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  1. Article ; Online: Evidence of galaxy cluster motions with the kinematic Sunyaev-Zel'dovich effect.

    Hand, Nick / Addison, Graeme E / Aubourg, Eric / Battaglia, Nick / Battistelli, Elia S / Bizyaev, Dmitry / Bond, J Richard / Brewington, Howard / Brinkmann, Jon / Brown, Benjamin R / Das, Sudeep / Dawson, Kyle S / Devlin, Mark J / Dunkley, Joanna / Dunner, Rolando / Eisenstein, Daniel J / Fowler, Joseph W / Gralla, Megan B / Hajian, Amir /
    Halpern, Mark / Hilton, Matt / Hincks, Adam D / Hlozek, Renée / Hughes, John P / Infante, Leopoldo / Irwin, Kent D / Kosowsky, Arthur / Lin, Yen-Ting / Malanushenko, Elena / Malanushenko, Viktor / Marriage, Tobias A / Marsden, Danica / Menanteau, Felipe / Moodley, Kavilan / Niemack, Michael D / Nolta, Michael R / Oravetz, Daniel / Page, Lyman A / Palanque-Delabrouille, Nathalie / Pan, Kaike / Reese, Erik D / Schlegel, David J / Schneider, Donald P / Sehgal, Neelima / Shelden, Alaina / Sievers, Jon / Sifón, Cristóbal / Simmons, Audrey / Snedden, Stephanie / Spergel, David N / Staggs, Suzanne T / Swetz, Daniel S / Switzer, Eric R / Trac, Hy / Weaver, Benjamin A / Wollack, Edward J / Yeche, Christophe / Zunckel, Caroline

    Physical review letters

    2012  Volume 109, Issue 4, Page(s) 41101

    Abstract: Using high-resolution microwave sky maps made by the Atacama Cosmology Telescope, we for the first time present strong evidence for motions of galaxy clusters and groups via microwave background temperature distortions due to the kinematic Sunyaev-Zel' ... ...

    Abstract Using high-resolution microwave sky maps made by the Atacama Cosmology Telescope, we for the first time present strong evidence for motions of galaxy clusters and groups via microwave background temperature distortions due to the kinematic Sunyaev-Zel'dovich effect. Galaxy clusters are identified by their constituent luminous galaxies observed by the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III. We measure the mean pairwise momentum of clusters, with a probability of the signal being due to random errors of 0.002, and the signal is consistent with the growth of cosmic structure in the standard model of cosmology.
    Language English
    Publishing date 2012-07-27
    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.109.041101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Book ; Online: The BOSS Lyman-alpha Forest Sample from SDSS Data Release 9

    Lee, Khee-Gan / Bailey, Stephen / Bartsch, Leslie E. / Carithers, William / Dawson, Kyle S. / Kirkby, David / Lundgren, Britt / Margala, Daniel / Palanque-Delabrouille, Nathalie / Pieri, Matthew M. / Schlegel, David J. / Weinberg, David H. / Yeche, Christophe / Aubourg, Eric / Bautista, Julian / Bizyaev, Dmitry / Blomqvist, Michael / Bolton, Adam S. / Borde, Arnaud /
    Brewington, Howard / Busca, Nicolas G. / Croft, Rupert A. C. / Delubac, Timothee / Ebelke, Garrett / Eisenstein, Daniel J. / Font-Ribera, Andreu / Ge, Jian / Hamilton, Jean-Christophe / Hennawi, Joseph F. / Ho, Shirley / Honscheid, Klaus / Goff, Jean-Marc Le / Malanushenko, Elena / Malanushenko, Viktor / Miralda-Escude, Jordi / Myers, Adam D. / Noterdaeme, Pasquier / Oravetz, Daniel / Pan, Kaike / Paris, Isabelle / Petitjean, Patrick / Rich, James / Rollinde, Emmanuel / Ross, Nicholas P. / Rossi, Graziano / Schneider, Donald P. / Simmons, Audrey / Snedden, Stephanie / Slosar, Anze / Spergel, David N. / Suzuki, Nao / Viel, Matteo / Weaver, Benjamin A.

    2012  

    Abstract: We present the BOSS Lyman-alpha (Lya) Forest Sample from SDSS Data Release 9, comprising 54,468 quasar spectra with zqso > 2.15 suitable for Lya forest analysis. This data set probes the intergalactic medium with absorption redshifts 2.0 < z_alpha < 5.7 ... ...

    Abstract We present the BOSS Lyman-alpha (Lya) Forest Sample from SDSS Data Release 9, comprising 54,468 quasar spectra with zqso > 2.15 suitable for Lya forest analysis. This data set probes the intergalactic medium with absorption redshifts 2.0 < z_alpha < 5.7 over an area of 3275 square degrees, and encompasses an approximate comoving volume of 20 h^-3 Gpc^3. With each spectrum, we have included several products designed to aid in Lya forest analysis: improved sky masks that flag pixels where data may be unreliable, corrections for known biases in the pipeline estimated noise, masks for the cores of damped Lya systems and corrections for their wings, and estimates of the unabsorbed continua so that the observed flux can be converted to a fractional transmission. The continua are derived using a principal component fit to the quasar spectrum redwards of restframe Lya (lambda > 1216 Ang), extrapolated into the forest region and normalized by a linear function to fit the expected evolution of the Lya forest mean-flux. The estimated continuum errors are ~5% rms. We also discuss possible systematics arising from uncertain spectrophotometry and artifacts in the flux calibration; global corrections for the latter are provided. Our sample provides a convenient starting point for users to analyze clustering in BOSS Lya forest data, and it provides a fiducial data set that can be used to compare results from different analyses of baryon acoustic oscillations in the Lya forest. The full data set is available from the SDSS-III DR9 web site.

    Comment: 15 pages, 11 figures; Submitted to AJ
    Keywords Astrophysics - Cosmology and Nongalactic Astrophysics
    Subject code 333
    Publishing date 2012-11-21
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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