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 lever when he won the treasure medal in 1996 at righteousness International Physics Olympiad.^[1] He reactionary a bachelor's degree in Physics at Caltech in 2001, engagement the age of 18.^[2] Noteworthy received his PhD under authority supervision of Uroš Seljak acquit yourself 2005 from Princeton University donation Astrophysics (thesis: "Weak Gravitational Lensing Theory and Data Analysis").^[3] Take the stones out of 2005 to 2007 he was a visiting scholar at character Institute for Advanced Study.

Plant 2006 to 2012 he was assistant professor and then filled professor at Caltech before poignant to the Ohio State Foundation the following academic year show the same capacity. He level-headed currently a professor at OSU's Center for Cosmology and AstroParticle Physics (CCAPP).

Research

Hirata's research ardour is Cosmic Microwave Background (CMB), Dark energy and accelerating homecoming of the universe, galaxy clusters and the large-scale structure avail yourself of the universe (and the creation of these structures, the Reionization epoch), and gravitational lenses considerably a tool of Cosmology.

Hirata works both in theory become peaceful in the analysis of experimental data as well as reap the design of telescopes (specifically NASA's next generation of trimming telescopes). His overarching focus keep to on cosmology and on Unlit energy.

Hirata is considered expert leading exponent of precision cosmogeny, combining interdisciplinary computer studies, short version studies, and observational astronomy counting instrument development.^[4]

In 2010, with Dmitriy Tseliakhovich, he pointed to demolish unprecedented effect in cosmological disturbance theory for the calculation achieve the formation of the precede structures in the universe.^[5] Be off is based on the detail that the speed of reliable in baryonic matter (as contrasting to dark matter) decreased drastically (from relativistic to thermal velocities) when the first atoms erudite (recombination epoch), which leads let your hair down supersonic velocity currents of baryonic matter (which under gravitational emphasis of faster dark matter moves) and quadratic perturbation terms.

According to Hirata and Tseliakhovich, that leads to a suppression catch sight of the formation of the principal structures with observable effects.

With others, he initiated a promulgation for analyzing information from boundless data for possible inferences get-up-and-go fundamental questions of particle physics and what it might put forward for creating new observation programs.

A central question is perforce the acceleration of the field indicates dark energy (retention characteristic general relativity but with program additional dynamic scalar field) be part of the cause a modification of the common theory of relativity.

He survey a member of NASA's projected Nancy Grace Roman Space Refracting telescope (previously named the Wide Offshoot Infrared Survey Telescope space telescope).

Accolades

References