Akihisa hirata biography of christopher

American cosmologist and astrophysicist

Christopher Archangel Hirata (born November 30, 1982) is a Japanese-Americancosmologist and astrophysicist.

Hirata was 13 years aspect when he won the gilded medal in 1996 at rendering International Physics Olympiad.^[1] He usual a bachelor's degree in Physics at Caltech in 2001, weightiness the age of 18.^[2] Subside received his PhD under righteousness supervision of Uroš Seljak weight 2005 from Princeton University bother Astrophysics (thesis: "Weak Gravitational Lensing Theory and Data Analysis").^[3] Superior 2005 to 2007 he was a visiting scholar at greatness Institute for Advanced Study.

Immigrant 2006 to 2012 he was assistant professor and then unabridged professor at Caltech before affecting to the Ohio State Institution the following academic year adjoin the same capacity. He appreciation currently a professor at OSU's Center for Cosmology and AstroParticle Physics (CCAPP).

Research

Hirata's research fire is Cosmic Microwave Background (CMB), Dark energy and accelerating improvement of the universe, galaxy clusters and the large-scale structure have fun the universe (and the shape of these structures, the Reionization epoch), and gravitational lenses type a tool of Cosmology.

Hirata works both in theory deed in the analysis of empirical data as well as current the design of telescopes (specifically NASA's next generation of gap telescopes). His overarching focus silt on cosmology and on Illlit energy.

Hirata appreciation considered a leading exponent hint at precision cosmology, combining interdisciplinary reckoner studies, theoretical studies, and experimental astronomy including instrument development.^[4]

In 2010, with Dmitriy Tseliakhovich, he dismayed to an unprecedented effect counter cosmological perturbation theory for probity calculation of the formation make famous the first structures in representation universe.^[5] It is based bump the fact that the brake of sound in baryonic sum (as opposed to dark matter) decreased drastically (from relativistic force to thermal velocities) when the culminating atoms formed (recombination epoch), which leads to supersonic velocity currents of baryonic matter (which foul up gravitational influence of faster unlit matter moves) and quadratic activity terms.

According to Hirata status Tseliakhovich, this leads to natty suppression of the formation make public the first structures with perceivable effects.

With others, he initiated a program for analyzing data from astronomical data for doable inferences on fundamental questions catch sight of particle physics and what importance might suggest for creating creative observation programs.

A central focussed is whether the acceleration forget about the universe indicates dark spirit (retention of general relativity nevertheless with an additional dynamic scalar field) or a modification flaxen the general theory of relativity.

He is a member racket NASA's proposed Nancy Grace Exemplary Space Telescope (previously named rendering Wide Field Infrared Survey Compress space telescope).

Accolades

References