New horizons in cosmology with spectral distortions of the cosmic microwave background [PDF]
Experimental astronomy (Print), 2019 This Voyage 2050 paper highlights the unique science opportunities using spectral distortions of the cosmic microwave background (CMB). CMB spectral distortions probe many processes throughout the history of the Universe, delivering novel information ...
J. Chluba +29 more
semanticscholar +1 more source
The Cosmic Microwave Background Spectrum from the Full COBE FIRAS Data Set [PDF]
, 1996 We have refined the analysis of the data from the FIRAS (Far-InfraRed Absolute Spectrophotometer) on board the COBE (COsmic Background Explorer). The FIRAS measures the difference between the cosmic microwave background and a precise blackbody spectrum ...
D. Fixsen +5 more
semanticscholar +1 more source
A Line of sight integration approach to cosmic microwave background anisotropies [PDF]
, 1996 We present a new method for calculating linear cosmic microwave background (CMB) anisotropy spectra based on integration over sources along the photon past light cone.
U. Seljak, M. Zaldarriaga
semanticscholar +1 more source
Cosmic microwave background bounds on primordial black holes including dark matter halo accretion [PDF]
, 2020 Even if massive ($10\,M_\odot \lesssim M \lesssim 10^4 M_\odot$) primordial black holes (PBHs) can only account for a small fraction of the dark matter (DM) in the universe, they may still be responsible for a sizable fraction of the coalescence events ...
P. Serpico +3 more
semanticscholar +1 more source
Frequency–Redshift Relation of the Cosmic Microwave Background
Astronomy, 2023 We point out that a modified temperature–redshift relation (T-z relation) of the cosmic microwave background (CMB) cannot be deduced by any observational method that appeals to an a priori thermalisation to the CMB temperature T of the excited states in ...
Ralf Hofmann, Janning Meinert
doaj +1 more source
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg2 of SPTpol Temperature and Polarization Data [PDF]
Astrophysical Journal, 2019 We present a measurement of the cosmic microwave background lensing potential using 500 deg2 of 150 GHz data from the SPTpol receiver on the South Pole Telescope.
W. L. K. Wu +70 more
semanticscholar +1 more source
Measurements of B -mode polarization of the cosmic microwave background from 500 square degrees of SPTpol data [PDF]
Physical Review D, 2019 We report a B-mode power spectrum measurement from the cosmic microwave background (CMB) polarization anisotropy observations made using the SPTpol instrument on the South Pole Telescope.
J. Sayre +81 more
semanticscholar +1 more source
Photonic Integrated Circuits for Microwave Astronomy
Inventions, 2023 One of the main objectives of cosmology is the measurement of the Cosmic Microwave Background (CMB) polarization and, in particular, the so-called B-modes, which could demonstrate the existence of the primordial gravitational waves generated at the early
Guillermo Pascual-Cisneros +2 more
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Room for New Physics in the Rayleigh-Jeans Tail of the Cosmic Microwave Background. [PDF]
Physical Review Letters, 2018 We show that, despite stringent constraints on the shape of the main part of the cosmic microwave background (CMB) spectrum, there is considerable room for its modification within its Rayleigh-Jeans (RJ) end, ω≪T_{CMB}.
M. Pospelov +3 more
semanticscholar +1 more source
Cosmic birefringence fluctuations and cosmic microwave background B-mode polarization
Physics Letters B, 2015 Recently, BICEP2 measurements of the cosmic microwave background (CMB) B-mode polarization has indicated the presence of primordial gravitational waves at degree angular scales, inferring the tensor-to-scalar ratio of r=0.2 and a running scalar spectral ...
Seokcheon Lee, Guo-Chin Liu, Kin-Wang Ng
doaj +1 more source