Search

Your search keyword '"Avva, J.S."' showing total 2 results
Start Over Author "Avva, J.S."
2 results on '"Avva, J.S."'

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
Full Text
View/download PDF

2. 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.

Catalog

Books, media, physical & digital resources
See catalog results