1 code implementation • 28 Jan 2021 • Abhishek S. Maniyar, Yacine Ali-Haïmoud, Julien Carron, Antony Lewis, Mathew S. Madhavacheril
In particular, we show that the Hu-Okamoto (HO02) estimator is not the absolute optimal lensing estimator that can be constructed out of quadratic combinations of $T, E$ and $B$ fields.
Cosmology and Nongalactic Astrophysics
no code implementations • 11 Jan 2021 • Yacine Ali-Haïmoud
As a consequence, we derive tighter upper bounds to the DM-SM elastic-scattering cross section for DM masses $m_\chi \lesssim 0. 1$ MeV, from the non-detection of $\mu$-distortions by FIRAS.
Cosmology and Nongalactic Astrophysics
1 code implementation • 28 Jul 2020 • Nanoom Lee, Yacine Ali-Haïmoud
We present the new recombination code HYREC-2, holding the same accuracy as the state-of-the-art codes HYREC and COSMOREC and, at the same time, surpassing the computational speed of the code RECFAST commonly used for CMB-anisotropy data analyses.
Cosmology and Nongalactic Astrophysics
no code implementations • 17 Dec 2013 • Yacine Ali-Haïmoud, P. Daniel Meerburg, Sihan Yuan
This relative velocity suppresses the growth of matter fluctuations on scales $k \sim 10-10^3$ Mpc$^{-1}$.
Cosmology and Nongalactic Astrophysics
