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24 results on '"Scoccola C. G."'

1. Spectral Imaging with QUBIC: building astrophysical components from Time-Ordered-Data using Bolometric Interferometry

Author

Regnier, M., Laclavere, T., Hamilton, J-Ch., Bunn, E., Chabirand, V., Chanial, P., Goetz, L., Kardum, L., Masson, P., Granese, N. Miron, Scóccola, C. G., Torchinsky, S. A., Battistelli, E., Bersanelli, M., Columbro, F., Coppolecchia, A., Costanza, B., De Bernardis, P., De Gasperis, G., Ferazzoli, S., Flood, A., Ganga, K., Gervasi, M., Grandsire, L., Manzan, E ., Masi, S., Mennella, A., Mousset, L., O'Sullivan, C., Paiella, A., Piacentini, F., Piat, M., Piccirillo, L., Rasztocky, E., Stolpovskiy, M., and Zannoni, M.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The detection of B-modes in the CMB polarization pattern is a major issue in modern cosmology and must therefore be handled with analytical methods that produce reliable results. We describe a method that uses the frequency dependency of the QUBIC synthesized beam to perform component separation at the map-making stage, to obtain more precise results. We aim to demonstrate the feasibility of component separation during the map-making stage in time domain space. This new technique leads to a more accurate description of the data and reduces the biases in cosmological analysis. The method uses a library for highly parallel computation which facilitates the programming and permits the description of experiments as easily manipulated operators. These operators can be combined to obtain a joint analysis using several experiments leading to maximized precision. The results show that the method works well and permits end-to-end analysis for the CMB experiments, and in particular, for QUBIC. The method includes astrophysical foregrounds, and also systematic effects like gain variation in the detectors. We developed a software pipeline that produces uncertainties on tensor-to-scalar ratio at the level of $\sigma(r) \sim 0.023$ using only QUBIC simulated data., Comment: 15 pages, 13 figures

Published
2024

2. Spectral Imaging with QUBIC: building frequency maps from Time-Ordered-Data using Bolometric Interferometry

Author

Chanial, P., Regnier, M., Hamilton, J-Ch., Bunn, E., Chabirand, V., Flood, A., Lerena, M. M. Gamboa, Kardum, L., Laclavere, T., Manzan, E ., Mousset, L., Stolpovskiy, M., Torchinsky, S. A., Battistelli, E., Bersanelli, M., Columbro, F., Coppolecchia, A., Costanza, B., De Bernardis, P., De Gasperis, G., Ferazzoli, S., Ganga, K., Gervasi, M., Grandsire, L., Masi, S., Mennella, A., Granese, N. Miron, O'Sullivan, C., Paiella, A., Piacentini, F., Piat, M., Piccirillo, L., Rasztocky, E., Scóccola, C. G., and Zannoni, M.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The search for relics from the inflation era in the form of B-mode polarization of the CMB is a major challenge in cosmology. The main obstacle appears to come from the complexity of Galactic foregrounds that need to be removed. Multi-frequency observations are key to mitigating their contamination and mapping primordial fluctuations. We present "Spectral-Imaging", a method to reconstruct sub-frequency maps of the CMB polarization within the instrument's physical bandwidth, a unique feature of Bolometric Interferometry that could be crucial for foreground mitigation as it provides an increased spectral resolution. Our technique uses the frequency evolution of the shape of the Bolometric Interferometer's synthesized beam to reconstruct frequency information from the time domain data. We reconstruct sub-frequency maps using an inverse problem approach based on detailed modeling of the instrument acquisition. We use external data to regularize the convergence of the estimator and account for bandpass mismatch and varying angular resolution. The reconstructed maps are unbiased and allow exploiting the spectral-imaging capacity of QUBIC. Using end-to-end simulations of the QUBIC instrument, we perform a cross-spectra analysis to extract a forecast on the tensor-to-scalar ratio constraint of $\sigma(r) = 0.0225$ after component separation., Comment: 14 pages, 8 figures

Published
2024

3. The advantage of Bolometric Interferometry for controlling Galactic foreground contamination in CMB primordial B-modes measurements

Author

Manzan, E., Regnier, M., Hamilton, J-Ch., Mennella, A., Errard, J., Zapelli, L., Torchinsky, S. A., Paradiso, S., Battistelli, E., Bersanelli, M., De Bernardis, P., De Petris, M., D'Alessandro, G., Gervasi, M., Masi, S., Piat, M., Rasztocky, E., Romero, G. E, Scoccola, C. G., Zannoni, M., and Collaboration, the QUBIC

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In the quest for the faint primordial B-mode polarization of the Cosmic Microwave Background, three are the key requirements for any present or future experiment: an utmost sensitivity, excellent control over instrumental systematic effects and over Galactic foreground contamination. Bolometric Interferometry (BI) is a novel technique that matches them all by combining the sensitivity of bolometric detectors, the control of instrumental systematics from interferometry and a software-based, tunable, in-band spectral resolution due to its ability to perform band-splitting during data analysis (spectral imaging). In this paper, we investigate how the spectral imaging capability of BI can help in detecting residual contamination in case an over-simplified model of foreground emission is assumed in the analysis. To mimic this situation, we focus on the next generation of ground-based CMB experiment, CMB-S4, and compare its anticipated sensitivities, frequency and sky coverage with a hypothetical version of the same experiment based on BI, CMB-S4/BI, assuming that line-of-sight (LOS) frequency decorrelation is present in dust emission but is not accounted for during component separation. We show results from a Monte-Carlo analysis based on a parametric component separation method (FGBuster), highlighting how BI has the potential to diagnose the presence of foreground residuals in estimates of the tensor-to-scalar ratio $r$ in the case of unaccounted Galactic dust LOS frequency decorrelation., Comment: To appear in Proc. of the mm Universe 2023 conference, Grenoble (France), June 2023, published by F. Mayet et al. (Eds), EPJ Web of conferences, EDP Sciences

Published
2023

4. Identifying frequency decorrelated dust residuals in B-mode maps by exploiting the spectral capability of bolometric interferometry

Author

Regnier, M., Manzan, E., Hamilton, J. -Ch, Mennella, A., Errard, J., Zapelli, L., Torchinsky, S. A., Paradiso, S., Battistelli, E., De Bernardis, P., Colombo, L., De Petris, M., D'Alessandro, G., Garcia, B., Gervasi, M., Masi, S., Mousset, L., Granese, N. Miron, O'Sullivan, C., Piat, M., Rasztocky, E., Romero, G. E., Scoccola, C. G., and Zannoni, M.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

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 contribution. However, recent observations indicate that foreground emission may be more complex than anticipated. We investigate how the increased spectral resolution provided by band splitting in Bolometric Interferometry (BI) through a technique called spectral imaging can help control the foreground contamination in the case of unaccounted Galactic dust frequency decorrelation along the line-of-sight. We focus on the next generation ground-based CMB experiment CMB-S4, and compare its anticipated sensitivities, frequency and sky coverage with a hypothetical version of the same experiment based on BI. We perform a Monte-Carlo analysis based on parametric component separation methods (FGBuster and Commander) and compute the likelihood on the recovered tensor-to-scalar ratio. The main result of this analysis is that spectral imaging allows us to detect systematic uncertainties on r from frequency decorrelation when this effect is not accounted for in component separation. Conversely, an imager would detect a biased value of r and would be unable to spot the presence of a systematic effect. We find a similar result in the reconstruction of the dust spectral index, where we show that with BI we can measure more precisely the dust spectral index also when frequency decorrelation is present. The in-band frequency resolution provided by BI allows us to identify dust LOS frequency decorrelation residuals where an imager of similar performance would fail. This opens the prospect to exploit this potential in the context of future CMB polarization experiments that will be challenged by complex foregrounds in their quest for B-modes detection., Comment: 13 Pages, 15 figures, 4 tables. Accepted by A&A

Published
2023
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5. Status of QUBIC, the Q&U Bolometer for Cosmology

Author

Mousset, L., Ade, P., Almela, A., Amico, G., Arnaldi, L. H., Aumont, J., Banfi, S., Battistelli, E. S., Bélier, B., Bergé, L., Bernard, J. -Ph., de Bernardis, P., Bersanelli, M., Bonaparte, J., Bonilla, J. D., Bunn, E., Buzi, D., Camilieri, D., Cavaliere, F., Chanial, P., Chapron, C., Colombo, S., Columbro, F., Coppolecchia, A., Costanza, B., DÁlessandro, G., De Gasperis, G., De Leo, M., De Petris, M., Del Castillo, N., Dheilly, S., Etchegoyen, A., Famá, M., Ferreyro, L. P., Franceschet, C., Lerena, M. M. Gamboa, Ganga, K. M., García, B., Redondo, M. E. García, Gayer, D., Geria, J. M., Gervasi, M., Giard, M., Gilles, V., Berisso, M. Gómez, González, M., Gradziel, M., Grandsire, L., Hamilton, J. -Ch., Hampel, M. R., Isopi, G., Kaplan, J., Kristukat, C., Lamagna, L., Lazarte, F., Loucatos, S., Mancilla, A., Mandelli, D., Manzan, E., Marnieros, S., Marty, W., Masi, S., May, A., Maya, J., McCulloch, M., Mele, L., Melo, D., Mennella, A., Mirón-Granese, N., Montier, L., Müller, N., Murphy, J. D., Nati, F., OŚullivan, C., Paiella, A., Pajot, F., Paradiso, S., Passerini, A., Pelosi, A., Perciballi, M., Pezzotta, F., Piacentini, F., Piat, M., Piccirillo, L., Pisano, G., Platino, M., Polenta, G., Prêle, D., Rambaud, D., Rasztocky, E., Régnier, M., Reyes, C., Rodríguez, F., Rodríguez, C. A., Romero, G. E., Salum, J. M., Schillaci, A., Scóccola, C. G., Stankowiak, G., Supanitsky, A. D., Tartari, A., Thermeau, J. -P., Timbie, P., Torchinsky, S. A., Tucker, G., Tucker, C., Vacher, L., Voisin, F., Wright, M., Zannoni, M., and Zullo, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Q&U Bolometric Interferometer for Cosmology (QUBIC) is a novel kind of polarimeter optimized for the measurement of the B-mode polarization of the Cosmic Microwave Back-ground (CMB), which is one of the major challenges of observational cosmology. The signal is expected to be of the order of a few tens of nK, prone to instrumental systematic effects and polluted by various astrophysical foregrounds which can only be controlled through multichroic observations. QUBIC is designed to address these observational issues with a novel approach that combines the advantages of interferometry in terms of control of instrumental systematics with those of bolometric detectors in terms of wide-band, background-limited sensitivity., Comment: Contribution to the 2022 Cosmology session of the 33rd Rencontres de Blois. arXiv admin note: substantial text overlap with arXiv:2203.08947

Published
2022

6. QUBIC IV: Performance of TES Bolometers and Readout Electronics

Author

Piat, M., Stankowiak, G., Battistelli, E. S., de Bernardis, P., Alessandro, G. D, De Petris, M., Grandsire, L., Hamilton, J. -Ch., Hoang, T. D., Marnieros, S., Masi, S., Mennella, A., Mousset, L., Sullivan, C. O, Prele, D., Tartari, A., Thermeau, J. -P., Torchinsky, S. A., Voisin, F., Zannoni, M., Ade, P., Alberro, J. G., Almela, A., Amico, G., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Belier, B., Bau, A., Bennett, D., Berge, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Burke, D., Buzi, D., Cavaliere, F., Chanial, P., Chapron, C., Charlassier, R., Cerutti, A. C. Cobos, Columbro, F., Coppolecchia, A., De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Franceschet, C., Lerena, M. M. Gamboa, Ganga, K. M., Garcia, B., Redondo, M. E. Garcia, Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., Berisson, M. Gomez, Gonzalez, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versille, S., Incardona, F., Jules, E., Kaplan, J., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Maffei, B., Marty, W., Mattei, A., May, A., McCulloch, M., Mele, L., Melo, D., Montier, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Paiella, A., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A., Perbost, C., Perciballi, M., Pezzotta, F., Piacentini, F., Piccirillo, L., Pisano, G., Platino, M., Polenta, G., Puddu, R., Rambaud, D., Rasztocky, E., Ringegni, P., Romero, G. E., Salum, J. M., Schillaci, A., Scoccola, C. G., Scully, S., Spinelli, S., Stolpovskiy, M., Supanitsky, A. D., Timbie, P., Tomasi, M., Tucker, C., Tucker, G., Vigano, D., Vittorio, N., Wicek, F., Wright, M., and Zullo, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

A prototype version of the Q & U bolometric interferometer for cosmology (QUBIC) underwent a campaign of testing in the laboratory at Astroparticle Physics and Cosmology laboratory in Paris (APC). The detection chain is currently made of 256 NbSi transition edge sensors (TES) cooled to 320 mK. The readout system is a 128:1 time domain multiplexing scheme based on 128 SQUIDs cooled at 1 K that are controlled and amplified by an SiGe application specific integrated circuit at 40 K. We report the performance of this readout chain and the characterization of the TES. The readout system has been functionally tested and characterized in the lab and in QUBIC. The low noise amplifier demonstrated a white noise level of 0.3 nV.Hz^-0.5. Characterizations of the QUBIC detectors and readout electronics includes the measurement of I-V curves, time constant and the noise equivalent power. The QUBIC TES bolometer array has approximately 80% detectors within operational parameters. It demonstrated a thermal decoupling compatible with a phonon noise of about 5.10^-17 W.Hz^-0.5 at 410 mK critical temperature. While still limited by microphonics from the pulse tubes and noise aliasing from readout system, the instrument noise equivalent power is about 2.10^-16 W.Hz^-0.5, enough for the demonstration of bolometric interferometry., Comment: Accepted for publication in JCAP

Published
2021
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7. QUBIC II: Spectro-Polarimetry with Bolometric Interferometry

Author

Mousset, L., Lerena, M. M. Gamboa, Battistelli, E. S., de Bernardis, P., Chanial, P., D'Alessandro, G., Dashyan, G., De Petris, M., Grandsire, L., Hamilton, J. -Ch., Incardona, F., Landau, S., Marnieros, S., Masi, S., Mennella, A., O'Sullivan, C., Piat, M., Ricciardi, G., Scóccola, C. G., Stolpovskiy, M., Tartari, A., Thermeau, J. -P., Torchinsky, S. A., Voisin, F., Zannoni, M., Ade, P., Alberro, J. G., Almela, A., Amico, G., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Bélier, B., Baù, A., Bennett, D., Bergé, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Burke, D., Buzi, D., Cavaliere, F., Chapron, C., Charlassier, R., Cerutti, A. C. Cobos, Columbro, F., Coppolecchia, A., De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Franceschet, C., Ganga, K. M., García, B., Redondo, M. E. García, Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., Berisso, M. Gómez, González, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versillé, S., Jules, E., Kaplan, J., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Maffei, B., Marty, W., Mattei, A., May, A., McCulloch, M., Mele, L., Melo, D., Montier, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Paiella, A., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A., Perbost, C., Perciballi, M., Pezzotta, F., Piacentini, F., Piccirillo, L., Pisano, G., Platino, M., Polenta, G., Prêle, D., Puddu, R., Rambaud, D., Rasztocky, E., Ringegni, P., Romero, G. E., Salum, J. M., Schillaci, A., Scully, S., Spinelli, S., Stankowiak, G., Supanitsky, A. D., Timbie, P., Tomasi, M., Tucker, G., Tucker, C., Viganò, D., Vittorio, N., Wicek, F., Wright, M., and Zullo, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Bolometric interferometry is a novel technique that has the ability to perform spectral imaging. A bolometric interferometer observes the sky in a wide frequency band and can reconstruct sky maps in several sub-bands within the physical band in post-processing of the data. This provides a powerful spectral method to discriminate between the cosmic microwave background (CMB) and astrophysical foregrounds. In this paper, the methodology is illustrated with examples based on the Q \& U Bolometric Interferometer for Cosmology (QUBIC) which is a ground-based instrument designed to measure the B-mode polarization of the sky at millimeter wavelengths. We consider the specific cases of point source reconstruction and Galactic dust mapping and we characterize the point spread function as a function of frequency. We study the noise properties of spectral imaging, especially the correlations between sub-bands, using end-to-end simulations together with a fast noise simulator. We conclude showing that spectral imaging performance are nearly optimal up to five sub-bands in the case of QUBIC., Comment: 27 pages, 18 figures. Accepted by JCAP on July 6, 2021. Second paper of series of 8 in a special JCAP edition on QUBIC

Published
2020
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8. QUBIC V: Cryogenic system design and performance

Author

Masi, S., Battistelli, E. S., de Bernardis, P., Chapron, C., Columbro, F., D'Alessandro, G., De Petris, M., Grandsire, L., Hamilton, J. -Ch., Marnieros, S., Mele, L., May, A., Mennella, A., O'Sullivan, C., Paiella, A., Piacentini, F., Piat, M., Piccirillo, L., Presta, G., Schillaci, A., Tartari, A., Thermeau, J. -P., Torchinsky, S. A., Voisin, F., Zannoni, M., Ade, P., Alberro, J. G., Almela, A., Amico, G., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Bélier, B., Baù, A., Bennett, D., Bergé, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Burke, D., Buzi, D., Cavaliere, F., Chanial, P., Charlassier, R., Cerutti, A. C. Cobos, Coppolecchia, A., De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Franceschet, C., Lerena, M. M. Gamboa, Ganga, K. M., García, B., Redondo, M. E. García, Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., Berisso, M. Gómez, González, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versillé, S., Incardona, F., Jules, E., Kaplan, J., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Maffei, B., Marty, W., Mattei, A., McCulloch, M., Melo, D., Montier, L., Mousset, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A., Perbost, C., Perciballi, M., Pezzotta, F., Pisano, G., Platino, M., Polenta, G., Prêle, D., Puddu, R., Rambaud, D., Rasztocky, E., Ringegni, P., Romero, G. E., Salum, J. M., Scóccola, C. G., Scully, S., Spinelli, S., Stankowiak, G., Stolpovskiy, M., Supanitsky, A. D., Timbie, P., Tomasi, M., Tucker, G., Tucker, C., Viganò, D., Vittorio, N., Wicek, F., Wright, M., and Zullo, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

Current experiments aimed at measuring the polarization of the Cosmic Microwave Background (CMB) use cryogenic detector arrays and cold optical systems to boost the mapping speed of the sky survey. For these reasons, large volume cryogenic systems, with large optical windows, working continuously for years, are needed. Here we report on the cryogenic system of the QUBIC (Q and U Bolometric Interferometer for Cosmology) experiment: we describe its design, fabrication, experimental optimization and validation in the Technological Demonstrator configuration. The QUBIC cryogenic system is based on a large volume cryostat, using two pulse-tube refrigerators to cool at ~3K a large (~1 m^3) volume, heavy (~165kg) instrument, including the cryogenic polarization modulator, the corrugated feedhorns array, and the lower temperature stages; a 4He evaporator cooling at ~1K the interferometer beam combiner; a 3He evaporator cooling at ~0.3K the focal-plane detector arrays. The cryogenic system has been tested and validated for more than 6 months of continuous operation. The detector arrays have reached a stable operating temperature of 0.33K, while the polarization modulator has been operated from a ~10K base temperature. The system has been tilted to cover the boresight elevation range 20 deg -90 deg without significant temperature variations. The instrument is now ready for deployment to the high Argentinean Andes., Comment: This is one of a series of papers on the QUBIC experiment status - This version of the paper matches the one accepted for publication on Journal of Cosmology and Astroparticle Physics

Published
2020
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9. QUBIC VI: cryogenic half wave plate rotator, design and performances

Author

D'Alessandro, G., Mele, L., Columbro, F., Amico, G., Battistelli, E. S., de Bernardis, P., Coppolecchia, A., De Petris, M., Grandsire, L., Hamilton, J. -Ch., Lamagna, L., Marnieros, S., Masi, S., Mennella, A., O'Sullivan, C., Paiella, A., Piacentini, F., Piat, M., Pisano, G., Presta, G., Tartari, A., Torchinsky, S. A., Voisin, F., Zannoni, M., Ade, P., Alberro, J. G., Almela, A., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Bélier, B., Baù, A., Bennett, D., Bergé, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Burke, D., Buzi, D., Cavaliere, F., Chanial, P., Chapron, C., Charlassier, R., Cerutti, A. C. Cobos, De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Franceschet, C., Lerena, M. M. Gamboa, Ganga, K. M., García, B., Redondo, M. E. García, Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., Berisso, M. Gómez, González, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versillé, S., Incardona, F., Jules, E., Kaplan, J., Kristukat, C., Loucatos, S., Louis, T., Maffei, B., Marty, W., Mattei, A., May, A., McCulloch, M., Melo, D., Montier, L., Mousset, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A., Perbost, C., Perciballi, M., Pezzotta, F., Piccirillo, L., Platino, M., Polenta, G., Prêle, D., Puddu, R., Rambaud, D., Rasztocky, E., Ringegni, P., Romero, G. E., Salum, J. M., Schillaci, A., Scóccola, C. G., Scully, S., Spinelli, S., Stankowiak, G., Stolpovskiy, M., Supanitsky, A. D., Thermeau, J. -P., Timbie, P., Tomasi, M., Tucker, G., Tucker, C., Viganò, D., Vittorio, N., Wicek, F., Wright, M., and Zullo, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Inflation Gravity Waves B-Modes polarization detection is the ultimate goal of modern large angular scale cosmic microwave background (CMB) experiments around the world. A big effort is undergoing with the deployment of many ground-based, balloon-borne and satellite experiments using different methods to separate this faint polarized component from the incoming radiation. One of the largely used technique is the Stokes Polarimetry that uses a rotating half-wave plate (HWP) and a linear polarizer to separate and modulate the polarization components with low residual cross-polarization. This paper describes the QUBIC Stokes Polarimeter highlighting its design features and its performances. A common systematic with these devices is the generation of large spurious signals synchronous with the rotation and proportional to the emissivity of the optical elements. A key feature of the QUBIC Stokes Polarimeter is to operate at cryogenic temperature in order to minimize this unwanted component. Moving efficiently this large optical element at low temperature constitutes a big engineering challenge in order to reduce friction power dissipation. Big attention has been given during the designing phase to minimize the differential thermal contractions between parts. The rotation is driven by a stepper motor placed outside the cryostat to avoid thermal load dissipation at cryogenic temperature. The tests and the results presented in this work show that the QUBIC polarimeter can easily achieve a precision below 0.1{\deg} in positioning simply using the stepper motor precision and the optical absolute encoder. The rotation induces only few mK of extra power load on the second cryogenic stage (~ 8 K)., Comment: Part of a series of 8 papers on QUBIC to be submitted to a special issue of JCAP

Published
2020
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10. Thermal architecture for the QUBIC cryogenic receiver

Author

May, A. J., Chapron, C., Coppi, G., D'Alessandro, G., de Bernardis, P., Masi, S., Melhuish, S., Piat, M., Piccirillo, L., Schillaci, A., Thermeau, J. -P., Ade, P., Amico, G., Auguste, D., Aumont, J., Banfi, S., Barbara, G., Battaglia, P., Battistelli, E., Bau, A., Belier, B., Bennett, D., Berge, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bleurvacq, N., Bonaparte, J., Bonis, J., Bordier, G., Breelle, E., Bunn, E., Burke, D., Buzi, D., Buzzelli, A., Cavaliere, F., Chanial, P., Charlassier, R., Columbro, F., Coppolecchia, A., Couchot, F., D'Agostino, R., De Gasperis, G., De Leo, M., De Petris, M., Di Donato, A., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Franceschet, C., Lerena, M. M. Gamboa, Garcia, B., Garrido, X., Gaspard, M., Gault, A., Gayer, D., Gervasi, M., Giard, M., Giraud-Heraud, Y., Berisso, M. Gomez, Gonzalez, M., Gradziel, M., Grandsire, L., Guerrard, E., Hamilton, J. -Ch., Harari, D., Haynes, V., Henrot-Versille, S., Hoang, D. T., Incardona, F., Jules, E., Kaplan, J., Korotkov, A., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Lowitz, A., Lukovic, V., Luterstein, R., Maffei, B., Marnieros, S., Mattei, A., McCulloch, M. A., Medina, M. C., Mele, L., Mennella, A., Montier, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., O'Sullivan, C., Olivieri, E., Paiella, A., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A., Perbost, C., Perdereau, O., Pezzotta, F., Piacentini, F., Pisano, G., Polenta, G., Prele, D., Puddu, R., Rambaud, D., Ringegni, P., Romero, G. E., Salatino, M., Scoccola, C. G., Scully, S., Spinelli, S., Stolpovskiy, M., Suarez, F., Tartari, A., Timbie, P., Torchinsky, S. A., Tristram, M., Truongcanh, V., Tucker, C., Tucker, G., Vanneste, S., Vigano, D., Vittorio, N., Voisin, F., Watson, B., Wicek, F., Zannoni, M., and Zullo, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

QUBIC, the QU Bolometric Interferometer for Cosmology, is a novel forthcoming instrument to measure the B-mode polarization anisotropy of the Cosmic Microwave Background. The detection of the B-mode signal will be extremely challenging; QUBIC has been designed to address this with a novel approach, namely bolometric interferometry. The receiver cryostat is exceptionally large and cools complex optical and detector stages to 40 K, 4 K, 1 K and 350 mK using two pulse tube coolers, a novel 4He sorption cooler and a double-stage 3He/4He sorption cooler. We discuss the thermal and mechanical design of the cryostat, modelling and thermal analysis, and laboratory cryogenic testing.

Published
2018

11. The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III

Author

Alam, Shadab, Albareti, Franco D., Prieto, Carlos Allende, Anders, F., Anderson, Scott F., Andrews, Brett H., Armengaud, Eric, Aubourg, Éric, Bailey, Stephen, Bautista, Julian E., Beaton, Rachael L., Beers, Timothy C., Bender, Chad F., Berlind, Andreas A., Beutler, Florian, Bhardwaj, Vaishali, Bird, Jonathan C., Bizyaev, Dmitry, Blake, Cullen H., Blanton, Michael R., Blomqvist, Michael, Bochanski, John J., Bolton, Adam S., Bovy, Jo, Bradley, A. Shelden, Brandt, W. N., Brauer, D. E., Brinkmann, J., Brown, Peter J., Brownstein, Joel R., Burden, Angela, Burtin, Etienne, Busca, Nicolás G., Cai, Zheng, Capozzi, Diego, Rosell, Aurelio Carnero, Carrera, Ricardo, Chen, Yen-Chi, Chiappini, Cristina, Chojnowski, S. Drew, Chuang, Chia-Hsun, Clerc, Nicolas, Comparat, Johan, Covey, Kevin, Croft, Rupert A. C., Cuesta, Antonio J., Cunha, Katia, da Costa, Luiz N., Da Rio, Nicola, Davenport, James R. A., Dawson, Kyle S., De Lee, Nathan, Delubac, Timothée, Deshpande, Rohit, Dutra-Ferreira, Letícia, Dwelly, Tom, Ealet, Anne, Ebelke, Garrett L., Edmondson, Edward M., Eisenstein, Daniel J., Escoffier, Stephanie, Esposito, Massimiliano, Fan, Xiaohui, Fernández-Alvar, Emma, Feuillet, Diane, Ak, Nurten Filiz, Finley, Hayley, Finoguenov, Alexis, Flaherty, Kevin, Fleming, Scott W., Font-Ribera, Andreu, Foster, Jonathan, Frinchaboy, Peter M., Galbraith-Frew, J. G., García-Hernández, D. A., Pérez, Ana E. García, Gaulme, Patrick, Ge, Jian, Génova-Santos, R., Ghezzi, Luan, Gillespie, Bruce A., Girardi, Léo, Goddard, Daniel, Gontcho, Satya Gontcho A, Hernández, Jonay I. González, Grebel, Eva K., Grieb, Jan Niklas, Grieves, Nolan, Gunn, James E., Guo, Hong, Harding, Paul, Hasselquist, Sten, Hawley, Suzanne L., Hayden, Michael, Hearty, Fred R., Ho, Shirley, Hogg, David W., Holley-Bockelmann, Kelly, Holtzman, Jon A., Honscheid, Klaus, Huehnerhoff, Joseph, Jiang, Linhua, Johnson, Jennifer A., Kinemuchi, Karen, Kirkby, David, Kitaura, Francisco, Klaene, Mark A., Kneib, Jean-Paul, Koenig, Xavier P., Lam, Charles R., Lan, Ting-Wen, Lang, Dustin, Laurent, Pierre, Goff, Jean-Marc Le, Leauthaud, Alexie, Lee, Khee-Gan, Lee, Young Sun, Licquia, Timothy C., Liu, Jian, Long, Daniel C., López-Corredoira, Martín, Lorenzo-Oliveira, Diego, Lucatello, Sara, Lundgren, Britt, Lupton, Robert H., Mack III, Claude E., Mahadevan, Suvrath, Maia, Marcio A. G., Majewski, Steven R., Malanushenko, Elena, Malanushenko, Viktor, Manchado, A., Manera, Marc, Mao, Qingqing, Maraston, Claudia, Marchwinski, Robert C., Margala, Daniel, Martell, Sarah L., Martig, Marie, Masters, Karen L., McBride, Cameron K., McGehee, Peregrine M., McGreer, Ian D., McMahon, Richard G., Ménard, Brice, Menzel, Marie-Luise, Merloni, Andrea, Mészáros, Szabolcs, Miller, Adam A., Miralda-Escudé, Jordi, Miyatake, Hironao, Montero-Dorta, Antonio D., More, Surhud, Morice-Atkinson, Xan, Morrison, Heather L., Muna, Demitri, Myers, Adam D., Newman, Jeffrey A., Neyrinck, Mark, Nguyen, Duy Cuong, Nichol, Robert C., Nidever, David L., Noterdaeme, Pasquier, Nuza, Sebastián E., O'Connell, Julia E., O'Connell, Robert W., O'Connell, Ross, Ogando, Ricardo L. C., Olmstead, Matthew D., Oravetz, Audrey E., Oravetz, Daniel J., Osumi, Keisuke, Owen, Russell, Padgett, Deborah L., Padmanabhan, Nikhil, Paegert, Martin, Palanque-Delabrouille, Nathalie, Pan, Kaike, Parejko, John K., Park, Changbom, Pâris, Isabelle, Pattarakijwanich, Petchara, Pellejero-Ibanez, M., Pepper, Joshua, Percival, Will J., Pérez-Fournon, Ismael, Pérez-Ràfols, Ignasi, Petitjean, Patrick, Pieri, Matthew M., Pinsonneault, Marc H., de Mello, Gustavo F. Porto, Prada, Francisco, Prakash, Abhishek, Price-Whelan, Adrian M., Raddick, M. Jordan, Rahman, Mubdi, Reid, Beth A., Rich, James, Rix, Hans-Walter, Robin, Annie C., Rockosi, Constance M., Rodrigues, Thaíse S., Rodríguez-Rottes, Sergio, Roe, Natalie A., Ross, Ashley J., Ross, Nicholas P., Rossi, Graziano, Ruan, John J., Rubiño-Martín, J. A., Rykoff, Eli S., Salazar-Albornoz, Salvador, Salvato, Mara, Samushia, Lado, Sánchez, Ariel G., Santiago, Basílio, Sayres, Conor, Schiavon, Ricardo P., Schlegel, David J., Schmidt, Sarah J., Schneider, Donald P., Schultheis, Mathias, Schwope, Axel D., Scóccola, C. G., Sellgren, Kris, Seo, Hee-Jong, Shane, Neville, Shen, Yue, Shetrone, Matthew, Shu, Yiping, Sivarani, Thirupathi, Skrutskie, M. F., Slosar, Anže, Smith, Verne V., Sobreira, Flávia, Stassun, Keivan G., Steinmetz, Matthias, Strauss, Michael A., Streblyanska, Alina, Swanson, Molly E. C., Tan, Jonathan C., Tayar, Jamie, Terrien, Ryan C., Thakar, Aniruddha R., Thomas, Daniel, Thompson, Benjamin A., Tinker, Jeremy L., Tojeiro, Rita, Troup, Nicholas W., Vargas-Magaña, Mariana, Vazquez, Jose A., Verde, Licia, Viel, Matteo, Vogt, Nicole P., Wake, David A., Wang, Ji, Weaver, Benjamin A., Weinberg, David H., Weiner, Benjamin J., White, Martin, Wilson, John C., Wisniewski, John P., Wood-Vasey, W. M., Yèche, Christophe, York, Donald G., Zakamska, Nadia L., Zamora, O., Zasowski, Gail, Zehavi, Idit, Zhao, Gong-Bo, Zheng, Zheng, Zhou, Xu, Zhou, Zhimin, Zhu, Guangtun, and Zou, Hu

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

The third generation of the Sloan Digital Sky Survey (SDSS-III) took data from 2008 to 2014 using the original SDSS wide-field imager, the original and an upgraded multi-object fiber-fed optical spectrograph, a new near-infrared high-resolution spectrograph, and a novel optical interferometer. All the data from SDSS-III are now made public. In particular, this paper describes Data Release 11 (DR11) including all data acquired through 2013 July, and Data Release 12 (DR12) adding data acquired through 2014 July (including all data included in previous data releases), marking the end of SDSS-III observing. Relative to our previous public release (DR10), DR12 adds one million new spectra of galaxies and quasars from the Baryon Oscillation Spectroscopic Survey (BOSS) over an additional 3000 sq. deg of sky, more than triples the number of H-band spectra of stars as part of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE), and includes repeated accurate radial velocity measurements of 5500 stars from the Multi-Object APO Radial Velocity Exoplanet Large-area Survey (MARVELS). The APOGEE outputs now include measured abundances of 15 different elements for each star. In total, SDSS-III added 2350 sq. deg of ugriz imaging; 155,520 spectra of 138,099 stars as part of the Sloan Exploration of Galactic Understanding and Evolution 2 (SEGUE-2) survey; 2,497,484 BOSS spectra of 1,372,737 galaxies, 294,512 quasars, and 247,216 stars over 9376 sq. deg; 618,080 APOGEE spectra of 156,593 stars; and 197,040 MARVELS spectra of 5,513 stars. Since its first light in 1998, SDSS has imaged over 1/3 of the Celestial sphere in five bands and obtained over five million astronomical spectra., Comment: DR12 data are available at http://www.sdss3.org/dr12. 30 pages. 11 figures. Accepted to ApJS

Published
2015
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12. Identifying frequency de-correlated dust residuals in B-mode maps by exploiting the spectral capability of bolometric interferometry

Author

Regnier, M, Manzan, E, Hamilton, J, Mennella, A, Errard, J, Zapelli, L, Torchinsky, S, Paradiso, S, Battistelli, E, De Bernardis, P, Colombo, L, De Petris, M, D'Alessandro, G, Garcia, B, Gervasi, M, Masi, S, Mousset, L, Miron Granese, N, O'Sullivan, C, Piat, M, Rasztocky, E, Romero, G, Scoccola, C, Zannoni, M, Regnier, M., Manzan, E., Hamilton, J. -Ch., Mennella, A., Errard, J., Zapelli, L., Torchinsky, S. A., Paradiso, S., Battistelli, E., De Bernardis, P., Colombo, L., De Petris, M., D'Alessandro, G., Garcia, B., Gervasi, M., Masi, S., Mousset, L., Miron Granese, N., O'Sullivan, C., Piat, M., Rasztocky, E., Romero, G. E., Scoccola, C. G., Zannoni, M., Regnier, M, Manzan, E, Hamilton, J, Mennella, A, Errard, J, Zapelli, L, Torchinsky, S, Paradiso, S, Battistelli, E, De Bernardis, P, Colombo, L, De Petris, M, D'Alessandro, G, Garcia, B, Gervasi, M, Masi, S, Mousset, L, Miron Granese, N, O'Sullivan, C, Piat, M, Rasztocky, E, Romero, G, Scoccola, C, Zannoni, M, Regnier, M., Manzan, E., Hamilton, J. -Ch., Mennella, A., Errard, J., Zapelli, L., Torchinsky, S. A., Paradiso, S., Battistelli, E., De Bernardis, P., Colombo, L., De Petris, M., D'Alessandro, G., Garcia, B., Gervasi, M., Masi, S., Mousset, L., Miron Granese, N., O'Sullivan, C., Piat, M., Rasztocky, E., Romero, G. E., Scoccola, C. G., and Zannoni, M.

Abstract

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 signal. However, recent observations indicate that foreground emission may be more complex than anticipated. Not properly accounting for these complexities during component separation can lead to a bias in the recovered tensor-to-scalar ratio. Aims. In this paper we investigate how the increased spectral resolution provided by band-splitting in bolometric interferometry (BI) through a technique called spectral imaging can help control the foreground contamination in the case of an unaccounted-for Galactic dust frequency de-correlation along the line of sight (LOS). Methods. We focused on the next-generation ground-based CMB experiment CMB-S4 and compared its anticipated sensitivity, frequency, and sky coverage with a hypothetical version of the same experiment based on BI (CMB-S4/BI). We performed a Monte Carlo analysis based on parametric component separation methods (FGBuster and Commander) and computed the likelihood of the recovered tensor-to-scalar ratio, r. Results. The main result is that spectral imaging allows us to detect systematic uncertainties on r from frequency de-correlation when this effect is not accounted for in the component separation. Conversely, an imager such as CMB-S4 would detect a biased value of r and would be unable to spot the presence of a systematic effect. We find a similar result in the reconstruction of the dust spectral index, and we show that with BI we can more precisely measure the dust spectral index when frequency de-correlation is present and not accounted for in the component separation. Conclusions. The in-band frequency resolution provided by BI allows us to identify dust LOS frequency de-correlation residuals where an imager with a similar level of performance would fail. This creates the

Published
2024

13. The Baryon Oscillation Spectroscopic Survey of SDSS-III

Author

Dawson, Kyle S., Schlegel, David J., Ahn, Christopher P., Anderson, Scott F., Aubourg, Éric, Bailey, Stephen, Barkhouser, Robert H., Bautista, Julian E., Beifiori, Alessandra, Berlind, Andreas A., Bhardwaj, Vaishali, Bizyaev, Dmitry, Blake, Cullen H., Blanton, Michael R., Blomqvist, Michael, Bolton, Adam S., Borde, Arnaud, Bovy, Jo, Brandt, W. N., Brewington, Howard, Brinkmann, Jon, Brown, Peter J., Brownstein, Joel R., Bundy, Kevin, Busca, N. G., Carithers, William, Carnero, Aurelio R., Carr, Michael A., Chen, Yanmei, Comparat, Johan, Connolly, Natalia, Cope, Frances, Croft, Rupert A. C., Cuesta, Antonio J., da Costa, Luiz N., Davenport, James R. A., Delubac, Timothée, de Putter, Roland, Dhital, Saurav, Ealet, Anne, Ebelke, Garrett L., Eisenstein, Daniel J., Escoffier, S., Fan, Xiaohui, Ak, N. Filiz, Finley, Hayley, Font-Ribera, Andreu, Génova-Santos, R., Gunn, James E., Guo, Hong, Haggard, Daryl, Hall, Patrick B., Hamilton, Jean-Christophe, Harris, Ben, Harris, David W., Ho, Shirley, Hogg, David W., Holder, Diana, Honscheid, Klaus, Huehnerhoff, Joe, Jordan, Beatrice, Jordan, Wendell P., Kauffmann, Guinevere, Kazin, Eyal A., Kirkby, David, Klaene, Mark A., Kneib, Jean-Paul, Goff, Jean-Marc Le, Lee, Khee-Gan, Long, Daniel C., Loomis, Craig P., Lundgren, Britt, Lupton, Robert H., Maia, Marcio A. G., Makler, Martin, Malanushenko, Elena, Malanushenko, Viktor, Mandelbaum, Rachel, Manera, Marc, Maraston, Claudia, Margala, Daniel, Masters, Karen L., McBride, Cameron K., McDonald, Patrick, McGreer, Ian D., McMahon, Richard, Mena, Olga, Miralda-Escudé, Jordi, Montero-Dorta, Antonio D., Montesano, Francesco, Muna, Demitri, Myers, Adam D., Naugle, Tracy, Nichol, Robert C., Noterdaeme, Pasquier, Nuza, Sebastián E., Olmstead, Matthew D., Oravetz, Audrey, Oravetz, Daniel J., Owen, Russell, Padmanabhan, Nikhil, Palanque-Delabrouille, Nathalie, Pan, Kaike, Parejko, John K., Pâris, Isabelle, Percival, Will J., Pérez-Fournon, Ismael, Pérez-Ràfols, Ignasi, Petitjean, Patrick, Pfaffenberger, Robert, Pforr, Janine, Pieri, Matthew M., Prada, Francisco, Price-Whelan, Adrian M., Raddick, M. Jordan, Rebolo, Rafael, Rich, James, Richards, Gordon T., Rockosi, Constance M., Roe, Natalie A., Ross, Ashley J., Ross, Nicholas P., Rossi, Graziano, Rubiño-Martin, J. A., Samushia, Lado, Sánchez, Ariel G., Sayres, Conor, Schmidt, Sarah J., Schneider, Donald P., Scóccola, C. G., Seo, Hee-Jong, Shelden, Alaina, Sheldon, Erin, Shen, Yue, Shu, Yiping, Slosar, Anže, Smee, Stephen A., Snedden, Stephanie A., Stauffer, Fritz, Steele, Oliver, Strauss, Michael A., Streblyanska, Alina, Suzuki, Nao, Swanson, Molly E. C., Tal, Tomer, Tanaka, Masayuki, Thomas, Daniel, Tinker, Jeremy L., Tojeiro, Rita, Tremonti, Christy A., Magana, M. Vargas, Verde, Licia, Viel, Matteo, Wake, David A., Watson, Mike, Weaver, Benjamin A., Weinberg, David H., Weiner, Benjamin J., West, Andrew A., White, Martin, Wood-Vasey, W. M., Yeche, Christophe, Zehavi, Idit, Zhao, Gong-Bo, and Zheng, Zheng

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger volume than the combined efforts of all previous spectroscopic surveys of large scale structure. BOSS uses 1.5 million luminous galaxies as faint as i=19.9 over 10,000 square degrees to measure BAO to redshifts z<0.7. Observations of neutral hydrogen in the Lyman alpha forest in more than 150,000 quasar spectra (g<22) will constrain BAO over the redshift range 2.15

Published
2012
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14. The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey

Author

Collaboration, SDSS-III, Ahn, Christopher P., Alexandroff, Rachael, Prieto, Carlos Allende, Anderson, Scott F., Anderton, Timothy, Andrews, Brett H., Bailey, Éric Aubourg Stephen, Barnes, Rory, Bautista, Julian, Beers, Timothy C., Beifiori, Alessandra, Berlind, Andreas A., Bhardwaj, Vaishali, Bizyaev, Dmitry, Blake, Cullen H., Blanton, Michael R., Blomqvist, Michael, Bochanski, John J., Bolton, Adam S., Borde, Arnaud, Bovy, Jo, Brandt, W. N., Brinkmann, J., Brown, Peter J., Brownstein, Joel R., Bundy, Kevin, Busca, N. G., Carithers, William, Carnero, Aurelio R., Carr, Michael A., Casetti-Dinescu, Dana I., Chen, Yanmei, Chiappini, Cristina, Comparat, Johan, Connolly, Natalia, Crepp, Justin R., Cristiani, Stefano, Croft, Rupert A. C., Cuesta, Antonio J., da Costa, Luiz N., Davenport, James R. A., Dawson, Kyle S., de Putter, Roland, De Lee, Nathan, Delubac, Timothée, Dhital, Saurav, Ealet, Anne, Ebelke, Garrett L., Edmondson, Edward M., Eisenstein, Daniel J., Escoffier, S., Esposito, Massimiliano, Evans, Michael L., Fan, Xiaohui, Castellá, Bruno Femení a, Alvar, Emma Fernández, Ferreira, Leticia D., Ak, N. Filiz, Finley, Hayley, Fleming, Scott W., Font-Ribera, Andreu, Frinchaboy, Peter M., García-Hernández, D. A., Pérez, A. E. García, Ge, Jian, Génova-Santos, R., Gillespie, Bruce A., Girardi, Léo, Hernández, Jonay I. González, Grebel, Eva K., Gunn, James E., Haggard, Daryl, Hamilton, Jean-Christophe, Harris, David W., Hawley, Suzanne L., Hearty, Frederick R., Ho, Shirley, Hogg, David W., Holtzman, Jon A., Honscheid, Klaus, Huehnerhoff, J., Ivans, Inese I., Ivezić, Zeljko, Jacobson, Heather R., Jiang, Linhua, Johansson, Jonas, Johnson, Jennifer A., Kauffmann, Guinevere, Kirkby, David, Kirkpatrick, Jessica A., Klaene, Mark A., Knapp, Gillian R., Kneib, Jean-Paul, Goff, Jean-Marc Le, Leauthaud, Alexie, Lee, Khee-Gan, Lee, Young Sun, Long, Daniel C., Loomis, Craig P., Lucatello, Sara, Lundgren, Britt, Lupton, Robert H., Ma, Bo, Ma, Zhibo, MacDonald, Nicholas, Mahadevan, Suvrath, Maia, Marcio A. G., Majewski, Steven R., Makler, Martin, Malanushenko, Elena, Malanushenko, Viktor, Manchado, A., Mandelbaum, Rachel, Manera, Marc, Maraston, Claudia, Margala, Daniel, Martell, Sarah L., McBride, Cameron K., McGreer, Ian D., McMahon, Richard G., Ménard, Brice, Meszaros, Sz., Miralda-Escudé, Jordi, Montero-Dorta, Antonio D., Montesano, Francesco, Morrison, Heather L., Muna, Demitri, Munn, Jeffrey A., Murayama, Hitoshi, Myers, Adam D., Neto, A. F., Nguyen, Duy Cuong, Nichol, Robert C., Nidever, David L., Noterdaeme, Pasquier, Ogando, Ricardo L. C., Olmstead, Matthew D., Oravetz, Daniel J., Owen, Russell, Padmanabhan, Nikhil, Palanque-Delabrouille, Nathalie, Pan, Kaike, Parejko, John K., Parihar, Prachi, Pâris, Isabelle, Pattarakijwanich, Petchara, Pepper, Joshua, Percival, Will J., Pérez-Fournon, Ismael, Pérez-Ráfols, Ignasi, Petitjean, Patrick, Pforr, Janine, Pieri, Matthew M., Pinsonneault, Marc H., de Mello, G. F. Porto, Prada, Francisco, Price-Whelan, Adrian M., Raddick, M. Jordan, Rebolo, Rafael, Rich, James, Richards, Gordon T., Robin, Annie C., Rocha-Pinto, Helio J., Rockosi, Constance M., Roe, Natalie A., Ross, Ashley J., Ross, Nicholas P., Rubiño-Martin, J. A., Samushia, Lado, Almeida, J. Sanchez, Sánchez, Ariel G., Santiago, Basílio, Sayres, Conor, Schlegel, David J., Schlesinger, Katharine J., Schmidt, Sarah J., Schneider, Donald P., Schwope, Axel D., Scóccola, C. G., Seljak, Uros, Sheldon, Erin, Shen, Yue, Shu, Yiping, Simmerer, Jennifer, Simmons, Audrey E., Skibba, Ramin A., Slosar, A., Sobreira, Flavia, Sobeck, Jennifer S., Stassun, Keivan G., Steele, Oliver, Steinmetz, Matthias, Strauss, Michael A., Swanson, Molly E. C., Tal, Tomer, Thakar, Aniruddha R., Thomas, Daniel, Thompson, Benjamin A., Tinker, Jeremy L., Tojeiro, Rita, Tremonti, Christy A., Magaña, M. Vargas, Verde, Licia, Viel, Matteo, Vikas, Shailendra K., Vogt, Nicole P., Wake, David A., Wang, Ji, Weaver, Benjamin A., Weinberg, David H., Weiner, Benjamin J., West, Andrew A., White, Martin, Wilson, John C., Wisniewski, John P., Wood-Vasey, W. M., Yanny, Brian, Yèche, Christophe, York, Donald G., Zamora, O., Zasowski, Gail, Zehavi, Idit, Zhao, Gong-Bo, Zheng, Zheng, Zhu, Guangtun, and Zinn, Joel C.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9) of the SDSS project includes 535,995 new galaxy spectra (median z=0.52), 102,100 new quasar spectra (median z=2.32), and 90,897 new stellar spectra, along with the data presented in previous data releases. These spectra were obtained with the new BOSS spectrograph and were taken between 2009 December and 2011 July. In addition, the stellar parameters pipeline, which determines radial velocities, surface temperatures, surface gravities, and metallicities of stars, has been updated and refined with improvements in temperature estimates for stars with T_eff<5000 K and in metallicity estimates for stars with [Fe/H]>-0.5. DR9 includes new stellar parameters for all stars presented in DR8, including stars from SDSS-I and II, as well as those observed as part of the SDSS-III Sloan Extension for Galactic Understanding and Exploration-2 (SEGUE-2). The astrometry error introduced in the DR8 imaging catalogs has been corrected in the DR9 data products. The next data release for SDSS-III will be in Summer 2013, which will present the first data from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) along with another year of data from BOSS, followed by the final SDSS-III data release in December 2014., Comment: 9 figures; 2 tables. Submitted to ApJS. DR9 is available at http://www.sdss3.org/dr9

Published
2012
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15. The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function

Author

Sanchez, Ariel G., Scoccola, C. G., Ross, A. J., Percival, W., Manera, M., Montesano, F., Mazzalay, X., Cuesta, A. J., Eisenstein, D. J., Kazin, E., McBride, C. K., Mehta, K., Montero-Dorta, A. D., Padmanabhan, N., Prada, F., Rubino-Martin, J. A., Tojeiro, R., Xu, X., Magana, M. Vargas, Aubourg, E., Bahcall, N. A., Bailey, S., Bizyaev, D., Bolton, A. S., Brewington, H., Brinkmann, J., Brownstein, J. R., Gott III, J. Richard, Hamilton, J. C., Ho, S., Honscheid, K., Labatie, A., Malanushenko, E., Malanushenko, V., Maraston, C., Muna, D., Nichol, R. C., Oravetz, D., Pan, K., Ross, N. P., Roe, N. A., Reid, B. A., Schlegel, D. J., Shelden, A., Schneider, D. P., Simmons, A., Skibba, R., Snedden, S., Thomas, D., Tinker, J., Wake, D. A., Weaver, B. A., Weinberg, David H., White, Martin, Zehavi, I., and Zhao, G.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We obtain constraints on cosmological parameters from the spherically averaged redshift-space correlation function of the CMASS Data Release 9 (DR9) sample of the Baryonic Oscillation Spectroscopic Survey (BOSS). We combine this information with additional data from recent CMB, SN and BAO measurements. Our results show no significant evidence of deviations from the standard flat-Lambda CDM model, whose basic parameters can be specified by Omega_m = 0.285 +- 0.009, 100 Omega_b = 4.59 +- 0.09, n_s = 0.96 +- 0.009, H_0 = 69.4 +- 0.8 km/s/Mpc and sigma_8 = 0.80 +- 0.02. The CMB+CMASS combination sets tight constraints on the curvature of the Universe, with Omega_k = -0.0043 +- 0.0049, and the tensor-to-scalar amplitude ratio, for which we find r < 0.16 at the 95 per cent confidence level (CL). These data show a clear signature of a deviation from scale-invariance also in the presence of tensor modes, with n_s <1 at the 99.7 per cent CL. We derive constraints on the fraction of massive neutrinos of f_nu < 0.049 (95 per cent CL), implying a limit of sum m_nu < 0.51 eV. We find no signature of a deviation from a cosmological constant from the combination of all datasets, with a constraint of w_DE = -1.033 +- 0.073 when this parameter is assumed time-independent, and no evidence of a departure from this value when it is allowed to evolve as w_DE(a) = w_0 + w_a (1 - a). The achieved accuracy on our cosmological constraints is a clear demonstration of the constraining power of current cosmological observations., Comment: 26 pages, 15 figures. Minor changes to match version accepted by MNRAS

Published
2012
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16. DQ white-dwarf stars with low C abundance: Possible progenitors

Author

Scóccola, C. G., Althaus, L. G., Serenelli, A. M., Rohrmann, R. D., and Córsico, A. H.

Subjects
Astrophysics
Abstract

The present paper focuses on the evolution of hydrogen-deficient white dwarfs with the aim of exploring the consequences of different initial envelope structures on the carbon abundances expected in helium-rich, carbon-contaminated DQ white dwarfs. In particular, the evolutionary link between the DQs with low detected carbon abundances and the PG1159, extreme horizontal branch, and helium-rich R Coronae Borealis (RCrB) stars is explored. We present full evolutionary calculations that take a self-consistent treatment of element diffusion into account as well as expectations for the outer layer chemical stratification of progenitor stars upon entering the white dwarf regime. We find that PG1159 stars cannot be related to any DQ white dwarfs with low C abundances. Instead, we suggest that the latter could constitute the progeny of the giant, helium-rich RCrB stars., Comment: 10 pages, 10 figures. Accepted for publication in Astronomy and Astrophysics

Published
2006
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17. The formation and evolution of hydrogen-deficient post-AGB white dwarfs: the emerging chemical profile and the expectations for the PG1159-DB-DQ evolutionary connection

Author

Althaus, L. G., Serenelli, A. M., Panei, J. A., Corsico, A. H., Garcia-Berro, E., and Scoccola, C. G.

Subjects
Astrophysics
Abstract

This paper is designed to explore the formation and evolution of hydrogen-deficient post-AGB white dwarfs. To this end, we compute the complete evolution of an initially 2.7 M_sun star from the zero-age main sequence through the thermally pulsing and mass-loss phases to the white dwarf stage. Particular attention is given to the chemical abundance changes during the whole evolution. A time-dependent scheme for the simultaneous treatment of abundance changes caused by nuclear reactions, diffusive overshooting, salt fingers and convection is considered. We employed the double-diffusive mixing-length theory of convection for fluids with composition gradients (Grossman & Taam 1996). The study can therefore be considered as a test of its performance in low-mass stars. Also, time-dependent element diffusion for multicomponent gases is taken into account during the white dwarf evolution. The evolutionary stages corresponding to the last helium thermal pulse on the early white-dwarf cooling branch and the following born-again episode are carefully explored. Relevant aspects for PG1159 stars and DB white dwarf evolution are studied in the frame of these new evolutionary models that take into account the history of the white dwarf progenitor. The scope of the calculations is extended to the domain of the helium-rich, carbon-contaminated DQ white dwarfs with the aim of exploring the plausibility of the evolutionary connection PG1159-DB-DQ. In this regard, the implications for the double-layered chemical structure in pulsating DB white dwarfs is investigated. Another aspect of the investigation concerned the consequences of mass-loss episodes during the PG1159 stage for the chemical stratification of the outer layer of DB and DQ white dwarfs., Comment: 20 pages, 15 figures. Accepted by Astronomy & Astrophysics

Published
2005
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18. Qubic: the q and u bolometric interferometer for cosmology

Author

Zmuidzinas, J, Gao, JR, Piat, M, Battistelli, E, De Bernardis, P, Dalessandro, G, De Petris, M, Grandsire, L, Hamilton, J, Hoang, T, Marnieros, S, Masi, S, Mennella, A, Mousset, L, Osullivan, C, Prele, D, Stankowiak, G, Tartari, A, Thermeau, J, Torchinsky, S, Voisin, F, Zannoni, M, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Belier, B, Bau, A, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Burke, D, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, De Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Gamboa Lerena, M, Ganga, K, Garcia, B, Garcia Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Hampel, M, Harari, D, Henrot-Versille, S, Incardona, F, Jules, E, Kaplan, J, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Maffei, B, Marty, W, Mattei, A, May, A, Mcculloch, M, Mele, L, Melo, D, Montier, L, Mundo, L, Murphy, J, Nati, F, Olivicri, E, Oriol, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perciballi, M, Pezzotta, F, Piacentini, F, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Puddu, R, Rambaud, D, Rasztocky, E, Ringegni, P, Romero, G, Salum, J, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Supanitsky, A, Timbie, P, Tomasi, M, Tucker, C, Tucker, G, Vigano, D, Vittorio, N, Wicek, F, Wright, M, Zullo, A, Piat M., Battistelli E. S., De Bernardis P., Dalessandro G., De Petris M., Grandsire L., Hamilton J. -C., Hoang T. D., Marnieros S., Masi S., Mennella A., Mousset L., Osullivan C., Prele D., Stankowiak G., Tartari A., Thermeau J. -P., Torchinsky S. A., Voisin F., Zannoni M., Ade P., Alberro J. G., Almela A., Amico G., Arnaldi L. H., Auguste D., Aumont J., Azzoni S., Banfi S., Belier B., Bau A., Bennett D., Berge L., Bernard J. -Ph., Bersanelli M., Bigot-Sazy M. -A., Bonaparte J., Bonis J., Bunn E., Burke D., Buzi D., Cavaliere F., Chanial P., Chapron C., Charlassier R., Cobos Cerutti A. C., Columbro F., Coppolecchia A., De Gasperis G., De Leo M., Dheilly S., Duca C., Dumoulin L., Etchegoyen A., Fasciszewski A., Ferreyro L. P., Fracchia D., Franceschet C., Gamboa Lerena M. M., Ganga K. M., Garcia B., Garcia Redondo M. E., Gaspard M., Gayer D., Gervasi M., Giard M., Gilles V., Giraud-Heraud Y., Gomez Berisso M., Gonzalez M., Gradziel M., Hampel M. R., Harari D., Henrot-Versille S., Incardona F., Jules E., Kaplan J., Kristukat C., Lamagna L., Loucatos S., Louis T., Maffei B., Marty W., Mattei A., May A., McCulloch M., Mele L., Melo D., Montier L., Mundo L. M., Murphy J. A., Murphy J. D., Nati F., Olivicri E., Oriol C., Paiella A., Pajot F., Passerini A., Pastoriza H., Pelosi A., Perbost C., Perciballi M., Pezzotta F., Piacentini F., Piccirillo L., Pisano G., Platino M., Polenta G., Puddu R., Rambaud D., Rasztocky E., Ringegni P., Romero G. E., Salum J. M., Schillaci A., Scoccola C. G., Scully S., Spinelli S., Stolpovskiy M., Supanitsky A. D., Timbie P., Tomasi M., Tucker C., Tucker G., Vigano D., Vittorio N., Wicek F., Wright M., Zullo A., Zmuidzinas, J, Gao, JR, Piat, M, Battistelli, E, De Bernardis, P, Dalessandro, G, De Petris, M, Grandsire, L, Hamilton, J, Hoang, T, Marnieros, S, Masi, S, Mennella, A, Mousset, L, Osullivan, C, Prele, D, Stankowiak, G, Tartari, A, Thermeau, J, Torchinsky, S, Voisin, F, Zannoni, M, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Belier, B, Bau, A, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Burke, D, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, De Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Gamboa Lerena, M, Ganga, K, Garcia, B, Garcia Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Hampel, M, Harari, D, Henrot-Versille, S, Incardona, F, Jules, E, Kaplan, J, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Maffei, B, Marty, W, Mattei, A, May, A, Mcculloch, M, Mele, L, Melo, D, Montier, L, Mundo, L, Murphy, J, Nati, F, Olivicri, E, Oriol, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perciballi, M, Pezzotta, F, Piacentini, F, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Puddu, R, Rambaud, D, Rasztocky, E, Ringegni, P, Romero, G, Salum, J, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Supanitsky, A, Timbie, P, Tomasi, M, Tucker, C, Tucker, G, Vigano, D, Vittorio, N, Wicek, F, Wright, M, Zullo, A, Piat M., Battistelli E. S., De Bernardis P., Dalessandro G., De Petris M., Grandsire L., Hamilton J. -C., Hoang T. D., Marnieros S., Masi S., Mennella A., Mousset L., Osullivan C., Prele D., Stankowiak G., Tartari A., Thermeau J. -P., Torchinsky S. A., Voisin F., Zannoni M., Ade P., Alberro J. G., Almela A., Amico G., Arnaldi L. H., Auguste D., Aumont J., Azzoni S., Banfi S., Belier B., Bau A., Bennett D., Berge L., Bernard J. -Ph., Bersanelli M., Bigot-Sazy M. -A., Bonaparte J., Bonis J., Bunn E., Burke D., Buzi D., Cavaliere F., Chanial P., Chapron C., Charlassier R., Cobos Cerutti A. C., Columbro F., Coppolecchia A., De Gasperis G., De Leo M., Dheilly S., Duca C., Dumoulin L., Etchegoyen A., Fasciszewski A., Ferreyro L. P., Fracchia D., Franceschet C., Gamboa Lerena M. M., Ganga K. M., Garcia B., Garcia Redondo M. E., Gaspard M., Gayer D., Gervasi M., Giard M., Gilles V., Giraud-Heraud Y., Gomez Berisso M., Gonzalez M., Gradziel M., Hampel M. R., Harari D., Henrot-Versille S., Incardona F., Jules E., Kaplan J., Kristukat C., Lamagna L., Loucatos S., Louis T., Maffei B., Marty W., Mattei A., May A., McCulloch M., Mele L., Melo D., Montier L., Mundo L. M., Murphy J. A., Murphy J. D., Nati F., Olivicri E., Oriol C., Paiella A., Pajot F., Passerini A., Pastoriza H., Pelosi A., Perbost C., Perciballi M., Pezzotta F., Piacentini F., Piccirillo L., Pisano G., Platino M., Polenta G., Puddu R., Rambaud D., Rasztocky E., Ringegni P., Romero G. E., Salum J. M., Schillaci A., Scoccola C. G., Scully S., Spinelli S., Stolpovskiy M., Supanitsky A. D., Timbie P., Tomasi M., Tucker C., Tucker G., Vigano D., Vittorio N., Wicek F., Wright M., and Zullo A.

Abstract

QUBIC (Q and U bolometric interferometer for cosmology) is an international ground-based experiment dedicated to the measurement of the polarized fluctuations of the cosmic microwave background (CMB). It is based on bolometric interferometry, an original detection technique which combines the immunity to systematic effects of an interferometer with the sensitivity of low temperature incoherent detectors. QUBIC will be deployed in Argentina, at the Alto Chorrillos mountain site near San Antonio de los Cobres, in the Salta province. The QUBIC detection chain consists of 2048 NbSi transition edge sensors (TESs) cooled to 320 mK. The voltage-biased TESs are read out with time domain multiplexing based on superconducting quantum interference devices (SQUIDs) at 1 K and a novel SiGe application-specific integrated circuit (ASIC) at 60 K allowing an unprecedented multiplexing (MUX) factor equal to 128 to be reached. The current QUBIC version is based on a reduced number of detectors (1/4) in order to validate the detection technique. The QUBIC experiment is currently being validated in the lab in Salta (Argentina) before going to the site for observations. This paper presents the main results of the characterization phase with a focus on the detectors and readout system.

Published
2022

19. The QUBIC experiment

Author

Auge E.,Dumarchez J.,Tran Thanh Van J., D'Alessandro, G, Ade, P, Amico, G, Auguste, D, Aumont, J, Banfi, S, Barbarin, G, Battaglia, P, Battistelli, E, Bau, A, Belier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bonaparte, J, Bonis, J, Bordier, G, Breelle, E, Bunn, E, Burke, D, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, Couchot, F, D'Agostino, R, de Bernardis, P, de Gasperis, G, de Leo, M, de Petris, M, Di Donato, A, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Franceschet, C, Gamboa Lerena, M, Garcia, B, Garrido, X, Gaspard, M, Gault, A, Gayer, D, Gervasi, M, Giard, M, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Guerrard, E, Hamilton, J, Harari, D, Haynes, V, Henrot-Versille, S, Hoang, D, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Lowitz, A, Lukovic, V, Luterstein, R, Maffei, B, Marnieros, S, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mennella, A, Montier, L, Mundo, L, Murphy, J, O'Sullivan, C, Olivieri, E, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perdereau, O, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Polenta, G, Prele, D, Puddu, R, Rambaud, D, Ringegni, P, Romero, G, Salatino, M, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Suarez, F, Tartari, A, Thermeau, J, Timbie, P, Torchinsky, S, Tristram, M, Truongcanh, V, Tucker, G, Tucker, C, Vanneste, S, Vigano, D, Vittorio, N, Voisin, F, Watson, B, Wicek, F, Zannoni, M, Zullo, A, D'Alessandro G., Ade P., Amico G., Auguste D., Aumont J., Banfi S., Barbarin G., Battaglia P., Battistelli E., Bau A., Belier B., Bennett D., Berge L., Bernard J. -Ph., Bersanelli M., Bigot-Sazy M. -A., Bleurvacq N., Bonaparte J., Bonis J., Bordier G., Breelle E., Bunn E., Burke D., Buzi D., Buzzelli A., Cavaliere F., Chanial P., Chapron C., Charlassier R., Columbro F., Coppi G., Coppolecchia A., Couchot F., D'Agostino R., de Bernardis P., de Gasperis G., de Leo M., de Petris M., Di Donato A., Dumoulin L., Etchegoyen A., Fasciszewski A., Franceschet C., Gamboa Lerena M. M., Garcia B., Garrido X., Gaspard M., Gault A., Gayer D., Gervasi M., Giard M., Giraud-Heraud Y., Gomez Berisso M., Gonzalez M., Gradziel M., Grandsire L., Guerrard E., Hamilton J. -Ch., Harari D., Haynes V., Henrot-Versille S., Hoang D. T., Incardona F., Jules E., Kaplan J., Korotkov A., Kristukat C., Lamagna L., Loucatos S., Louis T., Lowitz A., Lukovic V., Luterstein R., Maffei B., Marnieros S., Masi S., Mattei A., May A., McCulloch M., Medina M. C., Mele L., Melhuish S., Mennella A., Montier L., Mundo L. M., Murphy J. A., Murphy J. D., O'Sullivan C., Olivieri E., Paiella A., Pajot F., Passerini A., Pastoriza H., Pelosi A., Perbost C., Perdereau O., Pezzotta F., Piacentini F., Piat M., Piccirillo L., Pisano G., Polenta G., Prele D., Puddu R., Rambaud D., Ringegni P., Romero G. E., Salatino M., Schillaci A., Scoccola C. G., Scully S., Spinelli S., Stolpovskiy M., Suarez F., Tartari A., Thermeau J. -P., Timbie P., Torchinsky S. A., Tristram M., Truongcanh V., Tucker G., Tucker C., Vanneste S., Vigano D., Vittorio N., Voisin F., Watson B., Wicek F., Zannoni M., Zullo A., Auge E.,Dumarchez J.,Tran Thanh Van J., D'Alessandro, G, Ade, P, Amico, G, Auguste, D, Aumont, J, Banfi, S, Barbarin, G, Battaglia, P, Battistelli, E, Bau, A, Belier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bonaparte, J, Bonis, J, Bordier, G, Breelle, E, Bunn, E, Burke, D, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, Couchot, F, D'Agostino, R, de Bernardis, P, de Gasperis, G, de Leo, M, de Petris, M, Di Donato, A, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Franceschet, C, Gamboa Lerena, M, Garcia, B, Garrido, X, Gaspard, M, Gault, A, Gayer, D, Gervasi, M, Giard, M, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Guerrard, E, Hamilton, J, Harari, D, Haynes, V, Henrot-Versille, S, Hoang, D, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Lowitz, A, Lukovic, V, Luterstein, R, Maffei, B, Marnieros, S, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mennella, A, Montier, L, Mundo, L, Murphy, J, O'Sullivan, C, Olivieri, E, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perdereau, O, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Polenta, G, Prele, D, Puddu, R, Rambaud, D, Ringegni, P, Romero, G, Salatino, M, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Suarez, F, Tartari, A, Thermeau, J, Timbie, P, Torchinsky, S, Tristram, M, Truongcanh, V, Tucker, G, Tucker, C, Vanneste, S, Vigano, D, Vittorio, N, Voisin, F, Watson, B, Wicek, F, Zannoni, M, Zullo, A, D'Alessandro G., Ade P., Amico G., Auguste D., Aumont J., Banfi S., Barbarin G., Battaglia P., Battistelli E., Bau A., Belier B., Bennett D., Berge L., Bernard J. -Ph., Bersanelli M., Bigot-Sazy M. -A., Bleurvacq N., Bonaparte J., Bonis J., Bordier G., Breelle E., Bunn E., Burke D., Buzi D., Buzzelli A., Cavaliere F., Chanial P., Chapron C., Charlassier R., Columbro F., Coppi G., Coppolecchia A., Couchot F., D'Agostino R., de Bernardis P., de Gasperis G., de Leo M., de Petris M., Di Donato A., Dumoulin L., Etchegoyen A., Fasciszewski A., Franceschet C., Gamboa Lerena M. M., Garcia B., Garrido X., Gaspard M., Gault A., Gayer D., Gervasi M., Giard M., Giraud-Heraud Y., Gomez Berisso M., Gonzalez M., Gradziel M., Grandsire L., Guerrard E., Hamilton J. -Ch., Harari D., Haynes V., Henrot-Versille S., Hoang D. T., Incardona F., Jules E., Kaplan J., Korotkov A., Kristukat C., Lamagna L., Loucatos S., Louis T., Lowitz A., Lukovic V., Luterstein R., Maffei B., Marnieros S., Masi S., Mattei A., May A., McCulloch M., Medina M. C., Mele L., Melhuish S., Mennella A., Montier L., Mundo L. M., Murphy J. A., Murphy J. D., O'Sullivan C., Olivieri E., Paiella A., Pajot F., Passerini A., Pastoriza H., Pelosi A., Perbost C., Perdereau O., Pezzotta F., Piacentini F., Piat M., Piccirillo L., Pisano G., Polenta G., Prele D., Puddu R., Rambaud D., Ringegni P., Romero G. E., Salatino M., Schillaci A., Scoccola C. G., Scully S., Spinelli S., Stolpovskiy M., Suarez F., Tartari A., Thermeau J. -P., Timbie P., Torchinsky S. A., Tristram M., Truongcanh V., Tucker G., Tucker C., Vanneste S., Vigano D., Vittorio N., Voisin F., Watson B., Wicek F., Zannoni M., and Zullo A.

Abstract

The Q & U Bolometric Interferometer for Cosmology (QUBIC) is a cosmology experiment which aims to measure the B-mode polarization of the Cosmic Microwave Background (CMB). Measurements of the primordial B-mode pattern of the CMB polarization is in fact among the most exciting goals in cosmology as it would allow testing the inflationary paradigm, an exponential expansion occurred during the first 10−33 seconds of the Universe age. A large number of experiments are attempting to measure the B-modes, from the ground and from the stratosphere using classic imaging techniques. The QUBIC collaboration is developing an innovative concept to measure CMB polarization implementing bolometric interferometry which mixes the high sensitivity of bolometric detectors with an accurate systematics control due to the interferometric nature of the experiment. QUBIC is at an advanced state of tests on all sub-systems and we are planning to start with measurements by the end of 2018 from Alto Chorillo in Argentina.

Published
2020

20. Optical modelling and analysis of the Q and U bolometric interferometer for cosmology

Author

Sadwick L.P.,Yang T., Burke, D, Gayer, D, Kalinauskaite, E, O'Sullivan, C, Murphy, J, Scully, S, De Petris, M, De Leo, M, Mennella, A, Torchinsky, S, Zannoni, M, Amico, G, Auguste, D, Aumont, J, Banfi, S, Barbaran, G, Battaglia, P, Battistelli, E, Bau, A, Belier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvac, N, Bonaparte, J, Bonis, J, Bordier, G, Breelle, E, Bunn, E, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, Couchot, F, D'Alessandro, G, D'Agostino, R, De Bernardis, P, De Gasperis, G, Di Donato, A, Drilien, A, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Franceschet, C, Gamboa-Lerena, M, Garcia, B, Garrido, X, Gaspard, M, Gault, A, Gervasi, M, Giard, M, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Guerrard, E, Hamilton, J, Harari, D, Haynes, V, Henrot-Versille, S, Hoang, D, Holtzer, N, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Lande, J, Loucatos, S, Louis, T, Lowitz, A, Lukovic, V, Luterstein, R, Maffei, B, Marnieros, S, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mundo, L, Montier, L, Neel, D, Olivieri, E, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perdereau, O, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Polenta, G, Prele, D, Puddu, R, Rambaud, D, Rigaut, O, Ringegni, P, Romero, G, Salatino, M, Schillaci, A, Scoccola, C, Spinelli, S, Stolpovskiy, M, Suarez, F, Tartari, A, Thermeau, J, Timbie, P, Tristram, M, Truongcanh, V, Tucker, G, Tucker, C, Vigano, D, Vittorio, N, Voisin, F, Watson, B, Wicek, F, Zullo, A, Burke D., Gayer D., Kalinauskaite E., O'Sullivan C., Murphy J. D., Scully S. P., De Petris M., De Leo M., Mennella A., Torchinsky S. A., Zannoni M., Amico G., Auguste D., Aumont J., Banfi S., Barbaran G., Battaglia P., Battistelli E., Bau A., Belier B., Bennett D. G., Berge L., Bernard J. -P., Bersanelli M., Bigot-Sazy M. -A., Bleurvac N., Bonaparte J., Bonis J., Bordier G., Breelle E., Bunn E. F., Buzi D., Buzzelli A., Cavaliere F., Chanial P., Chapron C., Charlassier R., Columbro F., Coppi G., Coppolecchia A., Couchot F., D'Alessandro G., D'Agostino R., De Bernardis P., De Gasperis G., Di Donato A., Drilien A. -A., Dumoulin L., Etchegoyen A., Fasciszewski A., Franceschet C., Gamboa-Lerena M., Garcia B., Garrido X., Gaspard M., Gault A., Gervasi M., Giard M., Giraud-Heraud Y., Gomez Berisso M., Gonzalez M., Gradziel M. L., Grandsire L., Guerrard E., Hamilton J. -C., Harari D., Haynes V., Henrot-Versille S., Hoang D. T., Holtzer N., Incardona F., Jules E., Kaplan J., Korotkov A. L., Kristukat C., Lamagna L., Lande J., Loucatos S., Louis T., Lowitz A., Lukovic V., Luterstein R., Maffei B., Marnieros S., Masi S., Mattei A., May A. J., McCulloch M. A., Medina M. C., Mele L., Melhuish S. J., Mundo L., Montier L., Murphy J. A., Neel D., Olivieri E., Paiella A., Pajot F., Passerini A., Pastoriza H., Pelosi A., Perbost C., Perdereau O., Pezzotta F., Piacentini F., Piat M. R., Piccirillo L., Pisano G., Polenta G., Prele D., Puddu R., Rambaud D., Rigaut O., Ringegni P., Romero G. E., Salatino M., Schillaci A., Scoccola C. G., Spinelli S. M., Stolpovskiy M., Suarez F., Tartari A., Thermeau J. -P., Timbie P. T., Tristram M., Truongcanh V., Tucker G. S., Tucker C. E., Vigano D., Vittorio N., Voisin F., Watson B., Wicek F., Zullo A., Sadwick L.P.,Yang T., Burke, D, Gayer, D, Kalinauskaite, E, O'Sullivan, C, Murphy, J, Scully, S, De Petris, M, De Leo, M, Mennella, A, Torchinsky, S, Zannoni, M, Amico, G, Auguste, D, Aumont, J, Banfi, S, Barbaran, G, Battaglia, P, Battistelli, E, Bau, A, Belier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvac, N, Bonaparte, J, Bonis, J, Bordier, G, Breelle, E, Bunn, E, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, Couchot, F, D'Alessandro, G, D'Agostino, R, De Bernardis, P, De Gasperis, G, Di Donato, A, Drilien, A, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Franceschet, C, Gamboa-Lerena, M, Garcia, B, Garrido, X, Gaspard, M, Gault, A, Gervasi, M, Giard, M, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Guerrard, E, Hamilton, J, Harari, D, Haynes, V, Henrot-Versille, S, Hoang, D, Holtzer, N, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Lande, J, Loucatos, S, Louis, T, Lowitz, A, Lukovic, V, Luterstein, R, Maffei, B, Marnieros, S, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mundo, L, Montier, L, Neel, D, Olivieri, E, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perdereau, O, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Polenta, G, Prele, D, Puddu, R, Rambaud, D, Rigaut, O, Ringegni, P, Romero, G, Salatino, M, Schillaci, A, Scoccola, C, Spinelli, S, Stolpovskiy, M, Suarez, F, Tartari, A, Thermeau, J, Timbie, P, Tristram, M, Truongcanh, V, Tucker, G, Tucker, C, Vigano, D, Vittorio, N, Voisin, F, Watson, B, Wicek, F, Zullo, A, Burke D., Gayer D., Kalinauskaite E., O'Sullivan C., Murphy J. D., Scully S. P., De Petris M., De Leo M., Mennella A., Torchinsky S. A., Zannoni M., Amico G., Auguste D., Aumont J., Banfi S., Barbaran G., Battaglia P., Battistelli E., Bau A., Belier B., Bennett D. G., Berge L., Bernard J. -P., Bersanelli M., Bigot-Sazy M. -A., Bleurvac N., Bonaparte J., Bonis J., Bordier G., Breelle E., Bunn E. F., Buzi D., Buzzelli A., Cavaliere F., Chanial P., Chapron C., Charlassier R., Columbro F., Coppi G., Coppolecchia A., Couchot F., D'Alessandro G., D'Agostino R., De Bernardis P., De Gasperis G., Di Donato A., Drilien A. -A., Dumoulin L., Etchegoyen A., Fasciszewski A., Franceschet C., Gamboa-Lerena M., Garcia B., Garrido X., Gaspard M., Gault A., Gervasi M., Giard M., Giraud-Heraud Y., Gomez Berisso M., Gonzalez M., Gradziel M. L., Grandsire L., Guerrard E., Hamilton J. -C., Harari D., Haynes V., Henrot-Versille S., Hoang D. T., Holtzer N., Incardona F., Jules E., Kaplan J., Korotkov A. L., Kristukat C., Lamagna L., Lande J., Loucatos S., Louis T., Lowitz A., Lukovic V., Luterstein R., Maffei B., Marnieros S., Masi S., Mattei A., May A. J., McCulloch M. A., Medina M. C., Mele L., Melhuish S. J., Mundo L., Montier L., Murphy J. A., Neel D., Olivieri E., Paiella A., Pajot F., Passerini A., Pastoriza H., Pelosi A., Perbost C., Perdereau O., Pezzotta F., Piacentini F., Piat M. R., Piccirillo L., Pisano G., Polenta G., Prele D., Puddu R., Rambaud D., Rigaut O., Ringegni P., Romero G. E., Salatino M., Schillaci A., Scoccola C. G., Spinelli S. M., Stolpovskiy M., Suarez F., Tartari A., Thermeau J. -P., Timbie P. T., Tristram M., Truongcanh V., Tucker G. S., Tucker C. E., Vigano D., Vittorio N., Voisin F., Watson B., Wicek F., and Zullo A.

Abstract

Remnant radiation from the early universe, known as the Cosmic Microwave Background (CMB), has been redshifted and cooled, and today has a blackbody spectrum peaking at millimetre wavelengths. The QUBIC (Q&U Bolometric Interferometer for Cosmology) instrument is designed to map the very faint polaristion structure in the CMB. QUBIC is based on the novel concept of bolometric interferometry in conjunction with synthetic imaging. It will have a large array of input feedhorns, which creates a large number of interferometric baselines. The beam from each feedhorn is passed through an optical combiner, with an off-axis compensated Gregorian design, to allow the generation of the synthetic image. The optical-combiner will operate in two frequency bands (150 and 220 GHz with 25% and 18.2 % bandwidth respectively) while cryogenically cooled TES bolometers provide the sensitivity required at the image plane. The QUBIC Technical Demonstrator (TD), a proof of technology instrument that contains 64 input feed-horns, is currently being built and will be installed in the Alto Chorrillos region of Argentina. The plan is then for the full QUBIC instrument (400 feed-horns) to be deployed in Argentina and obtain cosmologically significant results. In this paper we will examine the output of the manufactered feed-horns in comparison to the nominal design. We will show the results of optical modelling that has been performed in anticipation of alignment and calibration of the TD in Paris, in particular testing the validity of real laboratory environments. We show the output of large calibrator sources (50 ° full width haf max Gaussian beams) and the importance of accurate mirror definitions when modelling large beams. Finally we describe the tolerance on errors of the position and orientation of mirrors in the optical combiner.

Published
2018

22. The Baryon Oscillation Spectroscopic Survery Of SDSS-III

Author

Dawson, Kyle, Génova-Santos, R., Pèrez-Fournon, Ismael, Rebolo López, Rafael, Rubiño-Martín, J. A., Scoccola, C. G., Streblyanska, Alina, Prada, Francisco, Mena, Olga, Dawson, Kyle, Génova-Santos, R., Pèrez-Fournon, Ismael, Rebolo López, Rafael, Rubiño-Martín, J. A., Scoccola, C. G., Streblyanska, Alina, Prada, Francisco, and Mena, Olga

Abstract

The Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger volume than the combined efforts of all previous spectroscopic surveys of large-scale structure. BOSS uses 1.5 million luminous galaxies as faint as i = 19.9 over 10,000 deg(2) to measure BAO to redshifts z < 0.7. Observations of neutral hydrogen in the Ly alpha forest in more than 150,000 quasar spectra (g < 22) will constrain BAO over the redshift range 2.15 < z < 3.5. Early results from BOSS include the first detection of the large-scale three-dimensional clustering of the Ly alpha forest and a strong detection from the Data Release 9 data set of the BAO in the clustering of massive galaxies at an effective redshift z = 0.57. We project that BOSS will yield measurements of the angular diameter distance d(A) to an accuracy of 1.0% at redshifts z = 0.3 and z = 0.57 and measurements of H(z) to 1.8% and 1.7% at the same redshifts. Forecasts for Ly alpha forest constraints predict a measurement of an overall dilation factor that scales the highly degenerate D-A(z) and H-1(z) parameters to an accuracy of 1.9% at z similar to 2.5 when the survey is complete. Here, we provide an overview of the selection of spectroscopic targets, planning of observations, and analysis of data and data quality of BOSS

Published
2013

23. The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Release 9 spectroscopic galaxy sample

Author

Anderson, L., primary, Aubourg, E., additional, Bailey, S., additional, Bizyaev, D., additional, Blanton, M., additional, Bolton, A. S., additional, Brinkmann, J., additional, Brownstein, J. R., additional, Burden, A., additional, Cuesta, A. J., additional, da Costa, L. A. N., additional, Dawson, K. S., additional, de Putter, R., additional, Eisenstein, D. J., additional, Gunn, J. E., additional, Guo, H., additional, Hamilton, J.-C., additional, Harding, P., additional, Ho, S., additional, Honscheid, K., additional, Kazin, E., additional, Kirkby, D., additional, Kneib, J.-P., additional, Labatie, A., additional, Loomis, C., additional, Lupton, R. H., additional, Malanushenko, E., additional, Malanushenko, V., additional, Mandelbaum, R., additional, Manera, M., additional, Maraston, C., additional, McBride, C. K., additional, Mehta, K. T., additional, Mena, O., additional, Montesano, F., additional, Muna, D., additional, Nichol, R. C., additional, Nuza, S. E., additional, Olmstead, M. D., additional, Oravetz, D., additional, Padmanabhan, N., additional, Palanque-Delabrouille, N., additional, Pan, K., additional, Parejko, J., additional, Paris, I., additional, Percival, W. J., additional, Petitjean, P., additional, Prada, F., additional, Reid, B., additional, Roe, N. A., additional, Ross, A. J., additional, Ross, N. P., additional, Samushia, L., additional, Sanchez, A. G., additional, Schlegel, D. J., additional, Schneider, D. P., additional, Scoccola, C. G., additional, Seo, H.-J., additional, Sheldon, E. S., additional, Simmons, A., additional, Skibba, R. A., additional, Strauss, M. A., additional, Swanson, M. E. C., additional, Thomas, D., additional, Tinker, J. L., additional, Tojeiro, R., additional, Magana, M. V., additional, Verde, L., additional, Wagner, C., additional, Wake, D. A., additional, Weaver, B. A., additional, Weinberg, D. H., additional, White, M., additional, Xu, X., additional, Yeche, C., additional, Zehavi, I., additional, and Zhao, G.-B., additional

Published
2012
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24. The QUBIC experiment

Author

D Alessandro, G., Ade, P., Amico, G., Auguste, D., Aumont, J., Banfi, S., Barbarín, G., Battaglia, P., Battistelli, E., Baù, A., Bélier, B., Bennett, D., Bergé, L., Bernard, J. -Ph, Bersanelli, M., Bigot-Sazy, M. -A, Bleurvacq, N., Bonaparte, J., Bonis, J., Bordier, G., Bréelle, E., Bunn, E., Burke, D., Buzi, D., Buzzelli, A., Cavaliere, F., Chanial, P., Chapron, C., Charlassier, R., Columbro, F., Coppi, G., Coppolecchia, A., Couchot, F., D Agostino, R., Bernardis, P., Gasperis, G., Leo, M., Petris, M., Di Donato, A., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Franceschet, C., Gamboa Lerena, M. M., García, B., Garrido, X., Gaspard, M., Gault, A., Gayer, D., Gervasi, M., Giard, M., Giraud-Héraud, Y., Gómez Berisso, M., González, M., Gradziel, M., Grandsire, L., Guerrard, E., Hamilton, J. -Ch, Harari, D., Haynes, V., Henrot-Versillé, S., Hoang, D. T., Incardona, F., Jules, E., Kaplan, J., Korotkov, A., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Lowitz, A., Lukovic, V., Luterstein, R., Maffei, B., Marnieros, S., Masi, S., Mattei, A., May, A., Mcculloch, M., Medina, M. C., Mele, L., Melhuish, S., Mennella, A., Montier, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., O Sullivan, C., Olivieri, E., Paiella, A., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A., Perbost, C., Perdereau, O., Pezzotta, F., Piacentini, F., Piat, M., Piccirillo, L., Pisano, G., Polenta, G., Prêle, D., Puddu, R., Rambaud, D., Ringegni, P., Romero, G. E., Salatino, M., Schillaci, A., Scoccola, C. G., Scully, S., Spinelli, S., Stolpovskiy, M., Suarez, F., Tartari, A., Thermeau, J. -P, Timbie, P., Torchinsky, S. A., Tristram, M., Truongcanh, V., Tucker, G., Tucker, C., Vanneste, S., Viganò, D., Nicola Vittorio, Voisin, F., Watson, B., Wicek, F., Zannoni, M., Zullo, A., Auge E.,Dumarchez J.,Tran Thanh Van J., D'Alessandro, G, Ade, P, Amico, G, Auguste, D, Aumont, J, Banfi, S, Barbarin, G, Battaglia, P, Battistelli, E, Bau, A, Belier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bonaparte, J, Bonis, J, Bordier, G, Breelle, E, Bunn, E, Burke, D, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, Couchot, F, D'Agostino, R, de Bernardis, P, de Gasperis, G, de Leo, M, de Petris, M, Di Donato, A, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Franceschet, C, Gamboa Lerena, M, Garcia, B, Garrido, X, Gaspard, M, Gault, A, Gayer, D, Gervasi, M, Giard, M, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Guerrard, E, Hamilton, J, Harari, D, Haynes, V, Henrot-Versille, S, Hoang, D, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Lowitz, A, Lukovic, V, Luterstein, R, Maffei, B, Marnieros, S, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mennella, A, Montier, L, Mundo, L, Murphy, J, O'Sullivan, C, Olivieri, E, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perdereau, O, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Polenta, G, Prele, D, Puddu, R, Rambaud, D, Ringegni, P, Romero, G, Salatino, M, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Suarez, F, Tartari, A, Thermeau, J, Timbie, P, Torchinsky, S, Tristram, M, Truongcanh, V, Tucker, G, Tucker, C, Vanneste, S, Vigano, D, Vittorio, N, Voisin, F, Watson, B, Wicek, F, Zannoni, M, and Zullo, A

Subjects
FIS/05 - ASTRONOMIA E ASTROFISICA, Cosmic Microwave Background
Abstract

The Q & U Bolometric Interferometer for Cosmology (QUBIC) is a cosmology experiment which aims to measure the B-mode polarization of the Cosmic Microwave Background (CMB). Measurements of the primordial B-mode pattern of the CMB polarization is in fact among the most exciting goals in cosmology as it would allow testing the inflationary paradigm, an exponential expansion occurred during the first 10−33 seconds of the Universe age. A large number of experiments are attempting to measure the B-modes, from the ground and from the stratosphere using classic imaging techniques. The QUBIC collaboration is developing an innovative concept to measure CMB polarization implementing bolometric interferometry which mixes the high sensitivity of bolometric detectors with an accurate systematics control due to the interferometric nature of the experiment. QUBIC is at an advanced state of tests on all sub-systems and we are planning to start with measurements by the end of 2018 from Alto Chorillo in Argentina.

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