TY - JOUR
T1 - Dark energy imprints on the kinematic Sunyaev-Zel'dovich signal
AU - Ma, Yin-Zhe
AU - Zhao, Gong-Bo
PY - 2014/7/30
Y1 - 2014/7/30
N2 - We investigate the imprint of dark energy on the kinetic Sunyaev–Zel'dovich (kSZ) angular power spectrum on scales of to l = 1000 to 10,000, and find that the kSZ signal is sensitive to the dark energy parameter. For example, varying the constant w by 20% around w = -1 results in a ≳10% change on the kSZ spectrum; changing the dark energy dynamics parametrized by w a by ±0.5, a 30% change on the kSZ spectrum is expected. We discuss the observational aspects and develop a fitting formula for the kSZ power spectrum. Finally, we discuss how the precise modeling of the post-reionization signal would help the constraints on patchy reionization signal, which is crucial for measuring the duration of reionization.
AB - We investigate the imprint of dark energy on the kinetic Sunyaev–Zel'dovich (kSZ) angular power spectrum on scales of to l = 1000 to 10,000, and find that the kSZ signal is sensitive to the dark energy parameter. For example, varying the constant w by 20% around w = -1 results in a ≳10% change on the kSZ spectrum; changing the dark energy dynamics parametrized by w a by ±0.5, a 30% change on the kSZ spectrum is expected. We discuss the observational aspects and develop a fitting formula for the kSZ power spectrum. Finally, we discuss how the precise modeling of the post-reionization signal would help the constraints on patchy reionization signal, which is crucial for measuring the duration of reionization.
U2 - 10.1016/j.physletb.2014.06.066
DO - 10.1016/j.physletb.2014.06.066
M3 - Article
SN - 0370-2693
VL - 735
SP - 402
EP - 411
JO - Physical Letters B
JF - Physical Letters B
ER -