29 papers
CMB Spectral Distortion Anisotropies from Acoustic Damping with primordial non-Gaussianity
Jens Chluba, Atsuhisa Ota, Nicola Bartolo
In this paper, we evaluate the precise distortion source and transfer functions caused by mixing of blackbodies of different temperatures using the recently developed frequency hie…
Simplified treatment of kinematic corrections to the SZ effect using the boost operator approach
Alex Hoey, Jacob Long, Jens Chluba
The Sunyaev-Zeldovich (SZ) effects provide a potent cosmological probe of the large-scale structure in the universe. Here, we present a simplified derivation of the kinematic corre…
Neutrino-electron scattering kernels in isotropic media
Jens Chluba, Bryce Cyr, Michiru Uwabo-Niibo +1
In the early universe, neutrinos undergo many interactions with the particles in the plasma. Key processes are the scattering of neutrinos by free electrons and positrons. In this…
Spectral distortion anisotropies from photon to dark photon conversions
Sara Evangelista, Jens Chluba, Bryce Cyr
Dark photons are a gauge boson of a hypothetical dark sector, representing one of the most-studied minimal extensions of the Standard Model, with wide-ranging theoretical and obser…
Self-consistent secondary cosmic microwave background anisotropies and extragalactic foregrounds in the FLAMINGO simulations
Tianyi Yang, Ian G. McCarthy, Fiona McCarthy +6
Secondary anisotropies in the cosmic microwave background (CMB) contain information that can be used to test both cosmological models and models of galaxy formation. Starting from…
Derivation of the Kompaneets equation using the boost operator approach
Alex Hoey, Jacob Long, Jens Chluba
The repeated scattering of photons by thermal electrons at low temperatures is described by the Kompaneets equation and its generalized forms that include anisotropies and higher o…