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
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Observing Dirac neutrinos in the cosmic microwave background [PDF]
Physical Review D, 2019 Planned CMB Stage IV experiments have the potential to measure the effective number of relativistic degrees of freedom in the early Universe, $N_\text{eff}$, with percent-level accuracy.
K. Abazajian, J. Heeck
semanticscholar +1 more source
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
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Heating of the intergalactic medium by the cosmic microwave background during cosmic dawn [PDF]
Physical Review D, 2018 The intergalactic medium is expected to be at its coldest point before the formation of the first stars in the universe. Motivated by recent results from the EDGES experiment, we revisit the standard calculation of the kinetic temperature of the neutral ...
T. Venumadhav +3 more
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Magneto-optic effects of the cosmic microwave background
Nuclear Physics B, 2018 Generation of magneto-optic effects by the interaction of the CMB with cosmic magnetic fields is studied. Effects which generate polarization such as the Cotton–Mouton effect, vacuum polarization and photon–pseudoscalar mixing in external magnetic field ...
Damian Ejlli
doaj +1 more source
Cosmic microwave background limits on accreting primordial black holes [PDF]
, 2016 Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO’s first direct detection of a binary-black-hole merger.
Y. Ali-Haimoud, M. Kamionkowski
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Foreground-Immune Cosmic Microwave Background Lensing with Shear-Only Reconstruction. [PDF]
Physical Review Letters, 2018 Cosmic microwave background (CMB) lensing from current and upcoming wide-field CMB experiments such as AdvACT, SPT-3G and Simons Observatory relies heavily on temperature (versus polarization).
E. Schaan, S. Ferraro
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Probing decoupling in dark sectors with the cosmic microwave background [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 The acoustic peaks in the angular power spectrum of cosmic microwave background (CMB) temperature and polarization anisotropies play an important role as a probe of the nature of new relativistic particles contributing to the radiation density in the ...
Gongjun Choi +2 more
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Comparing cosmic microwave background datasets [PDF]
Physical Review D, 1998 To extract reliable cosmic parameters from cosmic microwave background datasets, it is essential to show that the data are not contaminated by residual non-cosmological signals. We describe general statistical approaches to this problem, with an emphasis on the case in which there are two datasets that can be checked for consistency.
Knox, L. +4 more
openaire +2 more sources
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
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