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  1. Article ; Online: Detection of Cross-Correlation between Gravitational Lensing and γ Rays.

    Ammazzalorso, S / Gruen, D / Regis, M / Camera, S / Ando, S / Fornengo, N / Bechtol, K / Bridle, S L / Choi, A / Eifler, T F / Gatti, M / MacCrann, N / Omori, Y / Samuroff, S / Sheldon, E / Troxel, M A / Zuntz, J / Carrasco Kind, M / Annis, J /
    Avila, S / Bertin, E / Brooks, D / Burke, D L / Carnero Rosell, A / Carretero, J / Castander, F J / Costanzi, M / da Costa, L N / De Vicente, J / Desai, S / Diehl, H T / Dietrich, J P / Doel, P / Everett, S / Flaugher, B / Fosalba, P / García-Bellido, J / Gaztanaga, E / Gerdes, D W / Giannantonio, T / Goldstein, D A / Gruendl, R A / Gutierrez, G / Hollowood, D L / Honscheid, K / James, D J / Jarvis, M / Jeltema, T / Kent, S / Kuropatkin, N / Lahav, O / Li, T S / Lima, M / Maia, M A G / Marshall, J L / Melchior, P / Menanteau, F / Miquel, R / Ogando, R L C / Palmese, A / Plazas, A A / Romer, A K / Roodman, A / Rykoff, E S / Sánchez, C / Sanchez, E / Scarpine, V / Serrano, S / Sevilla-Noarbe, I / Smith, M / Soares-Santos, M / Sobreira, F / Suchyta, E / Swanson, M E C / Tarle, G / Thomas, D / Vikram, V / Zhang, Y

    Physical review letters

    2020  Volume 124, Issue 10, Page(s) 101102

    Abstract: In recent years, many γ-ray sources have been identified, yet the unresolved component hosts valuable information on the faintest emission. In order to extract it, a cross-correlation with gravitational tracers of matter in the Universe has been shown to ...

    Abstract In recent years, many γ-ray sources have been identified, yet the unresolved component hosts valuable information on the faintest emission. In order to extract it, a cross-correlation with gravitational tracers of matter in the Universe has been shown to be a promising tool. We report here the first identification of a cross-correlation signal between γ rays and the distribution of mass in the Universe probed by weak gravitational lensing. We use data from the Dark Energy Survey Y1 weak lensing data and the Fermi Large Area Telescope 9-yr γ-ray data, obtaining a signal-to-noise ratio of 5.3. The signal is mostly localized at small angular scales and high γ-ray energies, with a hint of correlation at extended separation. Blazar emission is likely the origin of the small-scale effect. We investigate implications of the large-scale component in terms of astrophysical sources and particle dark matter emission.
    Language English
    Publishing date 2020-03-26
    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.124.101102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Correlations.

    To, C / Krause, E / Rozo, E / Wu, H / Gruen, D / Wechsler, R H / Eifler, T F / Rykoff, E S / Costanzi, M / Becker, M R / Bernstein, G M / Blazek, J / Bocquet, S / Bridle, S L / Cawthon, R / Choi, A / Crocce, M / Davis, C / DeRose, J /
    Drlica-Wagner, A / Elvin-Poole, J / Fang, X / Farahi, A / Friedrich, O / Gatti, M / Gaztanaga, E / Giannantonio, T / Hartley, W G / Hoyle, B / Jarvis, M / MacCrann, N / McClintock, T / Miranda, V / Pereira, M E S / Park, Y / Porredon, A / Prat, J / Rau, M M / Ross, A J / Samuroff, S / Sánchez, C / Sevilla-Noarbe, I / Sheldon, E / Troxel, M A / Varga, T N / Vielzeuf, P / Zhang, Y / Zuntz, J / Abbott, T M C / Aguena, M / Amon, A / Annis, J / Avila, S / Bertin, E / Bhargava, S / Brooks, D / Burke, D L / Carnero Rosell, A / Carrasco Kind, M / Carretero, J / Chang, C / Conselice, C / da Costa, L N / Davis, T M / Desai, S / Diehl, H T / Dietrich, J P / Everett, S / Evrard, A E / Ferrero, I / Flaugher, B / Fosalba, P / Frieman, J / García-Bellido, J / Gruendl, R A / Gutierrez, G / Hinton, S R / Hollowood, D L / Honscheid, K / Huterer, D / James, D J / Jeltema, T / Kron, R / Kuehn, K / Kuropatkin, N / Lima, M / Maia, M A G / Marshall, J L / Menanteau, F / Miquel, R / Morgan, R / Muir, J / Myles, J / Palmese, A / Paz-Chinchón, F / Plazas, A A / Romer, A K / Roodman, A / Sanchez, E / Santiago, B / Scarpine, V / Serrano, S / Smith, M / Suchyta, E / Swanson, M E C / Tarle, G / Thomas, D / Tucker, D L / Weller, J / Wester, W / Wilkinson, R D

    Physical review letters

    2021  Volume 126, Issue 14, Page(s) 141301

    Abstract: We present the first joint analysis of cluster abundances and auto or cross-correlations of three cosmic tracer fields: galaxy density, weak gravitational lensing shear, and cluster density split by optical richness. From a joint analysis (4×2pt+N) of ... ...

    Abstract We present the first joint analysis of cluster abundances and auto or cross-correlations of three cosmic tracer fields: galaxy density, weak gravitational lensing shear, and cluster density split by optical richness. From a joint analysis (4×2pt+N) of cluster abundances, three cluster cross-correlations, and the auto correlations of the galaxy density measured from the first year data of the Dark Energy Survey, we obtain Ω_{m}=0.305_{-0.038}^{+0.055} and σ_{8}=0.783_{-0.054}^{+0.064}. This result is consistent with constraints from the DES-Y1 galaxy clustering and weak lensing two-point correlation functions for the flat νΛCDM model. Consequently, we combine cluster abundances and all two-point correlations from across all three cosmic tracer fields (6×2pt+N) and find improved constraints on cosmological parameters as well as on the cluster observable-mass scaling relation. This analysis is an important advance in both optical cluster cosmology and multiprobe analyses of upcoming wide imaging surveys.
    Language English
    Publishing date 2021-04-23
    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.126.141301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  3. Book ; Online: DES Y1 results

    Muir, J. / Baxter, E. / Miranda, V. / Doux, C. / Ferté, A. / Leonard, C. D. / Huterer, D. / Jain, B. / Lemos, P. / Raveri, M. / Nadathur, S. / Campos, A. / Chen, A. / Dodelson, S. / Elvin-Poole, J. / Lee, S. / Secco, L. F. / Troxel, M. A. / Weaverdyck, N. /
    Zuntz, J. / Brout, D. / Choi, A. / Crocce, M. / Davis, T. M. / Gruen, D. / Krause, E. / Lidman, C. / MacCrann, N. / Möller, A. / Prat, J. / Ross, A. J. / Sako, M. / Samuroff, S. / Sáchez, C. / Scolnic, D. / Zhang, B. / Abbott, T. M. C. / Aguena, M. / Allam, S. / Annis, J. / Avila, S. / Bacon, D. / Bertin, E. / Bhargava, S. / Bridle, S. L. / Brooks, D. / Burke, D. L. / Rosell, A. Carnero / Kind, M. Carrasco / Carretero, J. / Cawthon, R. / Costanzi, M. / da Costa, L. N. / Pereira, M. E. S. / Desai, S. / Diehl, H. T. / Dietrich, J. P. / Doel, P. / Estrada, J. / Everett, S. / Evrard, A. E. / Ferrero, I. / Flaugher, B. / Frieman, J. / García-Bellido, J. / Giannantonio, T. / Gruendl, R. A. / Gschwend, J. / Gutierrez, G. / Hinton, S. R. / Hollowood, D. L. / Honscheid, K. / Hoyle, B. / James, D. J. / Jeltema, T. / Kuehn, K. / Kuropatkin, N. / Lahav, O. / Lima, M. / Maia, M. A. G. / Menanteau, F. / Miquel, R. / Morgan, R. / Myles, J. / Palmese, A. / Paz-Chinchón, F. / Plazas, A. A. / Romer, A. K. / Roodman, A. / Sanchez, E. / Scarpine, V. / Serrano, S. / Sevilla-Noarbe, I. / Smith, M. / Suchyta, E. / Swanson, M. E. C. / Tarle, G. / Thomas, D. / To, C. / Tucker, D. L. / Varga, T. N. / Weller, J. / Wilkinson, R. D.

    Splitting growth and geometry to test $\Lambda$CDM

    2020  

    Abstract: We analyze Dark Energy Survey (DES) data to constrain a cosmological model where a subset of parameters -- focusing on $\Omega_m$ -- are split into versions associated with structure growth (e.g. $\Omega_m^{\rm grow}$) and expansion history (e.g. $\ ... ...

    Abstract We analyze Dark Energy Survey (DES) data to constrain a cosmological model where a subset of parameters -- focusing on $\Omega_m$ -- are split into versions associated with structure growth (e.g. $\Omega_m^{\rm grow}$) and expansion history (e.g. $\Omega_m^{\rm geo}$). Once the parameters have been specified for the $\Lambda$CDM cosmological model, which includes general relativity as a theory of gravity, it uniquely predicts the evolution of both geometry (distances) and the growth of structure over cosmic time. Any inconsistency between measurements of geometry and growth could therefore indicate a breakdown of that model. Our growth-geometry split approach therefore serves as both a (largely) model-independent test for beyond-$\Lambda$CDM physics, and as a means to characterize how DES observables provide cosmological information. We analyze the same multi-probe DES data as arXiv:1811.02375 : DES Year 1 (Y1) galaxy clustering and weak lensing, which are sensitive to both growth and geometry, as well as Y1 BAO and Y3 supernovae, which probe geometry. We additionally include external geometric information from BOSS DR12 BAO and a compressed Planck 2015 likelihood, and external growth information from BOSS DR12 RSD. We find no significant disagreement with $\Omega_m^{\rm grow}=\Omega_m^{\rm geo}$. When DES and external data are analyzed separately, degeneracies with neutrino mass and intrinsic alignments limit our ability to measure $\Omega_m^{\rm grow}$, but combining DES with external data allows us to constrain both growth and geometric quantities. We also consider a parameterization where we split both $\Omega_m$ and $w$, but find that even our most constraining data combination is unable to separately constrain $\Omega_m^{\rm grow}$ and $w^{\rm grow}$. Relative to $\Lambda$CDM, splitting growth and geometry weakens bounds on $\sigma_8$ but does not alter constraints on $h$.

    Comment: 35 pages, 18 figures. Updated to match published version
    Keywords Astrophysics - Cosmology and Nongalactic Astrophysics
    Subject code 612
    Publishing date 2020-10-12
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Cosmological Constraints from Multiple Probes in the Dark Energy Survey.

    Abbott, T M C / Alarcon, A / Allam, S / Andersen, P / Andrade-Oliveira, F / Annis, J / Asorey, J / Avila, S / Bacon, D / Banik, N / Bassett, B A / Baxter, E / Bechtol, K / Becker, M R / Bernstein, G M / Bertin, E / Blazek, J / Bridle, S L / Brooks, D /
    Brout, D / Burke, D L / Calcino, J / Camacho, H / Campos, A / Carnero Rosell, A / Carollo, D / Carrasco Kind, M / Carretero, J / Castander, F J / Cawthon, R / Challis, P / Chan, K C / Chang, C / Childress, M / Crocce, M / Cunha, C E / D'Andrea, C B / da Costa, L N / Davis, C / Davis, T M / De Vicente, J / DePoy, D L / DeRose, J / Desai, S / Diehl, H T / Dietrich, J P / Dodelson, S / Doel, P / Drlica-Wagner, A / Eifler, T F / Elvin-Poole, J / Estrada, J / Evrard, A E / Fernandez, E / Flaugher, B / Foley, R J / Fosalba, P / Frieman, J / Galbany, L / García-Bellido, J / Gatti, M / Gaztanaga, E / Gerdes, D W / Giannantonio, T / Glazebrook, K / Goldstein, D A / Gruen, D / Gruendl, R A / Gschwend, J / Gutierrez, G / Hartley, W G / Hinton, S R / Hollowood, D L / Honscheid, K / Hoormann, J K / Hoyle, B / Huterer, D / Jain, B / James, D J / Jarvis, M / Jeltema, T / Kasai, E / Kent, S / Kessler, R / Kim, A G / Kokron, N / Krause, E / Kron, R / Kuehn, K / Kuropatkin, N / Lahav, O / Lasker, J / Lemos, P / Lewis, G F / Li, T S / Lidman, C / Lima, M / Lin, H / Macaulay, E / MacCrann, N / Maia, M A G / March, M / Marriner, J / Marshall, J L / Martini, P / McMahon, R G / Melchior, P / Menanteau, F / Miquel, R / Mohr, J J / Morganson, E / Muir, J / Möller, A / Neilsen, E / Nichol, R C / Nord, B / Ogando, R L C / Palmese, A / Pan, Y-C / Peiris, H V / Percival, W J / Plazas, A A / Porredon, A / Prat, J / Romer, A K / Roodman, A / Rosenfeld, R / Ross, A J / Rykoff, E S / Samuroff, S / Sánchez, C / Sanchez, E / Scarpine, V / Schindler, R / Schubnell, M / Scolnic, D / Secco, L F / Serrano, S / Sevilla-Noarbe, I / Sharp, R / Sheldon, E / Smith, M / Soares-Santos, M / Sobreira, F / Sommer, N E / Swann, E / Swanson, M E C / Tarle, G / Thomas, D / Thomas, R C / Troxel, M A / Tucker, B E / Uddin, S A / Vielzeuf, P / Walker, A R / Wang, M / Weaverdyck, N / Wechsler, R H / Weller, J / Yanny, B / Zhang, B / Zhang, Y / Zuntz, J

    Physical review letters

    2019  Volume 122, Issue 17, Page(s) 171301

    Abstract: The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Survey has measured 207 spectroscopically confirmed type Ia supernova light ... ...

    Abstract The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Survey has measured 207 spectroscopically confirmed type Ia supernova light curves, the baryon acoustic oscillation feature, weak gravitational lensing, and galaxy clustering. Here we present combined results from these probes, deriving constraints on the equation of state, w, of dark energy and its energy density in the Universe. Independently of other experiments, such as those that measure the cosmic microwave background, the probes from this single photometric survey rule out a Universe with no dark energy, finding w=-0.80_{-0.11}^{+0.09}. The geometry is shown to be consistent with a spatially flat Universe, and we obtain a constraint on the baryon density of Ω_{b}=0.069_{-0.012}^{+0.009} that is independent of early Universe measurements. These results demonstrate the potential power of large multiprobe photometric surveys and pave the way for order of magnitude advances in our constraints on properties of dark energy and cosmology over the next decade.
    Language English
    Publishing date 2019-05-20
    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.122.171301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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