A Ruler To Measure The Universe : Probing Dark Energy with Baryon Acoustic Oscillations
Understanding the nature of the dark energy that is responsible for roughly 70% of the energy content of the Universe and is causing the accelerated expansion of the Universe is one of the foremost problems in cosmology today. This grant supported the development of the Baryon Acoustic Oscillation (BAO) technique to measure the expansion rate of the Universe and thereby constrain the properties of the dark energy. The primary achievement over the course of the grant was the development of the reconstruction technique for BAO which enhances the constraining power of this method. At the start of this grant, this reconstruction technique, although theoretically studied, had not been applied to data. The work supported by this grant helped make reconstruction a standard technique in the analysis of BAO data. This grant also supported analyses using the Baryon Oscillation Spectroscopic Survey (BOSS, supported by DOE), as well as theoretical work in preparation for the next generations of surveys, most notably the Dark Energy Spectroscopic Instrument (DESI).
- Research Organization:
- Yale Univ., New Haven, CT (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- SC0008080
- OSTI ID:
- 1543148
- Report Number(s):
- DOE-YALE-8080
- Country of Publication:
- United States
- Language:
- English
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