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Matias Zaldarriaga is an Argentinean cosmologist.

Matias Zaldarriaga
ResidenceUnited States
Known forCMBFAST code
AwardsMacArthur Fellows Program
Helen B. Warner Prize for Astronomy (2003)
Gribov Medal
Scientific career
InstitutionsInstitute for Advanced Study



Born in Coghlan neighbourhood, Buenos Aires, at the present time he works in the Institute for Advanced Study located in Princeton, New Jersey, United States. He is known especially for his work on the cosmic microwave background (CMB). Together with Uros Seljak, he developed the CMBFAST code, the first computationally efficient method for computing the anisotropy of the CMB for an arbitrary set of cosmological parameters. In 2018, he was elected a member of the National Academy of Sciences.


In 2003, he was awarded the Helen B. Warner Prize for Astronomy by the American Astronomical Society, and in 2005 he won the Gribov Medal of the European Physical Society. In 2006, he was the recipient of a MacArthur Fellowship.[1]


  1. ^ Felicia Lee (2006-09-19). "This Year's MacArthur Awards Cover Many Fields". New York Times.

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