Browsing by Author "Hasselfield, M."

Now showing 1 - 9 of 9
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    Atacama Cosmology Telescope : Component-separated maps of CMB temperature and the thermal Sunyaev-Zel'dovich effect
    (2020) Madhavacheril, M. S.; Hill, J. C.; Naes, S.; Addison, G. E.; Aiola, S.; Baildon, T.; Battaglia, N.; Bean, R.; Bond, J. R.; Dünner Planella, Rolando; Calabrese, E.; Calafut, V.; Choi, S. K.; Darwish, O.; Datta, R.; Devlin, M. J.; Dunkley, J.; Ferraro, S.; Gallardo, P. A.; Gluscevic, V.; Halpern, M.; Han, D. W.; Hasselfield, M.; Hilton, M.; Hincks, A. D.; Hlozek, R.; Ho, S. P. P.; Huffenberger, K. M.; Hughes, J. P.; Koopman, B. J.; Kosowsky, A.; Lokken, M.; Louis, T.; Lungu, M.; MacInnis, A.; Maurin, Loïc Benjamin; McMahon, J. J.; Moodley, K.; Nati, F.; Niemack, M. D.; Page, L. A.; Partridge, B.; Robertson, N.; Sehgal, N.; Schaan, E.; Schillaci, A.; Sherwin, B. D.; Sifon, C.; Simon, S. M.; Spergel, D. N.
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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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    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 : Data Characterization and Map Making
    (2013) Dunner Planella, Rolando; Hasselfield, M.; Marriage, T.; Sievers, J.; Acquaviva, V.; Addison, G.; Ade, P.; Aguirre Aparicio, Paula; Barrientos, Luis Felipe; Infante Lira, Leopoldo; Quintana, H. et al.
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    The Atacama Cosmology Telescope : Dynamical Masses and Scaling Relations for a Sample of Massive Sunyaev-Zel'dovich Effect Selected Galaxy Clusters
    (2013) Sifon, C.; Menanteau, F.; Hasselfield, M.; Marriage, T.; Hughes, J.; Barrientos, Luis Felipe; González, J.; Infante Lira, Leopoldo; Addison, G.; Baker, A.; Battaglia, N.; Bond, J.; Crichton, D.; Dunner, R. et al.
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    The Atacama Cosmology Telescope: A Measurement of the 600 < ell < 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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    The Atacama Cosmology Telescope: Beam Measurements and the Microwave Brightness Temperatures of Uranus and Saturn
    (2013) Hasselfield, M.; Dünner Planella, Rolando; Gallardo Matamala, Patricio Andrés.
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    The Atacama Cosmology Telescope: cross correlation with Planck maps
    (2014) Louis, T.; Addison, G.; Hasselfield, M.; Bond, J.; Calabrese, E.; Das, S.; Dunner Planella, Rolando; Infante Lira, Leopoldo
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    Weak-lensing mass calibration of the Atacama Cosmology Telescope equatorial Sunyaev-Zeldovich cluster sample with the Canada-France-Hawaii telescope stripe 82 survey
    (2016) Battaglia, N.; Leauthaud, A.; Miyatake, H.; Hasselfield, M.; Grallad, M.; Allison, R.; Calabrese, E.; Devlin, M.; Erben, T.; Dünner Planella, Rolando; Ferrara, S.; Halpern, M.; Hilton, M.; Hill, J.; Hincks, A.; Hlozek, R.