Browsing by Author "Marriage, T. A."

Now showing 1 - 9 of 9
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    A kilopixel array of TES bolometers for ACT
    (2008) Niemack, M. D.; Zhao, Y.; Wollack, E.; Thornton, R.; Switzer, E. R.; Swetz, D. S.; Staggs, S. T.; Page, L.; Stryzak, O.; Moseley, H.; Marriage, T. A.; Limon, M.; Lau, J. M.; Klein, J.; Kaul, M.; Jarosik, N.; Irwin, K. D.; Hincks, A. D.; Hilton, G. C.; Halpern, M.; Fowler, J. W.; Fisher, R. P.; Duenner, R.; Doriese, W. B.; Dicker, S. R.; Devlin, M. J.; Chervenak, J.; Burger, B.; Battistelli, E. S.; Appel, J.; Amiri, M.; Allen, C.; Aboobaker, A. M.
    The Millimeter Bolometer Array Camera (MBAC) will be installed on the 6-meter Atacama Cosmology Telescope (ACT) in late 2007. For the first season of observations, MBAC will comprise a 145 GHz diffraction-limited, 1024-pixel, focal plane array of Transition Edge Sensor (TES) Bolometers. This will be the largest array of pop-up-detector bolometers ever fielded as well as one of the largest arrays of TES bolometers. We discuss the design specifications for the array and pre-assembly testing procedures for the cryogenic components. We present dark measurements of the TES bolometer properties of numerous 32-pixel columns that have been assembled into the first kilopixel array for ACT, as well as optical measurements made with our 256-pixel prototype array, including first light measurements on ACT.
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    Atacama Cosmology Telescope : Dusty Star-forming Galaxies and Active Galactic Nuclei in the Equatorial Survey
    (2020) Gralla, M. B.; Marriage, T. A.; Addison, G.; Baker, A. J.; Bond, J. R.; Crichton, D.; Datta, R.; Devlin, M. J.; Dunkley, J.; Dünner Planella, Rolando; Fowler, J.; Gallardo, P. A.; Hall, K.; Halpern, M.; Hasselfield, M.; Hilton, M.; Hincks, A. D.; Huffenberger, K. M.; Hughes, J. P.; Kosowsky, A.; Lopez Caraballo, C. H.; Louis, T.; Marsden, D.; Moodley, K.; Niemack, M. D.; Page, L. A.; Partridge, B.; Rivera, J.; Sievers, J. L.; Staggs, S.; Su, T.; Swetz, D.; Wollack, E. J.
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    Quantifying the thermal Sunyaev-Zel'dovich effect and excess millimetre emission in quasar environments
    (2019) Hall, K. R.; Zakamska, N. L.; Addison, G. E.; Battaglia, N.; Crichton, D.; Devlin, M.; Dunkley, J.; Gralla, M.; Hill, J. C.; Maurin, Loïc Benjamin; Hilton, M.; Hubmayr, J.; Hughes, J. P.; Huffenberger, K. M.; Kosowsky, A.; Marriage, T. A.; Moodley, K.; Niemack, M. D.; Page, L. A.; Partridge, B.; Planella, R. D.; Schillaci, A.; Sifon, C.; Staggs, S. T.; Wollack, E. J.; Xu, Z. L.
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    The Atacama Cosmology Telescope (ACT): Beam Profiles and First SZ Cluster Maps
    (2010) Hincks, A. D.; Acquaviva, V.; Ade, P. A. R.; Aguirre, P.; Amiri, M.; Appel, J. W.; Barrientos, L. F.; Battistelli, E. S.; Bond, J. R.; Brown, B.; Burger, B.; Chervenak, J.; Das, S.; Devlin, M. J.; Dicker, S. R.; Doriese, W. B.; Dunkley, J.; Dünner, R.; Essinger-Hileman, T.; Fisher, R. P.; Fowler, J. W.; Hajian, A.; Halpern, M.; Hasselfield, M.; Hernández-Monteagudo, C.; Hilton, G. C.; Hilton, M.; Hlozek, R.; Huffenberger, K. M.; Hughes, D. H.; Hughes, J. P.; Infante, L.; Irwin, K. D.; Jimenez, R.; Juin, J. B.; Kaul, M.; Klein, J.; Kosowsky, A.; Lau, J. M.; Limon, M.; Lin, Y. -T.; Lupton, R. H.; Marriage, T. A.; Marsden, D.; Martocci, K.; Mauskopf, P.; Menanteau, F.; Moodley, K.; Moseley, H.; Netterfield, C. B.; Niemack, M. D.; Nolta, M. R.; Page, L. A.; Parker, L.; Partridge, B.; Quintana, H.; Reid, B.; Sehgal, N.; Sievers, J.; Spergel, D. N.; Staggs, S. T.; Stryzak, O.; Swetz, D. S.; Switzer, E. R.; Thornton, R.; Trac, H.; Tucker, C.; Verde, L.; Warne, R.; Wilson, G.; Wollack, E.; Zhao, Y.
    The Atacama Cosmology Telescope (ACT) is currently observing the cosmic microwave background with arcminute resolution at 148 GHz, 218 GHz, and 277 GHz. In this paper, we present ACT's first results. Data have been analyzed using a maximum-likelihood map-making method which uses B-splines to model and remove the atmospheric signal. It has been used to make high-precision beam maps from which we determine the experiment's window functions. This beam information directly impacts all subsequent analyses of the data. We also used the method to map a sample of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect and show five clusters previously detected with X-ray or SZ observations. We provide integrated Compton-y measurements for each cluster. Of particular interest is our detection of the z = 0.44 component of A3128 and our current non-detection of the low-redshift part, providing strong evidence that the further cluster is more massive as suggested by X-ray measurements. This is a compelling example of the redshift-independent mass selection of the SZ effect.
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    The Atacama Cosmology Telescope: A Catalog of >4000 Sunyaev-Zel'dovich Galaxy Clusters
    (2021) Hilton, M.; Sifon, C.; Naess, S.; Madhavacheril, M.; Oguri, M.; Rozo, E.; Rykoff, E.; Abbott, T. M. C.; Adhikari, S.; Aguena, M.; Aiola, S.; Allam, S.; Amodeo, S.; Amon, A.; Annis, J.; Ansarinejad, B.; Aros-Bunster, C.; Austermann, J. E.; Avila, S.; Bacon, D.; Battaglia, N.; Beall, J. A.; Becker, D. T.; Bernstein, G. M.; Bertin, E.; Bhandarkar, T.; Bhargava, S.; Bond, J. R.; Brooks, D.; Burke, D. L.; Calabrese, E.; Carrasco Kind, M.; Carretero, J.; Choi, S. K.; Choi, A.; Conselice, C.; Costa, L. N. da; Costanzi, M.; Crichton, D.; Crowley, K. T.; Dunner, R.; Denison, E. V.; Devlin, M. J.; Dicker, S. R.; Diehl, H. T.; Dietrich, J. P.; Doel, P.; Duff, S. M.; Duivenvoorden, A. J.; Dunkley, J.; Everett, S.; Ferraro, S.; Ferrero, I.; Ferte, A.; Flaugher, B.; Frieman, J.; Gallardo, P. A.; Garcia-Bellido, J.; Gaztanaga, E.; Gerdes, D. W.; Giles, P.; Golec, J. E.; Gralla, M. B.; Grandis, S.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Han, D.; Hartley, W. G.; Hasselfield, M.; Hill, J. C.; Hilton, G. C.; Hincks, A. D.; Hinton, S. R.; Ho, S-P. P.; Honscheid, K.; Hoyle, B.; Hubmayr, J.; Huffenberger, K. M.; Hughes, J. P.; Jaelani, A. T.; Jain, B.; James, D. J.; Jeltema, T.; Kent, S.; Knowles, K.; Koopman, B. J.; Kuehn, K.; Lahav, O.; Lima, M.; Lin, Y-T.; Lokken, M.; Loubser, S. I.; MacCrann, N.; Maia, M. A. G.; Marriage, T. A.; Martin, J.; McMahon, J.; Melchior, P.; Menanteau, F.; Miquel, R.; Miyatake, H.; Moodley, K.; Morgan, R.; Mroczkowski, T.; Nati, F.; Newburgh, L. B.; Niemack, M. D.; Nishizawa, A. J.; Ogando, R. L. C.; Orlowski-Scherer, J.; Page, L. A.; Palmese, A.; Partridge, B.; Paz-Chinchon, F.; Phakathi, P.; Plazas, A. A.; Robertson, N. C.; Romer, A. K.; Rosell, A. Carnero; Salatino, M.; Sanchez, E.; Schaan, E.; Schillaci, A.; Sehgal, N.; Serrano, S.; Shin, T.; Simon, S. M.; Smith, M.; Soares-Santos, M.; Spergel, D. N.; Staggs, S. T.; Storer, E. R.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thomas, D.; To, C.; Trac, H.; Ullom, J. N.; Vale, L. R.; Lanen, J. Van; Vavagiakis, E. M.; Vicente, J. De; Wilkinson, R. D.; Wollack, E. J.; Xu, Z.; Zhang, Y.
    We present a catalog of 4195 optically confirmed Sunyaev-Zel'dovich (SZ) selected galaxy clusters detected with signal-to-noise ratio >4 in 13,211 deg(2) of sky surveyed by the Atacama Cosmology Telescope (ACT). Cluster candidates were selected by applying a multifrequency matched filter to 98 and 150 GHz maps constructed from ACT observations obtained from 2008 to 2018 and confirmed using deep, wide-area optical surveys. The clusters span the redshift range 0.04 < z < 1.91 (median z = 0.52). The catalog contains 222 z > 1 clusters, and a total of 868 systems are new discoveries. Assuming an SZ signal versus mass-scaling relation calibrated from X-ray observations, the sample has a 90% completeness mass limit of M-500c > 3.8 x 10(14) M, evaluated at z = 0.5, for clusters detected at signal-to-noise ratio >5 in maps filtered at an angular scale of 24. The survey has a large overlap with deep optical weak-lensing surveys that are being used to calibrate the SZ signal mass-scaling relation, such as the Dark Energy Survey (4566 deg(2)), the Hyper Suprime-Cam Subaru Strategic Program (469 deg(2)), and the Kilo Degree Survey (825 deg(2)). We highlight some noteworthy objects in the sample, including potentially projected systems, clusters with strong lensing features, clusters with active central galaxies or star formation, and systems of multiple clusters that may be physically associated. The cluster catalog will be a useful resource for future cosmological analyses and studying the evolution of the intracluster medium and galaxies in massive clusters over the past 10 Gyr.
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    THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE 600 < ℓ < 8000 COSMIC MICROWAVE BACKGROUND POWER SPECTRUM AT 148 GHz
    (2010) Fowler, J. W.; Acquaviva, V.; Ade, P. A. R.; Aguirre, P.; Amiri, M.; Appel, J. W.; Barrientos, L. F.; Battistelli, E. S.; Bond, J. R.; Brown, B.; Burger, B.; Chervenak, J.; Das, S.; Devlin, M. J.; Dicker, S. R.; Doriese, W. B.; Dunkley, J.; Dünner, R.; Essinger-Hileman, T.; Fisher, R. P.; Hajian, A.; Halpern, M.; Hasselfield, M.; Hernández-Monteagudo, C.; Hilton, G. C.; Hilton, M.; Hincks, A. D.; Hlozek, R.; Huffenberger, K. M.; Hughes, D. H.; Hughes, J. P.; Infante, L.; Irwin, K. D.; Jimenez, R.; Juin, J. B.; Kaul, M.; Klein, J.; Kosowsky, A.; Lau, J. M.; Limon, M.; Lin, Y. -T.; Lupton, R. H.; Marriage, T. A.; Marsden, D.; Martocci, K.; Mauskopf, P.; Menanteau, F.; Moodley, K.; Moseley, H.; Netterfield, C. B.; Niemack, M. D.; Nolta, M. R.; Page, L. A.; Parker, L.; Partridge, B.; Quintana, H.; Reid, B.; Sehgal, N.; Sievers, J.; Spergel, D. N.; Staggs, S. T.; Swetz, D. S.; Switzer, E. R.; Thornton, R.; Trac, H.; Tucker, C.; Verde, L.; Warne, R.; Wilson, G.; Wollack, E.; Zhao, Y.
    We present a measurement of the angular power spectrum of the cosmic microwave background (CMB) radiation observed at 148 GHz. The measurement uses maps with 1'.4 angular resolution made with data from the Atacama Cosmology Telescope (ACT). The observations cover 228 deg(2) of the southern sky, in a 4 degrees.2 wide strip centered on declination 53 degrees south. The CMB at arcminute angular scales is particularly sensitive to the Silk damping scale, to the Sunyaev-Zel'dovich (SZ) effect from galaxy clusters, and to emission by radio sources and dusty galaxies. After masking the 108 brightest point sources in our maps, we estimate the power spectrum between 600 < l < 8000 using the adaptive multi-taper method to minimize spectral leakage and maximize use of the full data set. Our absolute calibration is based on observations of Uranus. To verify the calibration and test the fidelity of our map at large angular scales, we cross-correlate the ACT map to the WMAP map and recover the WMAP power spectrum from 250 < l < 1150. The power beyond the Silk damping tail of the CMB (l similar to 5000) is consistent with models of the emission from point sources. We quantify the contribution of SZ clusters to the power spectrum by fitting to a model normalized to sigma(8) = 0.8. We constrain the model's amplitude A(SZ) < 1.63 (95% CL). If interpreted as a measurement of sigma(8), this implies sigma(SZ)(8) < 0.86 (95% CL) given our SZ model. A fit of ACT and WMAP five-year data jointly to a six-parameter Lambda CDM model plus point sources and the SZ effect is consistent with these results.
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    Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations : 40 GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance
    (2020) Xu, Z.; Brewer, M. K.; Fluxá Rojas, Pedro Antonio; Li, Y. Y.; Osumi, K.; Pradenas, B.; Ali, A.; Appel, J. W.; Bennett, C. L.; Dünner Planella, Rolando; Bustos, R.; Chan, M. W.; Chuss, D. T.; Cleary, J.; Couto, J. D.; Dahal, S.; Datta, R.; Denis, K. L.; Eimer, J. R.; Essinger Hileman, T.; Gothe, D.; Harrington, K.; Iuliano, J.; Karakla, J.; Marriage, T. A.; Miller, N. J.; Núñez, C.; Padilla, I. L.; Parker, L.; Petroff, M. A.; Reeves, R.; Rostem, K.; Nunes Valle, D. A.; Watts, D. J.; Weiland, J. L.; Wollack, E. J.
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    Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations : A First Detection of Atmospheric Circular Polarization at Q band
    (2020) Petroff, M. A.; Eimer, J. R.; Harrington, K.; Ali, A.; Appel, J. W.; Bennett, C. L.; Brewer, M. K.; Bustos, R.; Dünner Planella, Rolando; Fluxá Rojas, Pedro Antonio; Chan, M. W.; Chuss, D. T.; Cleary, J.; Couto, J. D.; Dahal, S.; Essinger Hileman, T.; Gothe, D.; Iuliano, J.; Marriage, T. A.; Miller, N. J.; Núñez, C.; Padilla, I. L.; Parker, L.; Reeves, R.; Rostem, K.; Nunes Valle, D. A.; Watts, D. J.; Weiland, J. L.; Wollack, E. J.; Xu, Z.
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    Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: A Measurement of Circular Polarization at 40 GHz
    (2020) Padilla, I. L.; Eimer, J. R.; Li, Y.; Addison, G. E.; Ali, A.; Appel, J. W.; Bennett, C. L.; Bustos, R.; Dünner Planella, Rolando; Fluxá Rojas, Pedro Antonio; Brewer, M. K.; Chan, M. W.; Chuss, D. T.; Cleary, J.; Couto, J.; Dahal, S.; Denis, K.; Essinger Hileman, T.; Gothe, D.; Haridas, S. K.; Harrington, K.; Iuliano, J.; Karakla, J.; Marriage, T. A.; Miller, N. J.; Núñez, C.; Parker, L.; Petroff, M. A.; Reeves, R.; Rostem, K.; Stevens, R. W.; Nunes Valle, D. A.; Watts, D. J.; Weiland, J. L.; Wollack, E. J.; Xu, Z.