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  1. Article ; Online: Measurement of a Cosmographic Distance Ratio with Galaxy and Cosmic Microwave Background Lensing.

    Miyatake, Hironao / Madhavacheril, Mathew S / Sehgal, Neelima / Slosar, Anže / Spergel, David N / Sherwin, Blake / van Engelen, Alexander

    Physical review letters

    2017  Volume 118, Issue 16, Page(s) 161301

    Abstract: We measure the gravitational lensing shear signal around dark matter halos hosting constant mass galaxies using light sources at z∼1 (background galaxies) and at the surface of last scattering at z∼1100 (the cosmic microwave background). The galaxy shear ...

    Abstract We measure the gravitational lensing shear signal around dark matter halos hosting constant mass galaxies using light sources at z∼1 (background galaxies) and at the surface of last scattering at z∼1100 (the cosmic microwave background). The galaxy shear measurement uses data from the CFHTLenS survey, and the microwave background shear measurement uses data from the Planck satellite. The ratio of shears from these cross-correlations provides a purely geometric distance measurement across the longest possible cosmological lever arm. This is because the matter distribution around the halos, including uncertainties in galaxy bias and systematic errors such as miscentering, cancels in the ratio for halos in thin redshift slices. We measure this distance ratio in three different redshift slices of the constant mass (CMASS) sample and combine them to obtain a 17% measurement of the distance ratio, r=0.390_{-0.062}^{+0.070}, at an effective redshift of z=0.53. This is consistent with the predicted ratio from the Planck best-fit cold dark matter model with a cosmological constant cosmology of r=0.419.
    Language English
    Publishing date 2017-04-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.118.161301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Book ; Online: The Atacama Cosmology Telescope

    Mallaby-Kay, Maya / Atkins, Zachary / Aiola, Simone / Amodeo, Stefania / Austermann, Jason E. / Beall, James A. / Becker, Daniel T. / Bond, J. Richard / Calabrese, Erminia / Chesmore, Grace E. / Choi, Steve K. / Crowley, Kevin T. / Darwish, Omar / Denison, Edwawd V. / Devlin, Mark J. / Duff, Shannon M. / Duivenvoorden, Adriaan J. / Dunkley, Jo / Ferraro, Simone /
    Fichman, Kyra / Gallardo, Patricio A. / Golec, Joseph E. / Guan, Yilun / Han, Dongwon / Hasselfield, Matthew / Hill, J. Colin / Hilton, Gene C. / Hilton, Matt / Hlozek, Renee / Hubmayr, Johannes / Huffenberger, Kevin M. / Hughes, John P. / Koopman, Brian J. / Louis, Thibaut / MacInnis, Amanda / Madhavacheril, Mathew S. / McMahon, Jeff / Moodley, Kavilan / Naess, Sigurd / Namikawa, Toshiya / Nati, Federico / Newburgh, Laura B. / Nibarger, John P. / Niemack, Michael D. / Page, Lyman A. / Salatino, Maria / Schaan, Emmanuel / Schillaci, Alessandro / Sehgal, Neelima / Sherwin, Blake D. / Sifon, Cristobal / Simon, Sara / Staggs, Suzanne T. / Storer, Emilie R. / Ullom, Joel N. / Van Engelen, Alexander / Van Lanen, Jeff / Vale, Leila R. / Wollack, Edward J. / Xu, Zhilei

    Summary of DR4 and DR5 Data Products and Data Access

    2021  

    Abstract: Two recent large data releases for the Atacama Cosmology Telescope (ACT), called DR4 and DR5, are available for public access. These data include temperature and polarization maps that cover nearly half the sky at arcminute resolution in three frequency ... ...

    Abstract Two recent large data releases for the Atacama Cosmology Telescope (ACT), called DR4 and DR5, are available for public access. These data include temperature and polarization maps that cover nearly half the sky at arcminute resolution in three frequency bands; lensing maps and component-separated maps covering ~ 2,100 deg^2 of sky; derived power spectra and cosmological likelihoods; a catalog of over 4,000 galaxy clusters; and supporting ancillary products including beam functions and masks. The data and products are described in a suite of ACT papers; here we provide a summary. In order to facilitate ease of access to these data we present a set of Jupyter IPython notebooks developed to introduce users to DR4, DR5, and the tools needed to analyze these data. The data products (excluding simulations) and the set of notebooks are publicly available on the NASA Legacy Archive for Microwave Background Data Analysis (LAMBDA); simulation products are available on the National Energy Research Scientific Computing Center (NERSC).

    Comment: Accepted to ApJS. 21 pages, 8 figures. Data and notebooks available on LAMBDA https://lambda.gsfc.nasa.gov/product/act/
    Keywords Astrophysics - Cosmology and Nongalactic Astrophysics
    Subject code 306
    Publishing date 2021-03-04
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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