Results 111 to 120 of about 15,151 (218)

Cosmic microwave background, where next?

, 2009
After the fundamental contribution of Cosmic Microwave Background observations to define what is now known as the standard cosmological model, what lies ahead for the field?
Licia Verde
core  

Cosmic microwave background probes models of inflation

, 1992
Inflation creates both scalar (density) and tensor (gravity wave) metric perturbations. We find that the tensor-mode contribution to the cosmic microwave background anisotropy on large-angular scales can only exceed that of the scalar mode in models ...
Turner, Michael S., Davis, Richard L., Hodges, Hardy M., Steinhardt, Paul J., Smoot, George F.   +4 more
core   +1 more source

Revisiting the A L Lensing Anomaly in Planck 2018 Temperature Data

The Astrophysical Journal
We revisit the lensing anomaly in the Planck 2018 temperature (TT) data and examine its robustness to frequency selection and additional sky masking. Our main findings are as follows.
Graeme E. Addison, Charles L. Bennett, Mark Halpern, Gary Hinshaw, Janet L. Weiland   +4 more
doaj   +1 more source

Beyond Optical Depth: Future Determination of Ionization History from the Cosmic Microwave Background. [PDF]

Astrophys J, 2020
Watts DJ, Addison GE, Bennett CL, Weiland JL.   +3 more
europepmc   +1 more source

Applications of cosmological perturbation theory

, 2011
PhDCosmological perturbation theory is crucial for our understanding of the universe. The linear theory has been well understood for some time, however developing and applying the theory beyond linear order is currently at the forefront of research in
Christopherson, Adam J.
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Illuminating the background : topics in cosmic microwave background polarization research [PDF]

, 2012
The cosmic microwave background provides a wealth of information about the origin and history of the universe. The statistics of the anisotropy and the polarization of the cosmic microwave background, among other things, can tell us about the ...
Miller, Nathan James
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Combining cosmic microwave background datasets with consistent foreground modelling

Astronomy & Astrophysics
We present a joint cosmological analysis combining data from the Planck satellite, the Atacama Cosmology Telescope, and the South Pole Telescope. We construct a unified likelihood that reproduces the measured temperature and polarisation power spectra by
Tristram M., Douspis M., Gorce A., Henrot-Versillé S., Hergt L. T., Ilic S., McBride L., Muñoz-Echeverría M., Pointecouteau E., Salvati L.   +9 more
doaj   +1 more source

Component separation methods for CMB data [PDF]

, 2010
Measurements of the Cosmic Microwave Background (CMB) emission with increasingly high resolution and sensitivity are now becoming available, and even higher quality data are expected from the ongoing Planck mission and future experiments.
Bottino, Maria-Paola, Bottino, M.
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A cosmic microwave background feature consistent with a cosmic texture

, 2007
The Cosmic Microwave Background provides our most ancient image of the universe and our best tool for studying its early evolution. Theories of high-energy physics predict the formation of various types of topological defects in the very early universe ...
Martínez-González, Enrique, Hobson, M. P., Turok, N., Vielva, Patricio, Cruz, Marcos   +4 more
core   +1 more source

Cosmic necklaces in string theory and field theory

, 2010
PhDIn this thesis we investigate astrophysical phenomena which arise in models with compact extra dimensions, focussing on the cosmological consequences of strings which wrap cycles in the internal space. Embedding our strings in the Klebanov-Strassler
Lake, Matthew James
core