernova Host Galaxies Uddin, Syed A.; Mould, Jeremy; Wang, Lifan · The Astrophysical Journal 9 12 90%
2017 Cosmological Inference from Host-Selected Type Ia Supernova Samples Uddin, Syed A.; Mould, Jeremy; Lidman, Chris et al. · Publications of the Astronomical Society of Australia 8 8 90%
2017 IC 630: Piercing the Veil of the Nuclear Gas Durré, Mark; Mould, Jeremy; Schartmann, Marc; … Ashraf Uddin, Syed et al. · The Astrophysical Journal 3 4 23%
2016 Host Galaxy Identification for Supernova Surveys Gupta, Ravi R.; Kuhlmann, Steve; Kovacs, Eve; … Uddin, Syed et al. · The Astronomical Journal 103 152 2%
2015 OzDES multifibre spectroscopy for the Dark Energy Survey: first-year operation and results Yuan, Fang; Lidman, C.; Davis, T. M.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 105 164 1%
2014 Photometric redshift analysis in the Dark Energy Survey Science Verification data Sánchez, C.; Carrasco Kind, M.; Lin, H.; … Uddin, S. A. et al. · Monthly Notices of the Royal Astronomical Society 178 276 1%
2014 Constraining a Possible Variation of G with Type Ia Supernovae Mould, Jeremy; Uddin, Syed A. · Publications of the Astronomical Society of Australia 36 66 45%
2013 Mapping the Spiral Structure of the Milky Way Galaxy at 21cm Wavelength Using the SALSA Radio Telescope of Onsala Space Observatory Santo, Tanjila Rahman; Uddin, Syed Ashraf · International Journal of Astronomy — 11 45%