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6 results on '"Noble, G.I."'

1. Measurements of the E-Mode Polarization and Temperature-E-Mode Correlation of the CMB from SPT-3G 2018 Data

Author

Dutcher, D., Balkenhol, L., Ade, P.A.R., Ahmed, Z., Anderes, E., Anderson, A.J., Archipley, M., Avva, J.S., Aylor, K., Barry, P.S., Thakur, R. Basu, Benabed, K., Bender, A.N., Benson, B.A., Bianchini, F., Bleem, L.E., Bouchet, F.R., Bryant, L., Byrum, K., Carlstrom, J.E., Carter, F.W., Cecil, T.W., Chang, C.L., Chaubal, P., Chen, G., Cho, H.-M., Chou, T.-L., Cliche, J.-F., Crawford, T.M., Cukierman, A., Daley, C., De Haan, T., Denison, E.V., Dibert, K., Ding, J., Dobbs, M.A., Everett, W., Feng, C., Ferguson, K.R., Foster, A., Fu, J., Galli, S., Gambrel, A.E., Gardner, R.W., Goeckner-Wald, N., Gualtieri, R., Guns, S., Gupta, N., Guyser, R., Halverson, N.W., Harke-Hosemann, A.H., Harrington, N.L., Henning, J.W., Hilton, G.C., Hivon, E., Holder, G.P., Holzapfel, W.L., Hood, J.C., Howe, D., Huang, N., Irwin, K.D., Jeong, O.B., Jonas, M., Jones, A., Khaire, T.S., Knox, L., Kofman, A.M., Korman, M., Kubik, D.L., Kuhlmann, S., Kuo, C.-L., Lee, A.T., Leitch, E.M., Lowitz, A.E., Lu, C., Meyer, S.S., Michalik, D., Millea, M., Montgomery, J., Nadolski, A., Natoli, T., Nguyen, H., Noble, G.I., Novosad, V., Omori, Y., Padin, S., Pan, Z., Paschos, P., Pearson, J., Posada, C.M., Prabhu, K., Quan, W., Raghunathan, S., Rahlin, A., Reichardt, C.L., Riebel, D., Riedel, B., Rouble, M., Ruhl, J.E., Sayre, J.T., Schiappucci, E., Shirokoff, E., Smecher, G., Sobrin, J.A., Stark, A.A., Stephen, J., Story, K.T., Suzuki, A., Thompson, K.L., Thorne, B., Tucker, C., Umilta, C., Vale, L.R., Vanderlinde, K., Vieira, J.D., Wang, G., Whitehorn, N., Wu, W.L.K., Yefremenko, V., Yoon, K.W., Young, M.R., Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and SPT-3G

Subjects
dimension: 6, satellite: Planck, Cosmology and Nongalactic Astrophysics (astro-ph.CO), pole, cosmic background radiation: spectrum, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, gravitation: lens, cosmological model: parameter space, correlation, cosmic background radiation: multipole, polarization: power spectrum, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

International audience; We present measurements of the E-mode (EE) polarization power spectrum and temperature-E-mode (TE) cross-power spectrum of the cosmic microwave background using data collected by SPT-3G, the latest instrument installed on the South Pole Telescope. This analysis uses observations of a 1500 deg2 region at 95, 150, and 220 GHz taken over a four-month period in 2018. We report binned values of the EE and TE power spectra over the angular multipole range 300≤ℓ<3000, using the multifrequency data to construct six semi-independent estimates of each power spectrum and their minimum-variance combination. These measurements improve upon the previous results of SPTpol across the multipole ranges 300≤ℓ≤1400 for EE and 300≤ℓ≤1700 for TE, resulting in constraints on cosmological parameters comparable to those from other current leading ground-based experiments. We find that the SPT-3G data set is well fit by a ΛCDM cosmological model with parameter constraints consistent with those from Planck and SPTpol data. From SPT-3G data alone, we find H0=68.8±1.5 km s−1 Mpc−1 and σ8=0.789±0.016, with a gravitational lensing amplitude consistent with the ΛCDM prediction (AL=0.98±0.12). We combine the SPT-3G and the Planck data sets and obtain joint constraints on the ΛCDM model. The volume of the 68% confidence region in six-dimensional ΛCDM parameter space is reduced by a factor of 1.5 compared to Planck-only constraints, with no significant shifts in central values. We note that the results presented here are obtained from data collected during just half of a typical observing season with only part of the focal plane operable, and that the active detector count has since nearly doubled for observations made with SPT-3G after 2018.

Published
2021
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2. Meeting the information needs of carers of children with disabilities : a case for the use of virtual communities

Author

Clarke, Rodney, Kyriazis, E, Noble, G.I, Algie, J, Clarke, Rodney, Kyriazis, E, Noble, G.I, and Algie, J

Abstract

From the initial diagnosis parents of children with a disability need timely and accurate information to effectively manage their childs condition. Focussing on the findings of a collaborative research project examining the needs of parents of children with a disability (0- 12 years) the study identifies several information related factors adding to parental stress levels. These include a lack of awareness of support services, application processes, and disability specific information. To overcome the limitations of existing information delivery approaches we propose creating a wiki-based virtual community to serve as a user friendly one-stop shop for carers . Such a community would give them greater access to the lived experience and empathy of other parents who have successfully managed their childs condition

Published
2009

3. Living with leukaemia: participatory documentation using video methodologies

Author

Clarke, Rodney, Noble, G.I, Kyriazis, E, Clarke, Rodney, Noble, G.I, and Kyriazis, E

Abstract

This paper provides initial results of an exploratory study conducted in partnership with the Leukaemia Foundation of Australia into the daily activities and lives of Leukemia patients/survivors. These patients/survivors have volunteered to develop in conjunction with the researchers, video documentation that shows others the effect, impact and consequences of their various forms of the disease. The study draws on Scandinavian approaches to video methodology, typically employed in Services Marketing and Management areas for the detailed description of service encounters, service spaces and services systems, and broader traditions of participatory, community-based documentation and multi-modal digital story telling. The study enables Leukemia patients/survivors to speak about issues that are of concern to them, as well as co-creating personal and social narratives about their disease, for the purposes of communicating within their communities and also outside of them. The study also provides information on the kinds temporary and persistent coalitions entered into by patients/survivors with a large number of stakeholders, both direct and indirect, in order to meet a variety of needs. Relevant coalitions include but are not limited to health careers, complementary careers, and health and business professionals as well as direct support groups like careers, family and friends that can provide high levels of support. These stakeholders provide psychosocial care, spiritual care, socio-cultural care, stress, grief and bereavement care, as well as physical symptom management and in particular pain management. Emphasis will be placed on theoretical, methodological aspects of the study including the use of technology in media acquisition and qualitative analysis. The paper will also describe the ethics process in the design of the project. These m

Published
2009

4. Year two instrument status of the SPT-3G cosmic microwave background receiver

Author

Zmuidzinas, Jonas, Gao, Jian-Rong, Bender, A.N., Ade, P.A.R, Ahmed, Z., Anderson, A.J., Avva, J.S., Aylor, K., Barry, P.S., Basu Thakur, R., Benson, B.A., Bleem, L.S., Bocquet, S., Byrum, K., Carlstrom, J.E., Carter, F.W., Cecil, T.W., Chang, C.L., Cho, H-M., Cliche, J.F., Crawford, T.M., Cukierman, A., de Haan, T., Denison, E.V., Ding, J., Dobbs, M.A., Dodelson, S., Dutcher, D., Everett, W., Foster, A., Gallicchio, J., Gilbert, A., Groh, J.C., Guns, S.T., Halverson, N.W., Harke-Hosemann, A.H., Harrington, N.L., Henning, J.W., Hilton, G.C., Holder, G.P., Holzapfel, W.L., Huang, N., Irwin, K.D., Jeong, O.B., Jonas, M., Jones, A., Khaire, T.S., Knox, L., Kofman, A.M., Korman, M., Kubik, D.L., Kuhlmann, S., Kuo, C-L., Lee, A.T., Leitch, E.M., Lowitz, A.E., Meyer, S.S., Michalik, D., Montgomery, J., Nadolski, A., Natoli, T., Nguyen, H., Noble, G.I., Novosad, V., Padin, S., Pan, Z., Pearson, J., Posada, C.M., Quan, W., Raghunathan, S., Rahlin, A., Reichardt, C.L., Ruhl, J.E., Sayre, J.T., Shirokoff, E., Smecher, G., Sobrin, J.A., Stark, A.A., Story, K.T., Suzuki, A., Thompson, K.L., Tucker, C., Vale, L.R., Vanderlinde, K., Vieira, J.D., Wang, G., Whitehorn, N., Wu, W.L.K., Yefremenko, V., Yoon, K.W., Zmuidzinas, Jonas, Gao, Jian-Rong, Bender, A.N., Ade, P.A.R, Ahmed, Z., Anderson, A.J., Avva, J.S., Aylor, K., Barry, P.S., Basu Thakur, R., Benson, B.A., Bleem, L.S., Bocquet, S., Byrum, K., Carlstrom, J.E., Carter, F.W., Cecil, T.W., Chang, C.L., Cho, H-M., Cliche, J.F., Crawford, T.M., Cukierman, A., de Haan, T., Denison, E.V., Ding, J., Dobbs, M.A., Dodelson, S., Dutcher, D., Everett, W., Foster, A., Gallicchio, J., Gilbert, A., Groh, J.C., Guns, S.T., Halverson, N.W., Harke-Hosemann, A.H., Harrington, N.L., Henning, J.W., Hilton, G.C., Holder, G.P., Holzapfel, W.L., Huang, N., Irwin, K.D., Jeong, O.B., Jonas, M., Jones, A., Khaire, T.S., Knox, L., Kofman, A.M., Korman, M., Kubik, D.L., Kuhlmann, S., Kuo, C-L., Lee, A.T., Leitch, E.M., Lowitz, A.E., Meyer, S.S., Michalik, D., Montgomery, J., Nadolski, A., Natoli, T., Nguyen, H., Noble, G.I., Novosad, V., Padin, S., Pan, Z., Pearson, J., Posada, C.M., Quan, W., Raghunathan, S., Rahlin, A., Reichardt, C.L., Ruhl, J.E., Sayre, J.T., Shirokoff, E., Smecher, G., Sobrin, J.A., Stark, A.A., Story, K.T., Suzuki, A., Thompson, K.L., Tucker, C., Vale, L.R., Vanderlinde, K., Vieira, J.D., Wang, G., Whitehorn, N., Wu, W.L.K., Yefremenko, V., and Yoon, K.W.

Abstract

The South Pole Telescope (SPT) is a millimeter-wavelength telescope designed for high-precision measurements of the cosmic microwave background (CMB). The SPT measures both the temperature and polarization of the CMB with a large aperture, resulting in high resolution maps sensitive to signals across a wide range of angular scales on the sky. With these data, the SPT has the potential to make a broad range of cosmological measurements. These include constraining the effect of massive neutrinos on large-scale structure formation as well as cleaning galactic and cosmological foregrounds from CMB polarization data in future searches for inflationary gravitational waves. The SPT began observing in January 2017 with a new receiver (SPT-3G) containing ~16,000 polarization-sensitive transition-edge sensor bolometers. Several key technology developments have enabled this large-format focal plane, including advances in detectors, readout electronics, and large millimeter-wavelength optics. We discuss the implementation of these technologies in the SPT-3G receiver as well as the challenges they presented. In late 2017 the implementations of all three of these technologies were modified to optimize total performance. Here, we present the current instrument status of the SPT-3G receiver.

5. Particle physics with the cosmic microwave background with SPT-3G

Author

Avva, S. J., Ade, P.A.R, Ahmed, Z, Anderson, A.J, Aylor, K, Basu Thakur, B, Bender, A.N, Benson, B.A, Bleem, L.E, Bocquet, S, Bryant, L, Carlstrom, J.E, Carter, F.W, Cecil, T.W, Chang, C.L, Crawford, T.M, Cukierman, A, de Haan, T, Ding, J, Dobbs, M.A, Dodelson, S, Dutcher, D, Everett, W, Ferguson, K.R, Foster, A, Gallicchio, J, Gambrel, A.E, Gardner, R.W, Groh, J.C, Guns, S, Halverson, N.W, Harke-Hosemann, A.H, Harrington, N.L, Henning, J.W, Holder, G.P, Holzapfel, W.L, Howe, D, Huang, N, Irwin, K.D, Jeong, O.B, Jonas, M, Jones, A, Khaire, T.S, Knox, L, Kofman, A.M, Korman, M, Kubik, D.L, Kuhlmann, S, Kuo, C.-L, Lee, A.T, Lowitz, A.E, Meyer, S.S, Michalik, D, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G.I, Novosad, V, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, C.M, Quan, W, Raghunathan, S, Rahlin, A, Reichardt, C.L, Riebel, D, Ruhl, J.E, Sayre, J.T, Shirokoff, E, Smecher, G, Sobrin, J.A, Stark, A.A, Stephen, J, Story, K.T, Suzuki, A, Thompson, K.L, Tucker, C, Vanderlinde, K, Viera, J.D, Wang, G, Whitehorn, N, Wu, W.L.K, Yefremenko, V, Yoon, K.W, Young, M.R, Avva, S. J., Ade, P.A.R, Ahmed, Z, Anderson, A.J, Aylor, K, Basu Thakur, B, Bender, A.N, Benson, B.A, Bleem, L.E, Bocquet, S, Bryant, L, Carlstrom, J.E, Carter, F.W, Cecil, T.W, Chang, C.L, Crawford, T.M, Cukierman, A, de Haan, T, Ding, J, Dobbs, M.A, Dodelson, S, Dutcher, D, Everett, W, Ferguson, K.R, Foster, A, Gallicchio, J, Gambrel, A.E, Gardner, R.W, Groh, J.C, Guns, S, Halverson, N.W, Harke-Hosemann, A.H, Harrington, N.L, Henning, J.W, Holder, G.P, Holzapfel, W.L, Howe, D, Huang, N, Irwin, K.D, Jeong, O.B, Jonas, M, Jones, A, Khaire, T.S, Knox, L, Kofman, A.M, Korman, M, Kubik, D.L, Kuhlmann, S, Kuo, C.-L, Lee, A.T, Lowitz, A.E, Meyer, S.S, Michalik, D, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G.I, Novosad, V, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, C.M, Quan, W, Raghunathan, S, Rahlin, A, Reichardt, C.L, Riebel, D, Ruhl, J.E, Sayre, J.T, Shirokoff, E, Smecher, G, Sobrin, J.A, Stark, A.A, Stephen, J, Story, K.T, Suzuki, A, Thompson, K.L, Tucker, C, Vanderlinde, K, Viera, J.D, Wang, G, Whitehorn, N, Wu, W.L.K, Yefremenko, V, Yoon, K.W, and Young, M.R

Abstract

The cosmic microwave background (CMB) encodes information about the content and evolution of the universe. The presence of light, weakly interacting particles impacts the expansion history of the early universe, which alters the temperature and polarization anisotropies of the CMB. In this way, current measurements of the CMB place interesting constraints on the neutrino energy density and mass, as well as on the abundance of other possible light relativistic particle species. We present the status of an on-going 1500 sq. deg. survey with the SPT-3G receiver, a new mm-wavelength camera on the 10-m diameter South Pole Telescope (SPT). The SPT-3G camera consists of 16,000 superconducting transition edge sensors, a 10x increase over the previous generation camera, which allows it to map the CMB with an unprecedented combination of sensitivity and angular resolution. We highlight projected constraints on the abundance of sterile neutrinos and the sum of the neutrino masses for the SPT-3G survey, which could help determine the neutrino mass hierarchy....

6. Broadband anti-reflective coatings for cosmic microwave background experiments

Author

Nadolski, A, Kofman, A. M, Vieira, J. D, Ade, P. A. R, Ahmed, Z, Anderson, A. J, Avva, J. S, Basu Thakur, R, Bender, A.N, Benson, B.A, Carlstrom, J.E, Carter, F.W, Cecil, T.W, Chang, C. L, Cliche, J. F, Cukierman, A, de Haan, T, Ding, J, Dobbs, M.A, Dutcher, D, Everett, W, Foster, A, Fu, J, Gallicchio, J, Gilbert, A, Groh, J. C, Guns, S. T, Guyser, R, Halverson, N. W, Harke-Hosemann, A. H, Harrington, N.L, Henning, J. W, Holzapfel, W.L, Huang, N, Irwin, K. D, Jeong, O. B, Jonas, M, Jones, A, Khaire, T. S, Korman, M, Kubik, D.L, Kuhlmann, S, Kuo, C.-L, Lee, A. T, Lowitz, A. E, Meyer, S. S, Michalik, D, Montgomery, J, Natoli, T, Nguyen, H, Noble, G.I, Novosad, V, Padin, S, Pan, Z, Pearson, J, Posada, C. M, Quan, W, Rahlin, A, Ruhl, J. E, Sayre, J.T, Shirokoff, E, Smecher, G, Sobrin, J. A, Stark, A. A, Story, K. T, Suzuki, A, Thompson, K. L, Tucker, C, Vanderlinde, K, Wang, G, Whitehorn, N, Yefremenko, V, Yoon, K. W, Young, M. R, Nadolski, A, Kofman, A. M, Vieira, J. D, Ade, P. A. R, Ahmed, Z, Anderson, A. J, Avva, J. S, Basu Thakur, R, Bender, A.N, Benson, B.A, Carlstrom, J.E, Carter, F.W, Cecil, T.W, Chang, C. L, Cliche, J. F, Cukierman, A, de Haan, T, Ding, J, Dobbs, M.A, Dutcher, D, Everett, W, Foster, A, Fu, J, Gallicchio, J, Gilbert, A, Groh, J. C, Guns, S. T, Guyser, R, Halverson, N. W, Harke-Hosemann, A. H, Harrington, N.L, Henning, J. W, Holzapfel, W.L, Huang, N, Irwin, K. D, Jeong, O. B, Jonas, M, Jones, A, Khaire, T. S, Korman, M, Kubik, D.L, Kuhlmann, S, Kuo, C.-L, Lee, A. T, Lowitz, A. E, Meyer, S. S, Michalik, D, Montgomery, J, Natoli, T, Nguyen, H, Noble, G.I, Novosad, V, Padin, S, Pan, Z, Pearson, J, Posada, C. M, Quan, W, Rahlin, A, Ruhl, J. E, Sayre, J.T, Shirokoff, E, Smecher, G, Sobrin, J. A, Stark, A. A, Story, K. T, Suzuki, A, Thompson, K. L, Tucker, C, Vanderlinde, K, Wang, G, Whitehorn, N, Yefremenko, V, Yoon, K. W, and Young, M. R

Abstract

The desire for higher sensitivity has driven ground-based cosmic microwave background (CMB) experiments to employ ever larger focal planes, which in turn require larger reimaging optics. Practical limits to the maximum size of these optics motivates the development of quasi-optically-coupled (lenslet-coupled), multi-chroic detectors. These detectors can be sensitive across a broader bandwidth compared to waveguide-coupled detectors. However, the increase in bandwidth comes at a cost: the lenses (up to 700 mm diameter) and lenslets ( 5 mm diameter, hemispherical lenses on the focal plane) used in these systems are made from high-refractive-index materials (such as silicon or amorphous aluminum oxide) that reflect nearly a third of the incident radiation. In order to maximize the faint CMB signal that reaches the detectors, the lenses and lenslets must be coated with an anti-reflective (AR) material. The AR coating must maximize radiation transmission in scientifically interesting bands and be cryogenically stable. Such a coating was developed for the third generation camera, SPT-3G, of the South Pole Telescope (SPT) experiment, but the materials and techniques used in the development are general to AR coatings for mm-wave optics. The three-layer polytetra uoroethylene-based AR coating is broadband, inexpensive, and can be manufactured with simple tools. The coating is field tested; AR coated focal plane elements were deployed in the 2016-2017 austral summer and AR coated reimaging optics were deployed in 2017-2018.

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