Planck low frequency instrument

Mandolesi, N.; Burigana, C.; Butler, R. C.; Cuttaia, F.; Rosa, A. de; Finelli⋆, F.; Franceschi, E.; Gruppuso, A.; Malaspina, M.; Morgante, G.; Morigi, G.; Popa, L.; Sandri, M.; Stringhetti, L.; Terenzi, L.; Valenziano, L.; Villa, F.

doi:10.1063/1.1475627

Cited by 18 publications

(11 citation statements)

References 7 publications

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“…The detector sensitivities of modern experiments have permitted to measure fluctuations of the CMB temperature with such a sensitivity that the contamination of the data by astrophysical foreground radiations, rather than by instrumental noise, is becoming the major source of limitation. This will be the case, in particular, for the upcoming observations by the Planck mission, to be launched by ESA in 2008 [Lamarre et al (2003), Mandolesi et al (2000), Lamarre et al (2000)], as well as for next generation instruments dedicated to the observation of CMB polarisation.…”

Section: Introductionmentioning

confidence: 99%

Diffuse Source Separation in CMB Observations

Delabrouille

Cardoso

2008

Data Analysis in Cosmology

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ISBN: 978-3-540-23972-7Spectacular advances in the understanding of the Big-Bang model of cosmology have been due to increasingly accurate observations of the properties of the cosmic microwave background (CMB). The detector sensitivities of modern experiments have permitted to measure fluctuations of the CMB temperature with such a sensitivity that the contamination of the data by astrophysical foreground radiations, rather than by instrumental noise, is becoming the major source of limitation. This will be the case, in particular, for the upcoming observations by the Planck mission, to be launched by ESA in 2008 (Lamarre et al. [36], Mandolesi et al. [41], Lamarre et al. [35]), as well as for next-generation instruments dedicated to the observation of CMB polarization

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Section: Introductionmentioning

confidence: 99%

Diffuse Source Separation in CMB Observations

Delabrouille

Cardoso

2008

Data Analysis in Cosmology

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“…Assuming a Poisson distribution of point sources in the sky, they found that the central frequency channels of the Planck mission will be 'clean' (i.e, only a few high latitude pixels will be contaminated by bright undetected sources). As for radio selected extragalactic sources, which contaminate CMB anisotropies at Planck Low Frequency Instrument (LFI) channels (Mandolesi et al 1998), their clustering signal was found to give a generally small contribution to temperature fluctuations, thanks to the broadness of the local luminosity function (Dunlop and Peacock 1990) and of the redshift distribution of sources which dilute the clustering signal (Toffolatti et al 1998Blake and Wall 2002). At higher frequencies, the clustering of far-IR selected dusty galaxies was found to give a more relevant -albeit not dominant -contribution to temperature anisotropies.…”

Section: Introductionmentioning

confidence: 99%

Predictions of the Angular Power Spectrum of Clustered Extragalactic Point Sources at Cosmic Microwave Background Frequencies from Flat and All‐Sky Two‐dimensional Simulations

González‐Nuevo

Toffolatti

Argüeso

2005

ApJ

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We present predictions on the angular power spectrum of cosmic microwave background (CMB) fluctuations due to extragalactic point sources (EPS) by using a method for simulating realistic 2D distributions of clustered EPS. Both radio and far-IR selected source populations are taken into account. To analyze different clustering scenarios, we exploit angular power spectra of EPS, P (k), estimated either by data coming from currently available surveys or by means of theoretical predictions.By adopting the source number counts predicted by the Toffolatti et al. (1998) evolution model -capable of accounting well for the available data at radio cm wavelengths -we are able to reproduce current data on the two-point angular correlation functions, w(θ), of radio sources. We can confirm that the detection of primordial CMB anisotropies is not hampered by undetected clustered sources at frequencies ≤ 150 − 200 GHz. On the other hand, our current findings show that at higher frequencies the clustering signal could severely reduce the

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“…Here we consider the constraints on w Q -Ω 0 that can be obtained from the analysis of the small scale CMB bispectrum for two experimental settings: the combination of MAP [4] and Atacama Cosmology Telescope (ACT; [5]), and the Planck surveyor satellite [6,7].…”

Section: Introductionmentioning

confidence: 99%

Dark energy and cosmic microwave background bispectrum

2002

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We compute the cosmic microwave background bispectrum arising from the cross-correlation of primordial, lensing and Rees-Sciama signals. The amplitude of the bispectrum signal is sensitive to the matter density parameter, Omega_0, and the equation of state of the dark energy, which we parameterize by w_Q. We conclude that the dataset of the Atacama Cosmology Telescope, combined with MAP 2-year data or the Planck data set alone will allow us to break the degeneracy between Omega_0 and w_Q that arises from the analysis of CMB power spectrum. In particular a joint measurement of Omega_0 and w_Q with 10% and 30% error on the two parameters respectively, at the 90% confidence level can realistically be achieved.Comment: To appear in PRD, 6 pages, 3 figures, minor changes to match the accepted versio

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Planck low frequency instrument

Cited by 18 publications

References 7 publications

Diffuse Source Separation in CMB Observations

Diffuse Source Separation in CMB Observations

Predictions of the Angular Power Spectrum of Clustered Extragalactic Point Sources at Cosmic Microwave Background Frequencies from Flat and All‐Sky Two‐dimensional Simulations

Dark energy and cosmic microwave background bispectrum

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