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1. Erratum: “A Measurement of the Cosmic Microwave Background B-Mode Polarization Power Spectrum at Sub-degree Scales with POLARBEAR” (2014, ApJ, 794, 171)

Author

Ade, The Polarbear Collaboration PAR, Akiba, Y, Anthony, AE, Arnold, K, Atlas, M, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Flanigan, D, Gilbert, A, Grainger, W, Halverson, NW, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Hori, Y, Howard, J, Hyland, P, Inoue, Y, Jaehnig, GC, Jaffe, AH, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Le Jeune, M, Lee, AT, Leitch, EM, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, MJ, Navaroli, M, Nishino, H, Orlando, A, Paar, H, Peloton, J, Poletti, D, Quealy, E, Rebeiz, G, Reichardt, CL, Richards, PL, Ross, C, Schanning, I, Schenck, DE, Sherwin, BD, Shimizu, A, Shimmin, C, Shimon, M, Siritanasak, P, Smecher, G, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Takakura, S, Tomaru, T, Wilson, B, Yadav, A, and Zahn, O

Subjects
Particle and High Energy Physics, Physical Sciences, cosmic background radiation, cosmology: observations, large-scale structure of universe, astro-ph.CO, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics, Space sciences
Abstract

We report an improved measurement of the cosmic microwave background B-mode polarization power spectrum with the Polarbear experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analyzed data from the first season (2012-2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles 500 ≤ ℓ ≤ 2100, where the dominant B-mode signal is expected to be due to the gravitational lensing of E-modes. We reject the null hypothesis of no B-mode polarization at a confidence of 3.1σ including both statistical and systematic uncertainties. We test the consistency of the measured B-modes with the Λ Cold Dark Matter (ΛCDM) framework by fitting for a single lensing amplitude parameter A L = 0.60 +0.26-0.24(stat)+0.00-0.04 (inst) ± 0.14(foreground) ± 0.04(multi), where A L = 1 relative to the Planck 2015 best-fit model prediction. We obtain ±0.14(foreground) ±0.04(multi), where is the fiducial ΛCDM value.

Published
2017

2. A Measurement of the Cosmic Microwave Background B-Mode Polarization Power Spectrum at Sub-Degree Scales with POLARBEAR

Author

The POLARBEAR Collaboration, Ade, P. A. R., Akiba, Y., Anthony, A. E., Arnold, K., Atlas, M., Barron, D., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Flanigan, D., Gilbert, A., Grainger, W., Halverson, N. W., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Hori, Y., Howard, J., Hyland, P., Inoue, Y., Jaehnig, G. C., Jaffe, A. H., Keating, B., Kermish, Z., Keskitalo, R., Kisner, T., Jeune, M. Le, Lee, A. T., Leitch, E. M., Linder, E., Lungu, M., Matsuda, F., Matsumura, T., Meng, X., Miller, N. J., Morii, H., Moyerman, S., Myers, M. J., Navaroli, M., Nishino, H., Paar, H., Peloton, J., Poletti, D., Quealy, E., Rebeiz, G., Reichardt, C. L., Richards, P. L., Ross, C., Schanning, I., Schenck, D. E., Sherwin, B. D., Shimizu, A., Shimmin, C., Shimon, M., Siritanasak, P., Smecher, G., Spieler, H., Stebor, N., Steinbach, B., Stompor, R., Suzuki, A., Takakura, S., Tomaru, T., Wilson, B., Yadav, A., and Zahn, O.

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

We report a measurement of the B-mode polarization power spectrum in the cosmic microwave background (CMB) using the POLARBEAR experiment in Chile. The faint B-mode polarization signature carries information about the Universe's entire history of gravitational structure formation, and the cosmic inflation that may have occurred in the very early Universe. Our measurement covers the angular multipole range 500 < l < 2100 and is based on observations of an effective sky area of 25 square degrees with 3.5 arcmin resolution at 150 GHz. On these angular scales, gravitational lensing of the CMB by intervening structure in the Universe is expected to be the dominant source of B-mode polarization. Including both systematic and statistical uncertainties, the hypothesis of no B-mode polarization power from gravitational lensing is rejected at 97.1% confidence. The band powers are consistent with the standard cosmological model. Fitting a single lensing amplitude parameter A_BB to the measured band powers, A_BB = 1.12 +/- 0.61 (stat) +0.04/-0.12 (sys) +/- 0.07 (multi), where A_BB = 1 is the fiducial WMAP-9 LCDM value. In this expression, "stat" refers to the statistical uncertainty, "sys" to the systematic uncertainty associated with possible biases from the instrument and astrophysical foregrounds, and "multi" to the calibration uncertainties that have a multiplicative effect on the measured amplitude A_BB., Comment: 22 pages, 12 figures. v3 is updated to reflect the erratum published in ApJ 2017 848:73, which changed the rejection of the hypothesis of no B-mode polarization power from gravitational lensing from 97.2% to 97.1%

Published
2014
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3. Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum with the POLARBEAR experiment

Author

POLARBEAR Collaboration, Ade, P. A. R., Akiba, Y., Anthony, A. E., Arnold, K., Atlas, M., Barron, D., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Flanigan, D., Gilbert, A., Grainger, W., Halverson, N. W., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Hori, Y., Howard, J., Hyland, P., Inoue, Y., Jaehnig, G. C., Jaffe, A., Keating, B., Kermish, Z., Keskitalo, R., Kisner, T., Jeune, M. Le, Lee, A. T., Linder, E., Leitch, E. M., Lungu, M., Matsuda, F., Matsumura, T., Meng, X., Miller, N. J., Morii, H., Moyerman, S., Myers, M. J., Navaroli, M., Nishino, H., Paar, H., Peloton, J., Quealy, E., Rebeiz, G., Reichardt, C. L., Richards, P. L., Ross, C., Schanning, I., Schenck, D. E., Sherwin, B., Shimizu, A., Shimmin, C., Shimon, M., Siritanasak, P., Smecher, G., Spieler, H., Stebor, N., Steinbach, B., Stompor, R., Suzuki, A., Takakura, S., Tomaru, T., Wilson, B., Yadav, A., and Zahn, O.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Gravitational lensing due to the large-scale distribution of matter in the cosmos distorts the primordial Cosmic Microwave Background (CMB) and thereby induces new, small-scale $B$-mode polarization. This signal carries detailed information about the distribution of all the gravitating matter between the observer and CMB last scattering surface. We report the first direct evidence for polarization lensing based on purely CMB information, from using the four-point correlations of even- and odd-parity $E$- and $B$-mode polarization mapped over $\sim30$ square degrees of the sky measured by the POLARBEAR experiment. These data were analyzed using a blind analysis framework and checked for spurious systematic contamination using null tests and simulations. Evidence for the signal of polarization lensing and lensing $B$-modes is found at 4.2$\sigma$ (stat.+sys.) significance. The amplitude of matter fluctuations is measured with a precision of $27\%$, and is found to be consistent with the Lambda Cold Dark Matter ($\Lambda$CDM) cosmological model. This measurement demonstrates a new technique, capable of mapping all gravitating matter in the Universe, sensitive to the sum of neutrino masses, and essential for cleaning the lensing $B$-mode signal in searches for primordial gravitational waves., Comment: 7 pages, 3 figures. Matches Physical Review Letters accepted version. Submitted on 11 March 2014; accepted on 25 April 2014. The companion paper (arXiv:1312.6645) describes a measurement of polarization lensing in cross-correlation

Published
2013
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4. Evidence for Gravitational Lensing of the Cosmic Microwave Background Polarization from Cross-correlation with the Cosmic Infrared Background

Author

POLARBEAR Collaboration, Ade, P. A. R., Akiba, Y., Anthony, A. E., Arnold, K., Atlas, M., Barron, D., Boettger, D., Borrill, J., Borys, C., Chapman, S., Chinone, Y., Dobbs, M., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Flanigan, D., Gilbert, A., Grainger, W., Halverson, N. W., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Hori, Y., Howard, J., Hyland, P., Inoue, Y., Jaehnig, G. C., Jaffe, A., Keating, B., Kermish, Z., Keskitalo, R., Kisner, T., Jeune, M. Le, Lee, A. T., Leitch, E. M., Linder, E., Lungu, M., Matsuda, F., Matsumura, T., Meng, X., Miller, N. J., Morii, H., Moyerman, S., Myers, M. J., Navaroli, M., Nishino, H., Paar, H., Peloton, J., Quealy, E., Rebeiz, G., Reichardt, C. L., Richards, P. L., Ross, C., Rotermund, K., Schanning, I., Schenck, D. E., Sherwin, B. D., Shimizu, A., Shimmin, C., Shimon, M., Siritanasak, P., Smecher, G., Spieler, H., Stebor, N., Steinbach, B., Stompor, R., Suzuki, A., Takakura, S., Tikhomirov, A., Tomaru, T., Wilson, B., Yadav, A., and Zahn, O.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We reconstruct the gravitational lensing convergence signal from Cosmic Microwave Background (CMB) polarization data taken by the POLARBEAR experiment and cross-correlate it with Cosmic Infrared Background (CIB) maps from the Herschel satellite. From the cross-spectra, we obtain evidence for gravitational lensing of the CMB polarization at a statistical significance of 4.0$\sigma$ and evidence for the presence of a lensing $B$-mode signal at a significance of 2.3$\sigma$. We demonstrate that our results are not biased by instrumental and astrophysical systematic errors by performing null-tests, checks with simulated and real data, and analytical calculations. This measurement of polarization lensing, made via the robust cross-correlation channel, not only reinforces POLARBEAR auto-correlation measurements, but also represents one of the early steps towards establishing CMB polarization lensing as a powerful new probe of cosmology and astrophysics., Comment: 6 pages, 2 figures. v2: replaced with version accepted for publication in Physical Review Letters. The companion paper (arXiv:1312.6646) describes a measurement of the polarization lensing power spectrum

Published
2013
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5. The bolometric focal plane array of the Polarbear CMB experiment

Author

Arnold, K., Ade, P. A. R., Anthony, A. E., Barron, D., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M. A., Errard, J., Fabbian, G., Flanigan, D., Fuller, G., Ghribi, A., Grainger, W., Halverson, N., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Howard, J., Hyland, P., Jaffe, A., Keating, B., Kermish, Z., Kisner, T., Jeune, M. Le, Lee, A. T., Linder, E., Lungu, M., Matsuda, F., Matsumura, T., Miller, N. J., Meng, X., Morii, H., Moyerman, S., Myers, M. J., Nishino, H., Paar, H., Quealy, E., Reichardt, C., Richards, P. L., Ross, C., Shimizu, A., Shimmin, C., Shimon, M., Sholl, M., Siritanasak, P., Spieler, H., Stebor, N., Steinbach, B., Stompor, R., Suzuki, A., Tomaru, T., Tucker, C., and Zahn, O.

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

The Polarbear Cosmic Microwave Background (CMB) polarization experiment is currently observing from the Atacama Desert in Northern Chile. It will characterize the expected B-mode polarization due to gravitational lensing of the CMB, and search for the possible B-mode signature of inflationary gravitational waves. Its 250 mK focal plane detector array consists of 1,274 polarization-sensitive antenna-coupled bolometers, each with an associated lithographed band-defining filter. Each detector's planar antenna structure is coupled to the telescope's optical system through a contacting dielectric lenslet, an architecture unique in current CMB experiments. We present the initial characterization of this focal plane.

Published
2012
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6. The POLARBEAR Experiment

Author

Kermish, Z., Ade, P., Anthony, A., Arnold, K., Barron, D., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M. A., Errard, J., Fabbian, G., Flanigan, D., Fuller, G., Ghribi, A., Grainger, W., Halverson, N., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Howard, J., Hyland, P., Jaffe, A., Keating, B., Kisner, T., Lee, A. T., Jeune, M. Le, Linder, E., Lungu, M., Matsuda, F., Matsumura, T., Meng, X., Miller, N. J., Morii, H., Moyerman, S., Myers, M. J., Nishino, H., Paar, H., Quealy, E., Reichardt, C. L., Richards, P. L., Ross, C., Shimizu, A., Shimon, M., Shimmin, C., Sholl, M., Siritanasak, P., Spieler, H., Stebor, N., Steinbach, B., Stompor, R., Suzuki, A., Tomaru, T., Tucker, C., and Zahn, O.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5 arcminute beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the sensitivity to detect the expected small scale B-mode signal due to gravitational lensing and search for the large scale B-mode signal from inflationary gravitational waves. POLARBEAR was assembled for an engineering run in the Inyo Mountains of California in 2010 and was deployed in late 2011 to the Atacama Desert in Chile. An overview of the instrument is presented along with characterization results from observations in Chile., Comment: Presented at SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, July 6, 2012. To be published in Proceedings of SPIE Volume 8452

Published
2012
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7. Ultra High Energy Cosmology with POLARBEAR

Author

Keating, B., Moyerman, S., Boettger, D., Edwards, J., Fuller, G., Matsuda, F., Miller, N., Paar, H., Rebeiz, G., Schanning, I., Shimon, M., Stebor, N., Arnold, K., Flanigan, D., Holzapfel, W., Howard, J., Kermish, Z., Lee, A., Lungu, M., Myers, M., Nishino, H., O'Brient, R., Quealy, E., Reichardt, C., Richards, P., Shimmin, C., Steinbach, B., Suzuki, A., Zahn, O., Borrill, J., Cantalupo, C., Kisner, E., Linder, E., Sholl, M., Spieler, H., Anthony, A., Halverson, N., Errard, J., Fabbian, G., Jeune, M. Le, Stompor, R., Jaffe, A., O'Dea, D., Chinone, Y., Hasegawa, M., Hazumi, M., Matsumura, T., Morii, H., Shimizu, A., Tomaru, T., Hyland, P., Dobbs, M., Ade, P., Grainger, W., and Tucker, C.

Subjects
Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract

Observations of the temperature anisotropy of the Cosmic Microwave Background (CMB) lend support to an inflationary origin of the universe, yet no direct evidence verifying inflation exists. Many current experiments are focussing on the CMB's polarization anisotropy, specifically its curl component (called "B-mode" polarization), which remains undetected. The inflationary paradigm predicts the existence of a primordial gravitational wave background that imprints a unique B-mode signature on the CMB's polarization at large angular scales. The CMB B-mode signal also encodes gravitational lensing information at smaller angular scales, bearing the imprint of cosmological large scale structures (LSS) which in turn may elucidate the properties of cosmological neutrinos. The quest for detection of these signals; each of which is orders of magnitude smaller than the CMB temperature anisotropy signal, has motivated the development of background-limited detectors with precise control of systematic effects. The POLARBEAR experiment is designed to perform a deep search for the signature of gravitational waves from inflation and to characterize lensing of the CMB by LSS. POLARBEAR is a 3.5 meter ground-based telescope with 3.8 arcminute angular resolution at 150 GHz. At the heart of the POLARBEAR receiver is an array featuring 1274 antenna-coupled superconducting transition edge sensor (TES) bolometers cooled to 0.25 Kelvin. POLARBEAR is designed to reach a tensor-to-scalar ratio of 0.025 after two years of observation -- more than an order of magnitude improvement over the current best results, which would test physics at energies near the GUT scale. POLARBEAR had an engineering run in the Inyo Mountains of Eastern California in 2010 and will begin observations in the Atacama Desert in Chile in 2011., Comment: 8 pages, 6 figures, DPF 2011 conference proceedings

Published
2011

8. A blind detection of a large, complex, Sunyaev--Zel'dovich structure

Author

Consortium, AMI, Shimwell, T. W., Barker, R. W., Biddulph, P., Bly, D., Boysen, R. C., Brown, A. R., Brown, M. L., Clementson, C., Crofts, M., Culverhouse, T. L., Czeres, J., Dace, R. J., Davies, M. L., D'Alessandro, R., Doherty, P., Duggan, K., Ely, J. A., Felvus, M., Feroz, F., Flynn, W., Franzen, T. M. O., Geisbusch, J., Genova-Santos, R., Grainge, K. J. B., Grainger, W. F., Hammett, D., Hobson, M. P., Holler, C. M., Hurley-Walker, N., Jilley, R., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A. N., Marshall, P. J., Newton, F., Norris, O., Northrop, I., Odell, D. M., Olamaie, M., Pober, Y. C. Perrott J. C., Pooley, G. G., Pospieszalski, M. W., Quy, V., Rodriguez-Gonzalvez, C., Saunders, R. D. E., Scaife, A. M. M., Schammel, M. P., Schofield, J., Scott, P. F., Shaw, C., Smith, H., Titterington, D. J., Velic, M., Waldram, E. M., West, S., Wood, B. A., Yassin, G., and Zwart, J. T. L.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present an interesting Sunyaev-Zel'dovich (SZ) detection in the first of the Arcminute Microkelvin Imager (AMI) 'blind', degree-square fields to have been observed down to our target sensitivity of 100{\mu}Jy/beam. In follow-up deep pointed observations the SZ effect is detected with a maximum peak decrement greater than 8 \times the thermal noise. No corresponding emission is visible in the ROSAT all-sky X-ray survey and no cluster is evident in the Palomar all-sky optical survey. Compared with existing SZ images of distant clusters, the extent is large (\approx 10') and complex; our analysis favours a model containing two clusters rather than a single cluster. Our Bayesian analysis is currently limited to modelling each cluster with an ellipsoidal or spherical beta-model, which do not do justice to this decrement. Fitting an ellipsoid to the deeper candidate we find the following. (a) Assuming that the Evrard et al. (2002) approximation to Press & Schechter (1974) correctly gives the number density of clusters as a function of mass and redshift, then, in the search area, the formal Bayesian probability ratio of the AMI detection of this cluster is 7.9 \times 10^4:1; alternatively assuming Jenkins et al. (2001) as the true prior, the formal Bayesian probability ratio of detection is 2.1 \times 10^5:1. (b) The cluster mass is MT,200 = 5.5+1.2\times 10^14h-1M\odot. (c) Abandoning a physical model with num- -1.3 70 ber density prior and instead simply modelling the SZ decrement using a phenomenological {\beta}-model of temperature decrement as a function of angular distance, we find a central SZ temperature decrement of -295+36 {\mu}K - this allows for CMB primary anisotropies, receiver -15 noise and radio sources. We are unsure if the cluster system we observe is a merging system or two separate clusters., Comment: accepted MNRAS. 12 pages, 9 figures

Published
2010
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9. The POLARBEAR Cosmic Microwave Background Polarization Experiment

Author

Barron, D, Ade, P, Anthony, A, Arnold, K, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Edwards, J, Errard, J, Fabbian, G, Flanigan, D, Fuller, G, Ghribi, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, W, Howard, J, Hyland, P, Jaehnig, G, Jaffe, A, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Lee, AT, Le Jeune, M, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, M, Nishino, H, Paar, H, Peloton, J, Quealy, E, Rebeiz, G, Reichardt, CL, Richards, PL, Ross, C, Shimizu, A, Shimmin, C, Shimon, M, Sholl, M, Siritanasak, P, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Tomaru, T, Tucker, C, Yadav, A, and Zahn, O

Subjects
Particle and High Energy Physics, Physical Sciences, Cosmic microwave background, CMB polarization, Millimeter-wave, Mathematical Physics, Classical Physics, Condensed Matter Physics, General Physics, Classical physics, Condensed matter physics
Abstract

The polarbear cosmic microwave background (CMB) polarization experiment has been observing since early 2012 from its 5,200 m site in the Atacama Desert in Northern Chile. polarbear's measurements will characterize the expected CMB polarization due to gravitational lensing by large scale structure, and search for the possible B-mode polarization signature of inflationary gravitational waves. polarbear's 250 mK focal plane detector array consists of 1,274 polarization-sensitive antenna-coupled bolometers, each with an associated lithographed band-defining filter and contacting dielectric lenslet, an architecture unique in current CMB experiments. The status of the polarbear instrument, its focal plane, and the analysis of its measurements are presented. © 2014 Springer Science+Business Media New York.

Published
2014

10. The Arcminute Microkelvin Imager

Author

Consortium, AMI, Zwart, J. T. L., Barker, R. W., Biddulph, P., Bly, D., Boysen, R. C., Brown, A. R., Clementson, C., Crofts, M., Culverhouse, T. L., Czeres, J., Dace, R. J., Davies, M. L., D'Alessandro, R., Doherty, P., Duggan, K., Ely, J. A., Felvus, M., Feroz, F., Flynn, W., Franzen, T. M. O., Geisbüsch, J., Génova-Santos, R., Grainge, K. J. B., Grainger, W. F., Hammett, D., Hills, R. E., Hobson, M. P., Holler, C. M., Hurley-Walker, N., Jilley, R., Jones, M. E., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A. N., Marshall, P. J., Newton, F., Norris, O., Northrop, I., Odell, D. M., Pober, J. C., Pooley, G. G., Quy, V., Rodríguez-Gonzálvez, C., Saunders, R. D. E., Scaife, A. M., Schofield, J., Scott, P. F., Shaw, C., Shimwell, T. W., Smith, H., Taylor, A. C., Titterington, D. J., Velić, M., Waldram, E. M., West, S., Wood, B. A., and Yassin, G.

Subjects
Astrophysics
Abstract

The Arcminute Microkelvin Imager is a pair of interferometer arrays operating with six frequency channels spanning 13.9-18.2 GHz, with very high sensitivity to angular scales 30''-10'. The telescope is aimed principally at Sunyaev-Zel'dovich imaging of clusters of galaxies. We discuss the design of the telescope and describe and explain its electronic and mechanical systems., Comment: 15 pages, 13 figures. Submitted to MNRAS

Published
2008
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11. High-significance Sunyaev-Zel'dovich measurement: Abell 1914 seen with the Arcminute Microkelvin Imager

Author

AMI Collaboration, Barker, R., Biddulph, P., Bly, D., Boysen, R., Brown, A., Clementson, C., Crofts, M., Culverhouse, T., Czeres, J., Dace, R., D'Alessandro, R., Doherty, P., Duffett-Smith, P., Duggan, K., Ely, J., Felvus, M., Flynn, W., Geisbuesch, J., Grainge, K., Grainger, W., Hammet, D., Hills, R., Hobson, M., Holler, C., Jilley, R., Jones, M., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A., Marshall, P., Newton, F., Norris, O., Northrop, I., Pooley, G., Quy, V., Saunders, R., Scaife, A., Schofield, J., Scott, P., Shaw, C., Taylor, A., Titterington, D., Velic, M., Waldram, E., West, S., Wood, B., Yassin, G., and Zwart, J.

Subjects
Astrophysics
Abstract

We report the first detection of a Sunyaev-Zel'dovich (S-Z) decrement with the Arcminute Microkelvin Imager (AMI). We have made commissioning observations towards the cluster A1914 and have measured an integrated flux density of -8.61 mJy in a uv-tapered map with noise level 0.19 mJy/beam. We find that the spectrum of the decrement, measured in the six channels between 13.5-18GHz, is consistent with that expected for a S-Z effect. The sensitivity of the telescope is consistent with the figures used in our simulations of cluster surveys with AMI., Comment: 5 pages, 6 figures, submitted to MNRAS Letters

Published
2005
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12. The POLARBEAR experiment

Author

Kermish, ZD, Ade, P, Anthony, A, Arnold, K, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, MA, Errard, J, Fabbian, G, Flanigan, D, Fuller, G, Ghribi, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Howard, J, Hyland, P, Jaffe, A, Keating, B, Kisner, T, Lee, AT, Le Jeune, M, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, MJ, Nishino, H, Paar, H, Quealy, E, Reichardt, CL, Richards, PL, Ross, C, Shimizu, A, Shimon, M, Shimmin, C, Sholl, M, Siritanasak, P, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Tomaru, T, Tucker, C, and Zahn, O

Subjects
Cosmic Microwave Background, Inflation, Polarization, Bolometer, astro-ph.IM
Abstract

We present the design and characterization of the polarbear experiment. polarbear will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5′ beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, polarbear has the sensitivity to detect the expected small scale B-mode signal due to gravitational lensing and search for the large scale B-mode signal from inflationary gravitational waves. polarbear was assembled for an engineering run in the Inyo Mountains of California in 2010 and was deployed in late 2011 to the Atacama Desert in Chile. An overview of the instrument is presented along with characterization results from observations in Chile. © 2012 SPIE.

Published
2012

13. Mapping of the SZ effect in the cluster Cl 0016+16 with the Ryle Telescope

Author

Grainge, K., Grainger, W. F., Jones, M. E., Kneissl, R., Pooley, G. G., and Saunders, R.

Subjects
Astrophysics
Abstract

We have mapped the high-redshift (z = 0.546) cluster Cl 0016+16 with the Ryle Telescope at 15 GHz. The Sunyaev-Zel'dovich decrement is clearly detected, and resolved. We combine our data with an X-ray image from ROSAT, and a gas temperature from ASCA to estimate the Hubble Constant H0 = 69 +21/-16 km/s/Mpc for an Omega_M=1.0 cosmology or H0 = 84 +25/-19 km/s/Mpc for Omega_M=0.3 and Omega_Lambda=0.7., Comment: 10 pages, 2 tables, 6 figures Submitted to MNRAS

Published
2001
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14. The POLARBEAR-2 Experiment

Author

Suzuki, A., Ade, P., Akiba, Y., Aleman, C., Arnold, K., Atlas, M., Barron, D., Borrill, J., Chapman, S., Chinone, Y., Cukierman, A., Dobbs, M., Elleflot, T., Errard, J., Fabbian, G., Feng, G., Gilbert, A., Grainger, W., Halverson, N., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W., Hori, Y., Inoue, Y., Jaehnig, G., Katayama, N., Keating, B., Kermish, Z., Keskitalo, R., Kisner, T., Lee, A., Matsuda, F., Matsumura, T., Morii, H., Moyerman, S., Myers, M., Navaroli, M., Nishino, H., Okamura, T., Reichart, C., Richards, P., Ross, C., Rotermund, K., Sholl, M., Siritanasak, P., Smecher, G., Stebor, N., Stompor, R., Suzuki, J., Takada, S., Takakura, S., Tomaru, T., Wilson, B., Yamaguchi, H., and Zahn, O.

Published
2014
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15. Tom J. Cade 1928–2019

Author

Lloyd Kiff, Clayton M. White, and Grainger W. Hunt

Subjects
media_common.quotation_subject, Animal Science and Zoology, Art, media_common
Published
2020

18. Decoupling negative damping signals in a power system through dynamic gain reduction measures

Author

Coowar, F., Magdy, M.A., and Grainger, W.

Subjects
Oscillation -- Control, Interconnected electric utility systems -- Control, Damping (Mechanics) -- Methods, Business, Electronics, Electronics and electrical industries
Abstract

Low frequency oscillations occurring in a power system can be accentuated in generators through a feedback loop which connects the output of the system to the summing junction of the Automatic Voltage Regulator (AVR) where the the Power System Stabilizer (PSS) is also connected. A method of decoupling these oscillations without compromising the benevolent effects of other control loops in that system is presented. A notch filter, located in the forward path of the negative damping signal, provides the necessary Dynamic Gain Reduction (DGR) for 'switching off' the detrimental signals. This paper provides relevant frequency domain analysis of the closed loop transfer function of a typical power system which reflects the effect of tie-line disturbances on power angle oscillations. This leads to a restructuring of the transfer blocks in the system and the design of a DGR block that allows the decoupling of the negative damping signals. Additional insight into the effect of negative damping signals and their subsequent decoupling is provided through the examination of loop and transfer block signals.

Published
1992

19. A Measurement of the Cosmic Microwave Background B-Mode Polarization Power Spectrum at Sub-degree Scales with POLARBEAR (vol 794, 171, 2014)

Author

Ade, PAR, Akiba, Y, Anthony, AE, Arnold, K, Atlas, M, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Flanigan, D, Gilbert, A, Grainger, W, Halverson, NW, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Hori, Y, Howard, J, Hyland, P, Inoue, Y, Jaehnig, GC, Jaffe, AH, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Le Jeune, M, Lee, AT, Leitch, EM, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, MJ, Navaroli, M, Nishino, H, Orlando, A, Paar, H, Peloton, J, Poletti, D, Quealy, E, Rebeiz, G, Reichardt, CL, Richards, PL, Ross, C, Schanning, I, Schenck, DE, Sherwin, BD, Shimizu, A, Shimmin, C, Shimon, M, Siritanasak, P, Smecher, G, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Takakura, S, Tomaru, T, Wilson, B, Yadav, A, Zahn, O, Ade, PAR, Akiba, Y, Anthony, AE, Arnold, K, Atlas, M, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Flanigan, D, Gilbert, A, Grainger, W, Halverson, NW, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Hori, Y, Howard, J, Hyland, P, Inoue, Y, Jaehnig, GC, Jaffe, AH, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Le Jeune, M, Lee, AT, Leitch, EM, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, MJ, Navaroli, M, Nishino, H, Orlando, A, Paar, H, Peloton, J, Poletti, D, Quealy, E, Rebeiz, G, Reichardt, CL, Richards, PL, Ross, C, Schanning, I, Schenck, DE, Sherwin, BD, Shimizu, A, Shimmin, C, Shimon, M, Siritanasak, P, Smecher, G, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Takakura, S, Tomaru, T, Wilson, B, Yadav, A, and Zahn, O

Published
2017

21. Erratum: “A Measurement of the Cosmic Microwave Background B-Mode Polarization Power Spectrum at Sub-degree Scales with POLARBEAR” (2014, ApJ, 794, 171)

Author

P. A. R. Ade, The Polarbear Collaboration:, primary, Akiba, Y., additional, Anthony, A. E., additional, Arnold, K., additional, Atlas, M., additional, Barron, D., additional, Boettger, D., additional, Borrill, J., additional, Chapman, S., additional, Chinone, Y., additional, Dobbs, M., additional, Elleflot, T., additional, Errard, J., additional, Fabbian, G., additional, Feng, C., additional, Flanigan, D., additional, Gilbert, A., additional, Grainger, W., additional, Halverson, N. W., additional, Hasegawa, M., additional, Hattori, K., additional, Hazumi, M., additional, Holzapfel, W. L., additional, Hori, Y., additional, Howard, J., additional, Hyland, P., additional, Inoue, Y., additional, Jaehnig, G. C., additional, Jaffe, A. H., additional, Keating, B., additional, Kermish, Z., additional, Keskitalo, R., additional, Kisner, T., additional, Jeune, M. Le, additional, Lee, A. T., additional, Leitch, E. M., additional, Linder, E., additional, Lungu, M., additional, Matsuda, F., additional, Matsumura, T., additional, Meng, X., additional, Miller, N. J., additional, Morii, H., additional, Moyerman, S., additional, Myers, M. J., additional, Navaroli, M., additional, Nishino, H., additional, Orlando, A., additional, Paar, H., additional, Peloton, J., additional, Poletti, D., additional, Quealy, E., additional, Rebeiz, G., additional, Reichardt, C. L., additional, Richards, P. L., additional, Ross, C., additional, Schanning, I., additional, Schenck, D. E., additional, Sherwin, B. D., additional, Shimizu, A., additional, Shimmin, C., additional, Shimon, M., additional, Siritanasak, P., additional, Smecher, G., additional, Spieler, H., additional, Stebor, N., additional, Steinbach, B., additional, Stompor, R., additional, Suzuki, A., additional, Takakura, S., additional, Tomaru, T., additional, Wilson, B., additional, Yadav, A., additional, and Zahn, O., additional

Published
2017
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22. Progress in restoring the aplomado falcon to southern Texas

Author

Jenny, Peter J., Heinrich, William, Montoya, Angel B., Mutch, Brian, Sandfort, Cal, and Hunt, Grainger W.

Subjects
Endangered species -- Protection and preservation, Falcons -- Protection and preservation, Zoology and wildlife conservation
Abstract

The northern aplomado falcon was very commonly found in the savannas of southern Texas and in other parts of the American Southwest. As it virtually disappeared in the 1950's and was listed in endangered species list by 1986, the attempts on restoring it are discussed.

Published
2004

23. Measurement of the cosmic microwave background polarization lensing power spectrum with the POLARBEAR experiment

Author

POLARBEAR Collaboration, Ade, P. A. R., Akiba, Y., Anthony, A. E., Arnold, K., Atlas, M., Barron, D., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Flanigan, D., Gilbert, A., Grainger, W., Halverson, N. W., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Hori, Y., Howard, J., Hyland, P., Inoue, Y., Jaehnig, G. C., Jaffe, A., Keating, B., Kermish, Z., Keskitalo, R., Kisner, T., Jeune, M. Le, Lee, A. T., Linder, E., Leitch, E. M., Lungu, M., Matsuda, F., Matsumura, T., Meng, X., Miller, N. J., Morii, H., Moyerman, S., Myers, M. J., Navaroli, M., Nishino, H., Paar, H., Peloton, J., Quealy, E., Rebeiz, G., Reichardt, C. L., Richards, P. L., Ross, C., Schanning, I., Schenck, D. E., Sherwin, B., Shimizu, A., Shimmin, C., Shimon, M., Siritanasak, P., Smecher, G., Spieler, H., Stebor, N., Steinbach, B., Stompor, R., Suzuki, A., Takakura, S., Tomaru, T., Wilson, B., Yadav, A., Zahn, O., Institut de biologie et chimie des protéines [Lyon] (IBCP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Queen Mary University of London (QMUL), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Cavendish Laboratory, University of Cambridge [UK] (CAM), Advanced Fusion Research Center, Kyushu University [Fukuoka]-Research Institute for Applied Mechanics, RIKEN IFREQ, National Astronomical Observatory of Japan (NAOJ), National Institute for Laser, Plasma and Radiation Physics (INFLPR), Department of Applied Chemistry (Faculty of Engineering, Hiroshima University), Hiroshima University, National Institute for Environmental Studies (NIES), McGill University = Université McGill [Montréal, Canada], Institute for Advanced Study [Princeton] (IAS), Dalhousie University [Halifax], Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), The University of Tokyo (UTokyo), University of California [San Diego] (UC San Diego), University of California, POLARBEAR, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), University of California (UC), and The University of Tokyo

Subjects
Physics, [PHYS]Physics [physics], Cosmology and Nongalactic Astrophysics (astro-ph.CO), Cold dark matter, Cosmic microwave background, Strong gravitational lensing, Dark matter, Gravitational lensing formalism, FOS: Physical sciences, General Physics and Astronomy, Astronomy, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Gravitational lens, 13. Climate action, Neutrino, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Weak gravitational lensing, ComputingMilieux_MISCELLANEOUS, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Gravitational lensing due to the large-scale distribution of matter in the cosmos distorts the primordial Cosmic Microwave Background (CMB) and thereby induces new, small-scale $B$-mode polarization. This signal carries detailed information about the distribution of all the gravitating matter between the observer and CMB last scattering surface. We report the first direct evidence for polarization lensing based on purely CMB information, from using the four-point correlations of even- and odd-parity $E$- and $B$-mode polarization mapped over $\sim30$ square degrees of the sky measured by the POLARBEAR experiment. These data were analyzed using a blind analysis framework and checked for spurious systematic contamination using null tests and simulations. Evidence for the signal of polarization lensing and lensing $B$-modes is found at 4.2$\sigma$ (stat.+sys.) significance. The amplitude of matter fluctuations is measured with a precision of $27\%$, and is found to be consistent with the Lambda Cold Dark Matter ($\Lambda$CDM) cosmological model. This measurement demonstrates a new technique, capable of mapping all gravitating matter in the Universe, sensitive to the sum of neutrino masses, and essential for cleaning the lensing $B$-mode signal in searches for primordial gravitational waves., Comment: 7 pages, 3 figures. Matches Physical Review Letters accepted version. Submitted on 11 March 2014; accepted on 25 April 2014. The companion paper (arXiv:1312.6645) describes a measurement of polarization lensing in cross-correlation

Published
2014

24. Gravitational Lensing of Cosmic Microwave Background Polarization

Author

Ade, P. A. R., Akiba, Y., Anthony, A. E., Arnold, K., Barron, D., Boettger, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Flanigan, D., Gilbert, A., Grainger, W., Halverson, N. W., Hasegawa, M., Hattori, K., Hazumi, M., Holzapfel, W. L., Hori, Y., Howard, J., Hyland, P., Inoue, Y., Jaehnig, G. C., Jaffe, A., Keating, B., Kermish, Z., Keskitalo, R., Kisner, T., Le Jeune, M., Lee, A. T., Linder, E., Lungu, M., Matsuda, F., Matsumura, T., Meng, X., Miller, N. J., Morii, H., Moyerman, S., Myers, M. J., Navaroli, M., Nishino, H., Paar, H., Peloton, J., Quealy, E., Rebeiz, G., Reichardt, C. L., Richards, P. L., Ross, C., Schanning, I., Schenck, D. E., Sherwin, B., Shimizu, A., Shimmin, C., Shimon, M., Siritanasak, P., Smecher, G., Spieler, H., Stebor, N., Steinbach, B., Stompor, Radek, Suzuki, A., Takakura, S., Tomaru, T., Wilson, B., Yadav, A., Zahn, O., AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), APC - Gravitation (APC-Gravitation), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, POLARBEAR, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI)

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::Cosmology and Extragalactic Astrophysics
Abstract

8 pages, 4 figures. The companion paper describes a measurement of polarization lensing in cross-correlation; Primary fluctuations in both temperature and polarization of the Cosmic Microwave Background (CMB) reflect the properties of the Universe from the Big Bang until the photons decoupled from matter 380,000 years later. These primary fluctuations are then lensed by large-scale structures (such as clusters of galaxies and filaments of dark matter), with the result that the distribution and properties of dark matter, including the masses of neutrinos, can be determined more accurately by extracting the lensing information than through studying the primary fluctuations alone. Polarization lensing can give cleaner, higher resolution results than temperature lensing. The correlation of lensed CMB polarization with large-scale structure, traced through the Cosmic Infrared Background, was recently detected; however, this correlation does not trace all structure and depends on the relationship between the infrared flux from the galaxies and the underlying mass distribution. Here we report the detection of gravitational lensing directly from CMB polarization measurements. With these data, we have made a census of essentially all structure integrated along the line of sight through the full depth of the observable Universe on 30 square degrees of the sky, and we find good agreement with expectations from the standard Lambda cold-dark matter cosmology.

Published
2013

26. The Urban Indian Student vs. The Integrated School Situation.

Author

Grainger, W. James

Abstract

Urban and non-urban Indians share many of the same disadvantages in relation to academic learning situations. This paper focuses on those disadvantages due to differences in languages, culture, and learning patterns. (Author/RTS)

Published
1978

27. A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND B-MODE POLARIZATION WITH POLARBEAR

Author

ADE, P.A.R., primary, AKIBA, Y., additional, ANTHONY, A.E., additional, ARNOLD, K., additional, ATLAS, M., additional, BARRON, D., additional, BOETTGER, D., additional, BORRILL, J., additional, CHAPMAN, S., additional, CHINONE, Y., additional, DOBBS, M., additional, ELLEFLOT, T., additional, ERRARD, J., additional, FABBIAN, G., additional, FENG, C., additional, FLANIGAN, D., additional, GILBERT, A., additional, GRAINGER, W., additional, HALVERSON, N.W., additional, HASEGAWA, M., additional, HATTORI, K., additional, HAZUMI, M., additional, HOLZAPFEL, W.L., additional, HORI, Y., additional, HOWARD, J., additional, HYLAND, P., additional, INOUE, Y., additional, JAEHNIG, G.C., additional, JAFFE, A.H., additional, KEATING, B., additional, KERMISH, Z., additional, KESKITALO, R., additional, KISNER, T., additional, JEUNE, M. LE, additional, LEE, A.T., additional, LEITCH, E.M., additional, LINDER, E., additional, LUNGU, M., additional, MATSUDA, F., additional, MATSUMURA, T., additional, MENG, X., additional, MILLER, N.J., additional, MORII, H., additional, MOYERMAN, S., additional, MYERS, M.J., additional, NAVAROLI, M., additional, NISHINO, H., additional, ORLANDO, A., additional, PAAR, H., additional, PELOTON, J., additional, POLETTI, D., additional, QUEALY, E., additional, and REBEIZ, G., additional

Published
2015
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28. A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND B-MODE POLARIZATION POWER SPECTRUM AT SUB-DEGREE SCALES WITH POLARBEAR

Author

Ade, PAR, Akiba, Y, Anthony, AE, Arnold, K, Atlas, M, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Flanigan, D, Gilbert, A, Grainger, W, Halverson, NW, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Hori, Y, Howard, J, Hyland, P, Inoue, Y, Jaehnig, GC, Jaffe, AH, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Le Jeune, M, Lee, AT, Leitch, EM, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, MJ, Navaroli, M, Nishino, H, Orlando, A, Paar, H, Peloton, J, Poletti, D, Quealy, E, Rebeiz, G, Reichardt, CL, Richards, PL, Ross, C, Schanning, I, Schenck, DE, Sherwin, BD, Shimizu, A, Shimmin, C, Shimon, M, Siritanasak, P, Smecher, G, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Takakura, S, Tomaru, T, Wilson, B, Yadav, A, Zahn, O, Ade, PAR, Akiba, Y, Anthony, AE, Arnold, K, Atlas, M, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Flanigan, D, Gilbert, A, Grainger, W, Halverson, NW, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Hori, Y, Howard, J, Hyland, P, Inoue, Y, Jaehnig, GC, Jaffe, AH, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Le Jeune, M, Lee, AT, Leitch, EM, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Meng, X, Miller, NJ, Morii, H, Moyerman, S, Myers, MJ, Navaroli, M, Nishino, H, Orlando, A, Paar, H, Peloton, J, Poletti, D, Quealy, E, Rebeiz, G, Reichardt, CL, Richards, PL, Ross, C, Schanning, I, Schenck, DE, Sherwin, BD, Shimizu, A, Shimmin, C, Shimon, M, Siritanasak, P, Smecher, G, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Takakura, S, Tomaru, T, Wilson, B, Yadav, A, and Zahn, O

Abstract

We report a measurement of the B-mode polarization power spectrum in the cosmic microwave background (CMB) using the POLARBEAR experiment in Chile. The faint B-mode polarization signature carries information about the Universe's entire history of gravitational structure formation, and the cosmic inflation that may have occurred in the very early Universe. Our measurement covers the angular multipole range 500 < l < 2100 and is based on observations of an effective sky area of 25 square degrees with 3.5 arcmin resolution at 150 GHz. On these angular scales, gravitational lensing of the CMB by intervening structure in the Universe is expected to be the dominant source of B-mode polarization. Including both systematic and statistical uncertainties, the hypothesis of no B-mode polarization power from gravitational lensing is rejected at 97.2% confidence. The band powers are consistent with the standard cosmological model. Fitting a single lensing amplitude parameter A_BB to the measured band powers, A_BB = 1.12 +/- 0.61 (stat) +0.04/-0.12 (sys) +/- 0.07 (multi), where A_BB = 1 is the fiducial WMAP-9 LCDM value. In this expression, "stat" refers to the statistical uncertainty, "sys" to the systematic uncertainty associated with possible biases from the instrument and astrophysical foregrounds, and "multi" to the calibration uncertainties that have a multiplicative effect on the measured amplitude A_BB.

Published
2014

29. The POLARBEAR-2 Experiment

Author

Suzuki, A, Ade, P, Akiba, Y, Aleman, C, Arnold, K, Atlas, M, Barron, D, Borrill, J, Chapman, S, Chinone, Y, Cukierman, A, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, G, Gilbert, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, W, Hori, Y, Inoue, Y, Jaehnig, G, Katayama, N, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Lee, A, Matsuda, F, Matsumura, T, Morii, H, Moyerman, S, Myers, M, Navaroli, M, Nishino, H, Okamura, T, Reichart, C, Richards, P, Ross, C, Rotermund, K, Sholl, M, Siritanasak, P, Smecher, G, Stebor, N, Stompor, R, Suzuki, J, Takada, S, Takakura, S, Tomaru, T, Wilson, B, Yamaguchi, H, Zahn, O, Suzuki, A, Ade, P, Akiba, Y, Aleman, C, Arnold, K, Atlas, M, Barron, D, Borrill, J, Chapman, S, Chinone, Y, Cukierman, A, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feng, G, Gilbert, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, W, Hori, Y, Inoue, Y, Jaehnig, G, Katayama, N, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Lee, A, Matsuda, F, Matsumura, T, Morii, H, Moyerman, S, Myers, M, Navaroli, M, Nishino, H, Okamura, T, Reichart, C, Richards, P, Ross, C, Rotermund, K, Sholl, M, Siritanasak, P, Smecher, G, Stebor, N, Stompor, R, Suzuki, J, Takada, S, Takakura, S, Tomaru, T, Wilson, B, Yamaguchi, H, and Zahn, O

Published
2014

30. List of Participants

Author

AGNEW, P.A., primary, AL AZZAWI, A.R.H., additional, AL SARRAJ, Karawan, additional, AMADO, Pierre, additional, ARAFA, Salah, additional, AUDU, Mr, additional, BANNISTER, Scott, additional, BARNARD, G, additional, BARP, Bruno, additional, BENTZEN, Erik J., additional, BOA, Thomas W., additional, BOAK, David, additional, BREIDENBACH, H., additional, BROADBENT, S., additional, BURNESS, G M, additional, BURNETT, Norman, additional, BURSTOW, Frank, additional, BUTERA, F, additional, CAMERON, David A., additional, CAVE, Peter R., additional, CHANDLER, Charles, additional, CHOUDHURY, S H, additional, COUTTS, Tim J, additional, CRAWFORD, Mark, additional, EGHOLM, E., additional, DEAN, W F, additional, DONNELLY, Kevin, additional, EL, GAMMEL, additional, ELLIOT, George, additional, EMERY, Michael, additional, EVANS, F C, additional, EZEH, Chuks, additional, FAHAGALLA, M, additional, FLEMING, F W, additional, FRANCIS, E, additional, FRASER, A I, additional, GADDY, J.L., additional, GAIR, S, additional, GALT, Jean, additional, GANAPINI, Walter, additional, GARSIDE, A J, additional, GINN, G W C, additional, GIUFFRIDA, M, additional, GOLDING, Peter, additional, GRAINGER, W, additional, GRANT, S R, additional, GUNN, R, additional, HASSOON, H., additional, HAAHR, Jan, additional, HALLY, Martin, additional, HAMILTON, A R, additional, HANLON, Marion, additional, HANNA, Robert, additional, HARRISON, J D L, additional, HARDY, Mr, additional, HAUGHEY, Douglas, additional, HENDERSON, David M, additional, HOPE, D R, additional, IRVINE, James C, additional, JAMIESON, P, additional, JANUARY, M, additional, de JANUZZI, G Martino, additional, KAMAL, W A, additional, KANYI, D M, additional, KELLEDY, Elaine, additional, KERR, Andrew, additional, KIRKLAND, David, additional, KUROKAWA, K, additional, KWANT, Kees, additional, KYALAANI, F, additional, LEMMA, T, additional, LEWIS, A W, additional, LIDDELL, H, additional, de LIGT, J J, additional, LINDBERG, R, additional, LIPMAN, N, additional, LOCKERBIE, N, additional, LUNDSAGER, Per, additional, MacAULAY, D, additional, MacDONALD, John, additional, MacGREGOR, Kerr, additional, MacKAY, Ian, additional, McKELLAR, D R, additional, McLEAN, Darrell, additional, MacMILLAN, D, additional, McPHEE, W.R., additional, McPHERSON, D J, additional, McWHIRTER, W, additional, MAGUIRE, T, additional, MAGORIAN, D, additional, MARDON, R, additional, MARKS, B, additional, MARTIN, D J, additional, MAYS, I D, additional, MEYNELL, P J, additional, MILLAR, M, additional, MITCHELL, C P, additional, MOWLE, Alan, additional, MUNRO, J S, additional, NAUNTOFTE, Mr, additional, NGOKO, Nelson, additional, OBLADEN, N L, additional, OL'OTABA, S O, additional, OLSEN, H, additional, OTHIENO, H, additional, OTI, Mr, additional, PACETTI, Marco, additional, PEATFIELD, T, additional, POPE, I T, additional, POUND, B, additional, RADWAN, M S, additional, RATTO, C, additional, RIDDELL, John C, additional, REID, A U, additional, ROBERTSON, P, additional, SALUJA, G, additional, SARGENT, M, additional, SCOTT, R, additional, SCHNADT, L, additional, SEEBY, N, additional, SHANKS, DD, additional, SHRESTHA, S, additional, SMITH, H V, additional, SMITH, J, additional, SINTUNOWA, C, additional, SINGH, P N, additional, STEVENSON, W, additional, STRONG, S J, additional, SWET, C J, additional, THOMSON, J S, additional, TONKINSON, T, additional, TOWRIE, J, additional, URASSA, Dominic, additional, URQUHART, D C M, additional, VARDY, A, additional, VAN LIEROP, W E, additional, VAN de VUSSE, T, additional, VERHAART, P, additional, VIS, T, additional, VOLK, M, additional, WATES, N, additional, WATSON, G R, additional, WALDEMARIAM, K, additional, WASSERTHAL, W, additional, WEINGART, J, additional, WELSH, K, additional, WHITE, R, additional, WHITEHURST, B, additional, WILSON, T, additional, WILSON-GOUGH, A K, additional, WOODBRIDGE, K, additional, WOOLLEY, M V, additional, WYPER, Hilary, additional, ZAMBONI, F, additional, PROVEN, G., additional, HIMMEL, M., additional, and ROXBURGH, G., additional

Published
1982
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32. High-significance Sunyaev-Zel'dovich measurement: Abell 1914 seen with the Arcminute Microkelvin Imager

Author

Collaboration, AMI, Barker, R, Biddulph, P, Bly, D, Boysen, R, Brown, A, Clementson, C, Crofts, M, Culverhouse, T, Czeres, J, Dace, R, D'Alessandro, R, Doherty, P, Duffett-Smith, P, Duggan, K, Ely, J, Felvus, M, Flynn, W, Geisbuesch, J, Grainge, K, Grainger, W, Hammet, D, Hills, R, Hobson, M, Holler, C, Jilley, R, Jones, M, Kaneko, T, Kneissl, R, Lancaster, K, Lasenby, A, Marshall, P, Newton, F, Norris, O, Northrop, I, Pooley, G, Quy, V, Saunders, R, Scaife, A, Schofield, J, Scott, P, Shaw, C, Taylor, A, Titterington, D, Velic, M, Waldram, E, West, S, Wood, B, Yassin, G, and Zwart, J

Subjects
Physics, Telescope, Space and Planetary Science, law, Arcminute Microkelvin Imager, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Noise level, law.invention
Abstract

We report the first detection of a Sunyaev-Zel'dovich (S-Z) decrement with the Arcminute Microkelvin Imager (AMI). We have made commissioning observations towards the cluster A1914 and have measured an integrated flux density of -8.61 mJy in a uv-tapered map with noise level 0.19 mJy/beam. We find that the spectrum of the decrement, measured in the six channels between 13.5-18GHz, is consistent with that expected for a S-Z effect. The sensitivity of the telescope is consistent with the figures used in our simulations of cluster surveys with AMI., 5 pages, 6 figures, submitted to MNRAS Letters

Published
2005

34. A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUNDB-MODE POLARIZATION POWER SPECTRUM AT SUB-DEGREE SCALES WITH POLARBEAR

Author

P. A. R. Ade, The Polarbear Collaboration:, primary, Akiba, Y., additional, Anthony, A. E., additional, Arnold, K., additional, Atlas, M., additional, Barron, D., additional, Boettger, D., additional, Borrill, J., additional, Chapman, S., additional, Chinone, Y., additional, Dobbs, M., additional, Elleflot, T., additional, Errard, J., additional, Fabbian, G., additional, Feng, C., additional, Flanigan, D., additional, Gilbert, A., additional, Grainger, W., additional, Halverson, N. W., additional, Hasegawa, M., additional, Hattori, K., additional, Hazumi, M., additional, Holzapfel, W. L., additional, Hori, Y., additional, Howard, J., additional, Hyland, P., additional, Inoue, Y., additional, Jaehnig, G. C., additional, Jaffe, A. H., additional, Keating, B., additional, Kermish, Z., additional, Keskitalo, R., additional, Kisner, T., additional, Le Jeune, M., additional, Lee, A. T., additional, Leitch, E. M., additional, Linder, E., additional, Lungu, M., additional, Matsuda, F., additional, Matsumura, T., additional, Meng, X., additional, Miller, N. J., additional, Morii, H., additional, Moyerman, S., additional, Myers, M. J., additional, Navaroli, M., additional, Nishino, H., additional, Orlando, A., additional, Paar, H., additional, Peloton, J., additional, Poletti, D., additional, Quealy, E., additional, Rebeiz, G., additional, Reichardt, C. L., additional, Richards, P. L., additional, Ross, C., additional, Schanning, I., additional, Schenck, D. E., additional, Sherwin, B. D., additional, Shimizu, A., additional, Shimmin, C., additional, Shimon, M., additional, Siritanasak, P., additional, Smecher, G., additional, Spieler, H., additional, Stebor, N., additional, Steinbach, B., additional, Stompor, R., additional, Suzuki, A., additional, Takakura, S., additional, Tomaru, T., additional, Wilson, B., additional, Yadav, A., additional, and Zahn, O., additional

Published
2014
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35. POLARBEAR CMB Polarization Experiment

Author

Nishino, H., primary, Ade, P., additional, Akiba, Y., additional, Anthony, A., additional, Arnold, K., additional, Barron, D., additional, Boettger, D., additional, Borrill, J., additional, Chapmann, S., additional, Chinone, Y., additional, Dobbs, M. A., additional, Errard, J., additional, Fabbian, G., additional, Feng, C., additional, Flanigan, D., additional, Fuller, G., additional, Ghribi, A., additional, Grainger, W., additional, Halverson, N., additional, Hasegawa, M., additional, Hattori, K., additional, Hazumi, M., additional, Holzapfel, W. L., additional, Howard, J., additional, Hyland, P., additional, Inoue, Y., additional, Jaffe, A., additional, Jaehnig, G., additional, Kaneko, Y., additional, Katayama, N., additional, Keating, B., additional, Kermish, Z., additional, Kimura, N., additional, Kisner, T., additional, Lee, A. T., additional, Le Jeune, M., additional, Linder, E., additional, Lungu, M., additional, Matsuda, F., additional, Matsumura, T., additional, Miller, N. J., additional, Morii, H., additional, Moyerman, S., additional, Myers, M. J., additional, O’Brient, R., additional, Okamura, T., additional, Paar, H., additional, Peloton, J., additional, Quealy, E., additional, Reichardt, C. L., additional, Richards, P. L., additional, Ross, C., additional, Shimizu, A., additional, Shimon, M., additional, Shimmin, C., additional, Sholl, M., additional, Siritanasak, P., additional, Spieler, H., additional, Stebor, N., additional, Steinbach, B., additional, Stompor, R., additional, Suzuki, A., additional, Suzuki, J., additional, Tanaka, K., additional, Tomaru, T., additional, Tucker, C., additional, Yadav, A., additional, and Zahn, O., additional

Published
2014
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36. A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773

Author

Saunders, R., Kneissl, R., Grainge, K., Grainger, W., Jones, M., Maggi, Alessia, Das, R., Edge, A., Lasenby, A., Pooley, G., Miyoshi, S., Tsuruta, T., Yamashita, K., Tawara, Y., Furuzawa, A., Harada, A., Hatsukade, I., and Maggi, Alessia

Subjects
[PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], ComputingMilieux_MISCELLANEOUS
Published
2003

37. The bolometric focal plane array of the POLARBEAR CMB experiment

Author

Holland, WS, Zmuidzinas, J, Arnold, K, Ade, PAR, Anthony, AE, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, MA, Errard, J, Fabbian, G, Flanigan, D, Fuller, G, Ghribi, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Howard, J, Hyland, P, Jaffe, A, Keating, B, Kermish, Z, Kisner, T, Le Jeune, M, Lee, AT, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Miller, NJ, Meng, X, Morii, H, Moyerman, S, Myers, MJ, Nishino, H, Paar, H, Quealy, E, Reichardt, C, Richards, PL, Ross, C, Shimizu, A, Shimmin, C, Shimon, M, Sholl, M, Siritanasak, P, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Tomaru, T, Tucker, C, Zahn, O, Holland, WS, Zmuidzinas, J, Arnold, K, Ade, PAR, Anthony, AE, Barron, D, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, MA, Errard, J, Fabbian, G, Flanigan, D, Fuller, G, Ghribi, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Hazumi, M, Holzapfel, WL, Howard, J, Hyland, P, Jaffe, A, Keating, B, Kermish, Z, Kisner, T, Le Jeune, M, Lee, AT, Linder, E, Lungu, M, Matsuda, F, Matsumura, T, Miller, NJ, Meng, X, Morii, H, Moyerman, S, Myers, MJ, Nishino, H, Paar, H, Quealy, E, Reichardt, C, Richards, PL, Ross, C, Shimizu, A, Shimmin, C, Shimon, M, Sholl, M, Siritanasak, P, Spieler, H, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Tomaru, T, Tucker, C, and Zahn, O

Abstract

The Polarbear Cosmic Microwave Background (CMB) polarization experiment is currently observing from the Atacama Desert in Northern Chile. It will characterize the expected B-mode polarization due to gravitational lensing of the CMB, and search for the possible B-mode signature of inflationary gravitational waves. Its 250 mK focal plane detector array consists of 1,274 polarization-sensitive antenna-coupled bolometers, each with an associated lithographed band-defining filter. Each detector's planar antenna structure is coupled to the telescope's optical system through a contacting dielectric lenslet, an architecture unique in current CMB experiments. We present the initial characterization of this focal plane.

Published
2012

38. A blind detection of a large, complex, Sunyaev–Zel’dovich structure

Author

Shimwell, T., Barker, R., Biddulph, P., Bly, D., Boysen, R., Brown, A., Brown, M., Clementson, C., Crofts, M., Culverhouse, T., Czeres, J., Dace, R., Davies, M., D’Alessandro, R., Doherty, P., Duggan, K., Ely, J., Felvus, M., Feroz, F., Flynn, W., Franzen, Thomas, Geisbusch, J., Genova-Santos, R., Grainge, K., Grainger, W., Hammett, D., Hobson, M., Holler, C., Hurley-Walker, Natasha, Jilley, R., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A., Marshall, P., Newton, F., Norris, O., Northrop, I., Odell, D., Olamaie, M., Perrott, Y., Pober, J., Pooley, G., Pospieszalski, M., Quy, V., Rodriguez-Gonzalvez, C., Saunders, R., Scaife, A., Schammel, M., Schofield, J., Scott, P., Shaw, C., Smith, H., Titterington, D., Velic, M., Waldram, E., West, S., Wood, B., Yassin, G., Zwart, J., Shimwell, T., Barker, R., Biddulph, P., Bly, D., Boysen, R., Brown, A., Brown, M., Clementson, C., Crofts, M., Culverhouse, T., Czeres, J., Dace, R., Davies, M., D’Alessandro, R., Doherty, P., Duggan, K., Ely, J., Felvus, M., Feroz, F., Flynn, W., Franzen, Thomas, Geisbusch, J., Genova-Santos, R., Grainge, K., Grainger, W., Hammett, D., Hobson, M., Holler, C., Hurley-Walker, Natasha, Jilley, R., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A., Marshall, P., Newton, F., Norris, O., Northrop, I., Odell, D., Olamaie, M., Perrott, Y., Pober, J., Pooley, G., Pospieszalski, M., Quy, V., Rodriguez-Gonzalvez, C., Saunders, R., Scaife, A., Schammel, M., Schofield, J., Scott, P., Shaw, C., Smith, H., Titterington, D., Velic, M., Waldram, E., West, S., Wood, B., Yassin, G., and Zwart, J.

Abstract

We present an interesting Sunyaev–Zel’dovich (SZ) detection in the first of the Arcminute Microkelvin Imager (AMI) ‘blind’, degree-square fields to have been observed down to our target sensitivity of 100 µJy beam-1. In follow-up deep pointed observations the SZ effect is detected with a maximum peak decrement greater than eight times the thermal noise. No corresponding emission is visible in the ROSAT all-sky X-ray survey and no cluster is evident in the Palomar all-sky optical survey. Compared with existing SZ images of distant clusters, the extent is large (˜10 arcmin) and complex; our analysis favours a model containing two clusters rather than a single cluster. Our Bayesian analysis is currently limited to modelling each cluster with an ellipsoidal or spherical ß model, which does not do justice to this decrement. Fitting an ellipsoid to the deeper candidate we find the following. (a) Assuming that the Evrard et al. approximation to Press & Schechter correctly gives the number density of clusters as a function of mass and redshift, then, in the search area, the formal Bayesian probability ratio of the AMI detection of this cluster is 7.9 × 104:1; alternatively assuming Jenkins et al. as the true prior, the formal Bayesian probability ratio of detection is 2.1 × 105:1. (b) The cluster mass is MT,200 = 5.5+1.2 -1.3 × 1014h -1 70 M. (c) Abandoning a physical model with number density prior and instead simply modelling the SZ decrement using a phenomenological ß model of temperature decrement as a function of angular distance, we find a central SZ temperature decrement of -295+36 -15 µK – this allows for cosmic microwave background primary anisotropies, receiver noise and radio sources.We are unsure if the cluster system we observe is a merging system or two separate clusters.

Published
2012

40. The Arcminute Microkelvin Imager

Author

Zwart, J., Barker, R., Biddulph, P., Bly, D., Boysen, R., Brown, A., Clementson, C., Crofts, M., Culverhouse, T., Czeres, J., Dace, R., Davies, M., D’Alessandro, R., Doherty, P., Duggan, K., Ely, J., Felvus, M., Feroz, F., Flynn, W., Franzen, Thomas, Geisbusch, J., Genova-Santos, R., Grainge, K., Grainger, W., Hammett, D., Hills, R., Hobson, M., Holler, C., Hurley-Walker, Natasha, Jilley, R., Jones, M., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A., Marshall, P., Newton, F., Norris, O., Northrop, I., Odell, D., Petencin, G., Pober, J., Pooley, G., Pospieszalski, M., Quy, V., Rodriguez-Gonzalvez, C., Saunders, R., Scaife, A., Schofield, J., Scott, P., Shaw, C., Shimwell, T., Smith, H., Taylor, A., Titterington, D., Velic, M., Waldram, E., West, S., Wood, B., Yassin, G., Zwart, J., Barker, R., Biddulph, P., Bly, D., Boysen, R., Brown, A., Clementson, C., Crofts, M., Culverhouse, T., Czeres, J., Dace, R., Davies, M., D’Alessandro, R., Doherty, P., Duggan, K., Ely, J., Felvus, M., Feroz, F., Flynn, W., Franzen, Thomas, Geisbusch, J., Genova-Santos, R., Grainge, K., Grainger, W., Hammett, D., Hills, R., Hobson, M., Holler, C., Hurley-Walker, Natasha, Jilley, R., Jones, M., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A., Marshall, P., Newton, F., Norris, O., Northrop, I., Odell, D., Petencin, G., Pober, J., Pooley, G., Pospieszalski, M., Quy, V., Rodriguez-Gonzalvez, C., Saunders, R., Scaife, A., Schofield, J., Scott, P., Shaw, C., Shimwell, T., Smith, H., Taylor, A., Titterington, D., Velic, M., Waldram, E., West, S., Wood, B., and Yassin, G.

Abstract

The Arcminute Microkelvin Imager is a pair of interferometer arrays operating with sixfrequency channels spanning 13.9–18.2 GHz, for observations on angular scales of 30 arcsec–10 arcmin and for declinations greater than -15?; the Small Array has a sensitivity of30 mJy s-1/2 and the Large Array has a sensitivity of 3mJy s-1/2. The telescope is aimedprincipally at Sunyaev–Zel’dovich imaging of clusters of galaxies. We discuss the design ofthe telescope and describe and explain its electronic and mechanical systems.

Published
2008

41. SPICE EUV spectrometer for the Solar Orbiter mission

Author

Fludra, A., primary, Griffin, D., additional, Caldwell, M., additional, Eccleston, P., additional, Cornaby, J., additional, Drummond, D., additional, Grainger, W., additional, Greenway, P., additional, Grundy, T., additional, Howe, C., additional, McQuirk, C., additional, Middleton, K., additional, Poyntz-Wright, O., additional, Richards, A., additional, Rogers, K., additional, Sawyer, C., additional, Shaughnessy, B., additional, Sidher, S., additional, Tosh, I., additional, Beardsley, S., additional, Burton, G., additional, Marshall, A., additional, Waltham, N., additional, Woodward, S., additional, Appourchaux, T., additional, Philippon, A., additional, Auchere, F., additional, Buchlin, E., additional, Gabriel, A., additional, Vial, J.-C., additional, Schühle, U., additional, Curdt, W., additional, Innes, D., additional, Meining, S., additional, Peter, H., additional, Solanki, S., additional, Teriaca, L., additional, Gyo, M., additional, Büchel, V., additional, Haberreiter, M., additional, Pfiffner, D., additional, Schmutz, W., additional, Carlsson, M., additional, Haugan, S. V., additional, Davila, J., additional, Jordan, P., additional, Thompson, W., additional, Hassler, D., additional, Walls, B., additional, Deforest, C., additional, Hanley, J., additional, Johnson, J., additional, Phelan, P., additional, Blecha, L., additional, Cottard, H., additional, Paciotti, G., additional, Autissier, N., additional, Allemand, Y., additional, Relecom, K., additional, Munro, G., additional, Butler, A., additional, Klein, R., additional, and Gottwald, A., additional

Published
2013
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42. Closed Loop Time Domain Gradient Methods for Parameter and Time Delay Estimation

Author

Behan, M, Cahill, M, Carry, M., Clausen, G, Dooley, V., English, N., Grainger, W., O'Connor, D., O'Dwyer, Aidan, and Ringwood, John

Subjects
Engineering, Controls and Control Theory, Smith predictor, time delay, Estimation
Abstract

This paper discusses the estimation of process parameters and ti me delay, in a Smith predictor structure, using gradient algorithms in the time domain. A number of estimation algorithms are outlined and applied in simulation to the estimation of the parameters of an appropriate process model. An analytical exploration of the technique is also provided.

Published
1997
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43. The bolometric focal plane array of the POLARBEAR CMB experiment

Author

Arnold, K., primary, Ade, P. A. R., additional, Anthony, A. E., additional, Barron, D., additional, Boettger, D., additional, Borrill, J., additional, Chapman, S., additional, Chinone, Y., additional, Dobbs, M. A., additional, Errard, J., additional, Fabbian, G., additional, Flanigan, D., additional, Fuller, G., additional, Ghribi, A., additional, Grainger, W., additional, Halverson, N., additional, Hasegawa, M., additional, Hattori, K., additional, Hazumi, M., additional, Holzapfel, W. L., additional, Howard, J., additional, Hyland, P., additional, Jaffe, A., additional, Keating, B., additional, Kermish, Z., additional, Kisner, T., additional, Le Jeune, M., additional, Lee, A. T., additional, Linder, E., additional, Lungu, M., additional, Matsuda, F., additional, Matsumura, T., additional, Miller, N. J., additional, Meng, X., additional, Morii, H., additional, Moyerman, S., additional, Myers, M. J., additional, Nishino, H., additional, Paar, H., additional, Quealy, E., additional, Reichardt, C., additional, Richards, P. L., additional, Ross, C., additional, Shimizu, A., additional, Shimmin, C., additional, Shimon, M., additional, Sholl, M., additional, Siritanasak, P., additional, Speiler, H., additional, Stebor, N., additional, Steinbach, B., additional, Stompor, R., additional, Suzuki, A., additional, Tomaru, T., additional, Tucker, C., additional, and Zahn, O., additional

Published
2012
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44. Performance of cryogen-free THz detection and passive imaging systems

Author

Wood, K., primary, Doyle, S., additional, Sudiwala, R., additional, Pascale, E., additional, Rowe, S., additional, Hargrave, P., additional, Jones, T., additional, Dunscombe, C., additional, Grainger, W., additional, Papageorgiou, A., additional, Spencer, L., additional, Mauskopf, P., additional, Tucker, C., additional, and Ade, P., additional

Published
2012
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45. KIDCAM — A passive THz imager

Author

Wood, K., primary, Doyle, S., additional, Pascale, E., additional, Rowe, S., additional, Hargrave, P., additional, Dunscombe, C., additional, Grainger, W., additional, Papageorgiou, A., additional, Spencer, L., additional, and Mauskopf, P., additional

Published
2011
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46. The Arcminute Microkelvin Imager★

Author

Zwart, J. T. L., primary, Barker, R. W., additional, Biddulph, P., additional, Bly, D., additional, Boysen, R. C., additional, Brown, A. R., additional, Clementson, C., additional, Crofts, M., additional, Culverhouse, T. L., additional, Czeres, J., additional, Dace, R. J., additional, Davies, M. L., additional, D'Alessandro, R., additional, Doherty, P., additional, Duggan, K., additional, Ely, J. A., additional, Felvus, M., additional, Feroz, F., additional, Flynn, W., additional, Franzen, T. M. O., additional, Geisbüsch, J., additional, Génova-Santos, R., additional, Grainge, K. J. B., additional, Grainger, W. F., additional, Hammett, D., additional, Hills, R. E., additional, Hobson, M. P., additional, Holler, C. M., additional, Hurley-Walker, N., additional, Jilley, R., additional, Jones, M. E., additional, Kaneko, T., additional, Kneissl, R., additional, Lancaster, K., additional, Lasenby, A. N., additional, Marshall, P. J., additional, Newton, F., additional, Norris, O., additional, Northrop, I., additional, Odell, D. M., additional, Petencin, G., additional, Pober, J. C., additional, Pooley, G. G., additional, Pospieszalski, M. W., additional, Quy, V., additional, Rodríguez-Gonzálvez, C., additional, Saunders, R. D. E., additional, Scaife, A. M. M., additional, Schofield, J., additional, Scott, P. F., additional, Shaw, C., additional, Shimwell, T. W., additional, Smith, H., additional, Taylor, A. C., additional, Titterington, D. J., additional, Velić, M., additional, Waldram, E. M., additional, West, S., additional, Wood, B. A., additional, and Yassin, G., additional

Published
2008
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47. A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773

Author

Saunders, R., primary, Kneissl, R., additional, Grainge, K., additional, Grainger, W. F., additional, Jones, M. E., additional, Maggi, A., additional, Das, R., additional, Edge, A. C., additional, Lasenby, A. N., additional, Pooley, G. G., additional, Miyoshi, S. J., additional, Tsuruta, T., additional, Yamashita, K., additional, Tawara, Y., additional, Furuzawa, A., additional, Harada, A., additional, and Hatsukade, I., additional

Published
2003
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48. Closed loop time domain gradient methods for parameter and time delay estimation.

Author

Behan, M., Cahill, M., Carry, M., Clausen, G., Dooley, V., English, N., Grainger, W., O'Connor, David, O'Dwyer, Aidan, Ringwood, John, Behan, M., Cahill, M., Carry, M., Clausen, G., Dooley, V., English, N., Grainger, W., O'Connor, David, O'Dwyer, Aidan, and Ringwood, John

Abstract

This paper discusses the estimation of process parameters and ti me delay, in a Smith predictor structure, using gradient algorithms in the time domain. A number of estimation algorithms are outlined and applied in simulation to the estimation of the parameters of an appropriate process model. An analytical exploration of the technique is also provided.

Published
1997

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