Journal
PHYSICAL REVIEW D
Volume 98, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.98.123521
Keywords
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Funding
- World Premier International Research Center (WPI) Initiative, Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Japan Society for the Promotion of Science (JSPS) [JP15H03654, JP15H05887, JP15H05893, JP15K21733]
- National Aeronautics and Space Administration (NASA) through Einstein Postdoctoral Fellowship [PF7-180167]
- JSPS KAKENHI [17K14273]
- Japan Science and Technology Agency (JST) Core Research for Evolutional Science and Technology (CREST) [JPMJCR1414]
- National Science Foundation (NSF) Graduate Research Fellowships Program (GRFP) [DGE-1746045]
- International Research Fellowship of JSPS
- U.S. Department of Energy (DOE) [DE-AC02-06CH11357]
- Office of Science of the U.S. DOE [DE-AC02-05CH11231]
- Graduate Research Opportunities Worldwide
- Grants-in-Aid for Scientific Research [17K14273] Funding Source: KAKEN
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The galaxy bispectrum, measuring excess clustering of galaxy triplets, offers a probe of dark energy via baryon acoustic oscillations (BAOs). However up to now it has been severely underused due to the combinatorically explosive number of triangles. Here we exploit interference in the bispectrum to identify triangles that amplify BAOs. This approach reduces the computational cost of estimating covariance matrices, offers an improvement in BAO constraints equivalent to lengthening BOSS by 30% and simplifies adding bispectrum BAO information to future large-scale redshift survey analyses.
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