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pro vyhledávání: '"MICROWAVE BACKGROUND DATA"'
The measurements of the temperature and polarisation anisotropies of the Cosmic Microwave Background (CMB) by the ESA Planck mission have strongly supported the current concordance model of cosmology. However, the latest cosmological data release fro
Externí odkaz:
http://arxiv.org/abs/2410.05209
Autor:
Balkenhol, L., Reichardt, C. L.
Empirical estimates of the band power covariance matrix are commonly used in cosmic microwave background (CMB) power spectrum analyses. While this approach easily captures correlations in the data, noise in the resulting covariance estimate can syste
Externí odkaz:
http://arxiv.org/abs/2110.03180
Publikováno v:
A&A 638, A73 (2020)
Component separation is one of the key stages of any modern, cosmic microwave background (CMB) data analysis pipeline. It is an inherently non-linear procedure and typically involves a series of sequential solutions of linear systems with similar, al
Externí odkaz:
http://arxiv.org/abs/2002.02833
Autor:
Addison, G. E., Essinger-Hileman, T. M., Greason, M. R., Griswold, T. B., Jaffe, T., Miller, N., Prasad, U., Weiland, J. L.
This is an overview of the data products and other resources available through NASA's LAMBDA site https://lambda.gsfc.nasa.gov/. An up-to-date version of this document, along with code tools actively maintained and developed by LAMBDA staff, can be f
Externí odkaz:
http://arxiv.org/abs/1905.08667
Autor:
Puglisi, Giuseppe, Poletti, Davide, Fabbian, Giulio, Baccigalupi, Carlo, Heltai, Luca, Stompor, Radek
Publikováno v:
A&A 618, A62 (2018)
An estimation of the sky signal from streams of Time Ordered Data (TOD) acquired by Cosmic Microwave Background (\cmb) experiments is one of the most important steps in the context of \cmb data analysis referred to as the map-making problem. The cont
Externí odkaz:
http://arxiv.org/abs/1801.08937
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Autor:
Moodley, Darell, Moodley, Kavilan
We optimise the parameters of the Population Monte Carlo algorithm using numerical simulations. The optimisation is based on an efficiency statistic related to the number of samples evaluated prior to convergence, and is applied to a D-dimensional Ga
Externí odkaz:
http://arxiv.org/abs/1510.01486
Autor:
Rassat, A., Starck, J. -L.
There is currently a debate over the existence of claimed statistical anomalies in the cosmic microwave background (CMB), recently confirmed in Planck data. Recent work has focussed on methods for measuring statistical significance, on masks and on s
Externí odkaz:
http://arxiv.org/abs/1303.5051
Publikováno v:
JCAP 12(2011)021
We present a significant update of the constraints on the Abelian Higgs cosmic string tension by cosmic microwave background (CMB) data, enabled both by the use of new high-resolution CMB data from suborbital experiments as well as the latest results
Externí odkaz:
http://arxiv.org/abs/1108.2730
Autor:
Wei, Hao
Publikováno v:
JCAP 1104:022,2011
Recently, in a series of works by Liu and Li (L&L), they claimed that there exists a timing asynchrony of $-25.6\,$ms between the spacecraft attitude and radiometer output timestamps in the original raw WMAP time-ordered data (TOD). L&L reprocessed t
Externí odkaz:
http://arxiv.org/abs/1012.0883