Limits on primordial black holes from $\mu$ distortions in cosmic microwave background [PDF]
, 2017 If primordial black holes (PBHs) form directly from inhomogeneities in the early universe, then the number in the mass range $10^6 -10^9M_{\odot}$ is severely constrained by upper limits to the $\mu$-distortion in the cosmic microwave background (CMB ...
T. Nakama, B. Carr, J. Silk
semanticscholar +1 more source
POLAR: Instrument and Results [PDF]
, 2002 We describe the design, performance, and results of a polarimeter used to make precision measurements of the 2.7 K cosmic microwave background. In the Spring of 2000 the instrument searched for polarized emission in three microwave frequency bands ...
de Oliveira-Costa, Angelica +6 more
core +1 more source
Primordial Non-Gaussianity in the Cosmic Microwave Background
Advances in Astronomy, 2010 In the last few decades, advances in observational cosmology have given us a standard model of cosmology. We know the content of the universe to within a few percent.
Amit P. S. Yadav, Benjamin D. Wandelt
doaj +1 more source
Complex Visibilities of Cosmic Microwave Background Anisotropies [PDF]
, 2000 We study the complex visibilities of the cosmic microwave background anisotropies that are observables in interferometric observations of the cosmic microwave background, using the multipole expansion methods commonly adopted in analyzing single-dish ...
A. E. Lange +27 more
core +3 more sources
Prospects for Measuring Cosmic Microwave Background Spectral Distortions in the Presence of Foregrounds [PDF]
, 2017 Measurements of cosmic microwave background spectral distortions have profound implications for our understanding of physical processes taking place over a vast window in cosmological history.
M. Abitbol +3 more
semanticscholar +1 more source
Delensing of Cosmic Microwave Background Polarization with Machine Learning
The Astrophysical Journal Supplement Series, 2023 Primordial B -mode detection is one of the main goals of next-generation cosmic microwave background (CMB) experiments. Primordial B -modes are a unique signature of primordial gravitational waves (PGWs).
Ye-Peng Yan +3 more
doaj +1 more source
Kolmogorov cosmic microwave background sky
, 2009 A new map of the sky representing the degree of randomness in the cosmic microwave background (CMB) temperature has been obtained. The map based on estimation of the Kolmogorov stochasticity parameter clearly distinguishes the contribution of the ...
A. A. Kocharyan +26 more
core +1 more source
Non-Gaussianity and the Cosmic Microwave Background Anisotropies
Advances in Astronomy, 2010 We review in a pedagogical way the present status of the impact of non-Gaussianity (NG) on the cosmic microwave background (CMB) anisotropies. We first show how to set the initial conditions at second order for the CMB anisotropies when some primordial ...
N. Bartolo, S. Matarrese, A. Riotto
doaj +1 more source
Recovering Cosmic Microwave Background Polarization Signals with Machine Learning
The Astrophysical Journal, 2023 Primordial B-mode detection is one of the main goals of current and future cosmic microwave background (CMB) experiments. However, the weak B-mode signal is overshadowed by several Galactic polarized emissions, such as thermal dust emission and ...
Ye-Peng Yan +3 more
doaj +1 more source
Relieving the tension between weak lensing and cosmic microwave background with interacting dark matter and dark energy models [PDF]
, 2017 We constrain interacting dark matter and dark energy (IDMDE) models using a 450-degree-square cosmic shear data from the Kilo Degree Survey (KiDS) and the angular power spectra from Planck's latest cosmic microwave background measurements. We revisit the
Rui An, C. Feng, Bin Wang
semanticscholar +1 more source