Zobrazeno 1 - 10
of 649
pro vyhledávání: '"Sheean P"'
Wide-angle and relativistic corrections to the Newtonian and flat-sky approximations are important for accurate modelling of the galaxy power spectrum of next-generation galaxy surveys. In addition to Doppler and Sachs-Wolfe relativistic corrections,
Externí odkaz:
http://arxiv.org/abs/2412.06553
The fluctuations produced during cosmic inflation may exhibit non-Gaussian characteristics that are imprinted in the large-scale structure of the Universe. This non-Gaussian imprint is an ultra-large scale signal that can be detected using the power
Externí odkaz:
http://arxiv.org/abs/2409.19383
Autor:
Jolicoeur, Sheean, Guedezounme, Sêcloka L., Maartens, Roy, Paul, Pritha, Clarkson, Chris, Camera, Stefano
Publikováno v:
JCAP08(2024)027
Galaxy surveys contain information on the largest scales via wide-angle and relativistic contributions. By combining two different galaxy populations, we can suppress the strong cosmic variance on ultra-large scales and thus enhance the detectability
Externí odkaz:
http://arxiv.org/abs/2406.06274
Publikováno v:
EPJC 84 (2024) 491
The fluctuations generated by Inflation are nearly Gaussian in the simplest models, but may be non-Gaussian in more complex models, potentially leading to signatures in the late Universe. In particular, local type primordial non-Gaussianity induces s
Externí odkaz:
http://arxiv.org/abs/2312.12994
Publikováno v:
EPJC 84 (2024) 95
In the pursuit of understanding the large-scale structure of the Universe, the synergy between complementary cosmological surveys has proven to be a powerful tool. Using multiple tracers of the large-scale structure can significantly improve the cons
Externí odkaz:
http://arxiv.org/abs/2310.17959
Publikováno v:
EPJC 83 (2023) 320
Surveys of the matter distribution contain `fossil' information on possible non-Gaussianity that is generated in the primordial Universe. This primordial signal survives only on the largest scales where cosmic variance is strongest. By combining diff
Externí odkaz:
http://arxiv.org/abs/2301.02406
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-14 (2024)
Abstract The fluctuations generated by Inflation are nearly Gaussian in the simplest models, but may be non-Gaussian in more complex models, potentially leading to signatures in the late Universe. In particular, local-type primordial non-Gaussianity
Externí odkaz:
https://doaj.org/article/67da543c9cba4c60913b8235c7303f5c
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 1, Pp 1-11 (2024)
Abstract In the pursuit of understanding the large-scale structure of the Universe, the synergy between complementary cosmological surveys has proven to be a powerful tool. Using multiple tracers of the large-scale structure can significantly improve
Externí odkaz:
https://doaj.org/article/bd7d8327faaa424cbaad8c4ab77ddf0e
Autor:
Maartens, Roy, Fonseca, José, Camera, Stefano, Jolicoeur, Sheean, Viljoen, Jan-Albert, Clarkson, Chris
Publikováno v:
JCAP12(2021)009
Measurements of galaxy clustering in upcoming surveys such as those planned for the Euclid and Roman satellites, and the SKA Observatory, will be sensitive to distortions from lensing magnification and Doppler effects, beyond the standard redshift-sp
Externí odkaz:
http://arxiv.org/abs/2107.13401
Autor:
Lara Riem, Silvia S. Blemker, Olivia DuCharme, Elizabeth B. Leitch, Matthew Cousins, Ivan J. Antosh, Mikalyn Defoor, Andrew J. Sheean, Brian C. Werner
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract Objective analysis of rotator cuff (RC) atrophy and fatty infiltration (FI) from clinical MRI is limited by qualitative measures and variation in scapular coverage. The goals of this study were to: develop/evaluate a method to quantify RC mu
Externí odkaz:
https://doaj.org/article/9377da42baf548c78082d2806391ca4e