I am the Professor of Astrostatistics and Data Science at the University of Cambridge. I hold this interdisciplinary faculty position jointly at the Statistical Laboratory of the Department of Pure Mathematics and Mathematical Statistics, and at the Institute of Astronomy. As of 2024, I am Past Chair of the Astrostatistics Interest Group of the American Statistical Association and a Turing Fellow Alumnus of The Alan Turing Institute. My research interests lie at the intersections of astrophysics, cosmology, statistics, and machine learning.
Research Interests: Astrostatistics and astroinformatics, Applications in time-domain astronomy and cosmology, Bayesian modeling and inference, Statistical computation
Publications
TYPE Ia SUPERNOVA COLORS AND EJECTA VELOCITIES: HIERARCHICAL BAYESIAN REGRESSION WITH NON-GAUSSIAN DISTRIBUTIONS
– The Astrophysical Journal
(2014)
797,
75
(doi: 10.1088/0004-637X/797/2/75)
Evidence for grain growth in molecular clouds: A Bayesian examination of the extinction law in Perseus
– Monthly Notices of the Royal Astronomical Society
(2012)
428,
1606
(doi: 10.1093/mnras/sts144)
Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae
– Monthly Notices of the Royal Astronomical Society
(2012)
425,
1789
THE SPECTROSCOPIC DIVERSITY OF TYPE Ia SUPERNOVAE**Based in part on observations obtained at the F. L. Whipple Observatory, which is operated by the Smithsonian Astrophysical Observatory, the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona, and with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile.
– The Astronomical Journal
(2012)
143,
126
(doi: 10.1088/0004-6256/143/5/126)
Confronting 2D delayed-detonation models with light curves and spectra of Type Ia supernovae
– Monthly Notices of the Royal Astronomical Society
(2011)
417,
1280
TYPE Ia SUPERNOVA LIGHT CURVE INFERENCE: HIERARCHICAL MODELS IN THE OPTICAL AND NEAR-INFRARED
– The Astrophysical Journal
(2011)
731,
120
(doi: 10.1088/0004-637X/731/2/120)
Do spectra improve distance measurements of Type Ia supernovae?
– Astronomy & Astrophysics
(2010)
526,
A81
(doi: 10.1051/0004-6361/201015792)
HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST GALAXY MASSES
– Astrophysical Journal
(2010)
715,
743
(doi: 10.1088/0004-637X/715/2/743)
TYPE Ia SUPERNOVA LIGHT-CURVE INFERENCE: HIERARCHICAL BAYESIAN ANALYSIS IN THE NEAR-INFRARED
– The Astrophysical Journal
(2009)
704,
629
(doi: 10.1088/0004-637X/704/1/629)
TYPE Ia SUPERNOVAE ARE GOOD STANDARD CANDLES IN THE NEAR INFRARED: EVIDENCE FROM PAIRITEL
– The Astrophysical Journal
(2008)
689,
377
(doi: 10.1086/592374)
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