L. P. L. Colombo
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View article: LSPE-Strip on-sky calibration strategy using bright celestial sources
LSPE-Strip on-sky calibration strategy using bright celestial sources Open
In this paper we describe the global on-sky calibration strategy of the LSPE-Strip instrument. Strip is a microwave telescope operating in the Q- and W-bands (central frequencies of 43 and 95 GHz respectively) from the Observatorio del Tei…
View article: Identifying frequency de-correlated dust residuals in <i>B</i>-mode maps by exploiting the spectral capability of bolometric interferometry
Identifying frequency de-correlated dust residuals in <i>B</i>-mode maps by exploiting the spectral capability of bolometric interferometry Open
Context. Astrophysical polarized foregrounds represent the most critical challenge in cosmic microwave background (CMB) B -mode experiments, requiring multifrequency observations to constrain astrophysical foregrounds and isolate the CMB s…
View article: LSPE-STRIP on-sky calibration strategy using bright celestial sources
LSPE-STRIP on-sky calibration strategy using bright celestial sources Open
In this paper we describe the global on-sky calibration strategy of the LSPE-Strip instrument. Strip is a microwave telescope operating in the Q- and W-bands (central frequencies of 43 and 95 GHz respectively) from the Observatorio del Tei…
View article: The European Low Frequency Survey
The European Low Frequency Survey Open
In this paper we present the European Low Frequency Survey (ELFS), a project that will enable the detection of primordial B-mode polarization by measuring the Galactic and extra-Galactic foregrounds in the 5– 120 GHz frequency window. Inde…
View article: Measuring the CMB primordial B-modes with Bolometric Interferometry
Measuring the CMB primordial B-modes with Bolometric Interferometry Open
The Q&U Bolometric Interferometer for Cosmology (QL’BIC) is the first bolometric interferometer designed to measure the primordial B -mode polarization of the Cosmic Microwave Background (CMB). Bolometric interferometry is a novel techniqu…
View article: The European Low Frequency Survey
The European Low Frequency Survey Open
In this paper we present the European Low Frequency Survey (ELFS), a project that will enable foregrounds-free measurements of primordial $B$-mode polarization to a level 10$^{-3}$ by measuring the Galactic and extra-Galactic emissions in …
View article: COSMOGLOBE DR1 results
COSMOGLOBE DR1 results Open
We present C OSMOGLOBE Data Release 1, which implements the first joint analysis of WMAP and Planck LFI time-ordered data, processed within a single Bayesian end-to-end framework. This framework directly builds on a similar analysis of the…
View article: Identifying frequency decorrelated dust residuals in B-mode maps by exploiting the spectral capability of bolometric interferometry
Identifying frequency decorrelated dust residuals in B-mode maps by exploiting the spectral capability of bolometric interferometry Open
Astrophysical polarized foregrounds represent the most critical challenge in Cosmic Microwave Background (CMB) B-mode experiments. Multi-frequency observations can be used to constrain astrophysical foregrounds to isolate the CMB contribut…
View article: COSMOGLOBE: Towards end-to-end CMB cosmological parameter estimation without likelihood approximations
COSMOGLOBE: Towards end-to-end CMB cosmological parameter estimation without likelihood approximations Open
We implement support for a cosmological parameter estimation algorithm in Commander and quantify its computational efficiency and cost. For a semi-realistic simulation similar to Planck LFI 70 GHz, we find that the computational cost of pr…
View article: COSMOGLOBE DR1 results
COSMOGLOBE DR1 results Open
Cosmic birefringence is a parity-violating effect that might have rotated the plane of the linearly polarized light of the cosmic microwave background (CMB) by an angle β since its emission. This angle has recently been measured to be nonz…
View article: Cosmoglobe: Towards end-to-end CMB cosmological parameter estimation without likelihood approximations
Cosmoglobe: Towards end-to-end CMB cosmological parameter estimation without likelihood approximations Open
We implement support for a cosmological parameter estimation algorithm as proposed by Racine et al. (2016) in Commander, and quantify its computational efficiency and cost. For a semi-realistic simulation similar to Planck LFI 70 GHz, we f…
View article: BEYONDPLANCK
BEYONDPLANCK Open
End-to-end simulations play a key role in the analysis of any high-sensitivity cosmic microwave background (CMB) experiment, providing high-fidelity systematic error propagation capabilities that are unmatched by any other means. In this p…
View article: Planck intermediate results V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect
Planck intermediate results V. Pressure profiles of galaxy clusters from the Sunyaev-Zeldovich effect Open
Taking advantage of the all-sky coverage and broadfrequency range of the Planck satellite, we study the Sunyaev-Zeldovich (SZ) and pressure profiles of 62 nearby massive clusters detected at high significance in the 14-month nominal survey…
View article: Planck intermediate results XI. The gas content of dark matter halos: The sunyaev-zeldovich-stellar mass relation for locally brightest galaxies
Planck intermediate results XI. The gas content of dark matter halos: The sunyaev-zeldovich-stellar mass relation for locally brightest galaxies Open
We present the scaling relation between Sunyaev-Zeldovich (SZ) signal and stellar mass for almost 260,000 locally brightest galaxies (LBGs) selected from the Sloan Digital Sky Survey (SDSS). These are predominantly the central galaxies of …
View article: From BeyondPlanck to Cosmoglobe: Open Science, Reproducibility, and Data Longevity
From BeyondPlanck to Cosmoglobe: Open Science, Reproducibility, and Data Longevity Open
The BeyondPlanck and Cosmoglobe collaborations have implemented the first integrated Bayesian end-to-end analysis pipeline for CMB experiments. The primary long-term motivation for this work is to develop a common analysis platform that su…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We present posterior sample-based cosmic microwave background (CMB) constraints from Planck LFI and WMAP observations as derived through global end-to-end Bayesian processing within the B EYOND P LANCK framework. We first used these sample…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We describe the B EYOND P LANCK project in terms of our motivation, methodology, and main products, and provide a guide to a set of companion papers that describe each result in more detail. Building directly on experience from ESA’s Planc…
View article: BeyondPlanck: XV. Limits on large-scale polarized anomalous microwave emission from Planck LFI and WMAP
BeyondPlanck: XV. Limits on large-scale polarized anomalous microwave emission from Planck LFI and WMAP Open
We constrained the level of polarized anomalous microwave emission (AME) on large angular scales using Planck Low-Frequency Instrument (LFI) and WMAP polarization data within a Bayesian cosmic microwave background (CMB) analysis framework.…
View article: BeyondPlanck: I. Global Bayesian analysis of the Planck Low Frequency Instrument data
BeyondPlanck: I. Global Bayesian analysis of the Planck Low Frequency Instrument data Open
We describe the B EYOND P LANCK project in terms of our motivation, methodology, and main products, and provide a guide to a set of companion papers that describe each result in more detail. Building directly on experience from ESA’s Planc…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We present Planck Low Frequency Instrument (LFI) frequency sky maps derived within the B EYOND P LANCK framework. This framework draws samples from a global posterior distribution that includes instrumental, astrophysical, and cosmological…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We present a Bayesian calibration algorithm for cosmic microwave background (CMB) observations as implemented within the global end-to-end B EYOND P LANCK framework and applied to the Planck Low Frequency Instrument (LFI) data. Following t…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We present cosmological parameter constraints estimated using the Bayesian B EYOND P LANCK analysis framework. This method supports seamless end-to-end error propagation from raw time-ordered data onto final cosmological parameters. As a f…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We present the intensity foreground algorithms and model employed within the B EYOND P LANCK analysis framework. The B EYOND P LANCK analysis is aimed at integrating component separation and instrumental parameter sampling within a global …
View article: BeyondPlanck IV. On end-to-end simulations in CMB analysis -- Bayesian versus frequentist statistics
BeyondPlanck IV. On end-to-end simulations in CMB analysis -- Bayesian versus frequentist statistics Open
End-to-end simulations play a key role in the analysis of any high-sensitivity CMB experiment, providing high-fidelity systematic error propagation capabilities unmatched by any other means. In this paper, we address an important issue reg…
View article: BeyondPlanck XI. Bayesian CMB analysis with sample-based end-to-end error propagation
BeyondPlanck XI. Bayesian CMB analysis with sample-based end-to-end error propagation Open
We present posterior sample-based cosmic microwave background (CMB) constraints from Planck LFI and WMAP observations derived through global end-to-end Bayesian processing. We use these samples to study correlations between CMB, foreground…
View article: BeyondPlanck X. Planck LFI frequency maps with sample-based error propagation
BeyondPlanck X. Planck LFI frequency maps with sample-based error propagation Open
We present Planck LFI frequency sky maps derived within the BeyondPlanck framework. This framework draws samples from a global posterior distribution that includes instrumental, astrophysical and cosmological parameters, and the main produ…
View article: From BEYONDPLANCK to COSMOGLOBE: Preliminary WMAP <i>Q</i>-band analysis
From BEYONDPLANCK to COSMOGLOBE: Preliminary WMAP <i>Q</i>-band analysis Open
We present the first application of the C OSMOGLOBE analysis framework by analyzing nine-year WMAP time-ordered observations that uses similar machinery to that of B EYOND P LANCK for the Planck Low Frequency Instrument (LFI). We analyzed …
View article: BEYONDPLANCK
BEYONDPLANCK Open
We present a Bayesian method for estimating instrumental noise parameters and propagating noise uncertainties within the global B EYOND P LANCK Gibbs sampling framework, which we applied to Planck Low Frequency Instrument (LFI) time-ordere…
View article: BEYONDPLANCK
BEYONDPLANCK Open
We describe the correction procedure for Analog-to-Digital Converter (ADC) differential non-linearities (DNL) adopted in the Bayesian end-to-end B EYOND P LANCK analysis framework. This method is nearly identical to that developed for the …
View article: BeyondPlanck XII. Cosmological parameter constraints with end-to-end error propagation
BeyondPlanck XII. Cosmological parameter constraints with end-to-end error propagation Open
We present cosmological parameter constraints as estimated using the Bayesian BeyondPlanck (BP) analysis framework. This method supports seamless end-to-end error propagation from raw time-ordered data to final cosmological parameters. As …