Results 131 to 140 of about 132,304 (298)

Angular Spectra for non-Gaussian Isotropic Fields [PDF]

open access: yes, 2013
Cosmic Microwave Background (CMB) Anisotropies is a subject of intensive research in several fields of sciences. In this paper we start a systematic development of basic notions and theory in statistics according to the application for CMB.
Terdik, Gyorgy
core  

Exploring cosmic origins with CORE: Extragalactic sources in cosmic microwave background maps [PDF]

open access: yes, 2016
We discuss the potential of a next generation space-borne Cosmic Microwave Background (CMB) experiment for studies of extragalactic sources. Our analysis has particular bearing on the definition of the future space project, CORE, that has been submitted ...
G. Zotti   +124 more
semanticscholar   +1 more source

Design of Waveguide NbN‐Based Superconductor–Insulator–Superconductor Mixer for 650 GHz

open access: yesAdvanced Photonics Research, Volume 6, Issue 7, July 2025.
This research work focuses on a waveguide NbN‐based superconductor–insulator–superconductor mixer operating at 650 GHz. The signal coupling circuit is designed using a waveguide‐microstrip coupling structure, and the return loss obtained is lower than −16 dB. For the mixing circuit, its return loss is less than −7.5 dB, and the return loss reduces with
Lianhao He, Fangting Lin, Xiaoyong He
wiley   +1 more source

Cosmic Microwave Background Polarization Analysis [PDF]

open access: yes, 2008
With polarization of the cosmic microwave background (CMB) now detected, and confirmed by several independent experiments, the next goal is to characterise accurately its statistical properties. In these lecture notes we review the physical motivation for pursuing CMB polarization, and the basic statistical properties of the polarization fields.
openaire   +2 more sources

Separation of Correlated Astrophysical Sources Using Multiple-Lag Data Covariance Matrices

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
This paper proposes a new strategy to separate astrophysical sources that are mutually correlated. This strategy is based on second-order statistics and exploits prior information about the possible structure of the mixing matrix.
Baccigalupi C   +5 more
doaj   +1 more source

Probing the statistic in the cosmic microwave background

open access: yes, 2009
Kolmogorov's statistic is used for the analysis of properties of perturbations in the Cosmic Microwave Background signal. We obtain the maps of the Kolmogorov stochasticity parameter for W and V band temperature data of WMAP which are differently ...
E. POGHOSIAN   +4 more
core   +1 more source

Testing the ΛCDM Cosmological Model with Forthcoming Measurements of the Cosmic Microwave Background with SPT-3G

open access: yesThe Astrophysical Journal
We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope.
K. Prabhu   +102 more
doaj   +1 more source

Cosmic Sculpture: A new way to visualise the Cosmic Microwave Background

open access: yes, 2016
3D printing presents an attractive alternative to visual representation of physical datasets such as astronomical images that can be used for research, outreach or teaching purposes, and is especially relevant to people with a visual disability.
Clements, D. L.   +2 more
core   +1 more source

Cosmic Microwave Background Radiation Anisotropy Induced by Cosmic Strings

open access: yes, 1994
We report on a current investigation of the anisotropy pattern induced by cosmic strings on the cosmic microwave background radiation (MBR). We have numerically evolved a network of cosmic strings from a redshift of $Z = 100$ to the present and ...
Allen, B.   +4 more
core   +1 more source

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