Search

Your search keyword '"large-scale structure of Universe [gravitational lensing]"' showing total 3 results
Start Over Descriptor "large-scale structure of Universe [gravitational lensing]" Topic weak [gravitational lensing]
3 results on '"large-scale structure of Universe [gravitational lensing]"'

1. Inference from the small scales of cosmic shear with current and future Dark Energy Survey data

Author

G. Gutierrez, Shantanu Desai, Marcelle Soares-Santos, T. Kacprzak, Robert Armstrong, Marcos Lima, Adam Amara, J. Annis, David J. James, Erin Sheldon, David Brooks, I. Sevilla-Noarbe, Tim Eifler, A. Benoit-Lévy, Kyler Kuehn, Felipe Menanteau, Pablo Fosalba, D. L. Burke, Elisabeth Krause, Risa H. Wechsler, Jennifer L. Marshall, L. N. da Costa, Gregory Tarle, J. Aleksić, Claudio Bruderer, S. Allam, Eli S. Rykoff, Daniel Gruen, Robert A. Gruendl, E. Suchyta, August E. Evrard, V. Vikram, Ramon Miquel, A. K. Romer, Alexandre Refregier, Martin Crocce, V. Scarpine, Daniel Thomas, M. E. C. Swanson, D. W. Gerdes, A. Carnero Rosell, E. M. Huff, M. Jarvis, Dragan Huterer, Peter Doel, Francisco J. Castander, M. Carrasco Kind, K. Honscheid, H. T. Diehl, Peter Melchior, Niall MacCrann, A. A. Plazas, J. Carretero, Daniel A. Goldstein, J. P. Dietrich, B. Flaugher, Nikolay Kuropatkin, Sarah Bridle, Scott Dodelson, Chihway Chang, Carlos E. Cunha, T. M. C. Abbott, E. J. Sanchez, Joe Zuntz, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DES, Institut d'Astrophysique de Paris ( IAP ), and Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Cosmology and Gravitation, Active galactic nucleus, Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, gravitational lensing: weak, weak [gravitational lensing], 0103 physical sciences, Galaxy formation and evolution, 010303 astronomy & astrophysics, weak, Large-scale structure of Universe [Gravitational lensing], Galaxy cluster, Weak gravitational lensing, STFC, QB, Physics, COSMIC cancer database, 010308 nuclear & particles physics, Astronomy, RCUK, Astronomy and Astrophysics, Galaxy, Space and Planetary Science, Dark energy, astro-ph.CO, Halo, large-scale structure of Universe, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Monthly Notices of the Royal Astronomical Society, 465 (3), ISSN:0035-8711, ISSN:1365-2966, ISSN:1365-8711

Published
2017

2. Cosmic Voids and Void Lensing in the Dark Energy Survey Science Verification Data

Author

C. B. D'Andrea, A. A. Plazas, P. Vielzeuf, A. Benoit-Lévy, Jennifer L. Marshall, W. G. Hartley, F. B. Abdalla, Martin Crocce, Peter Doel, M. Carrasco Kind, M. Jarvis, G. Gutierrez, H. T. Diehl, K. Honscheid, Jochen Weller, R. C. Smith, Erin Sheldon, David Brooks, Enrique Gaztanaga, Michael Schubnell, Dragan Huterer, T. M. C. Abbott, J. Carretero, Eli S. Rykoff, E. J. Sanchez, Peter Melchior, J. P. Dietrich, Risa H. Wechsler, Adam Amara, Kevin Reil, Joseph DeRose, A. Carnero Rosell, David J. James, Attila Kovács, J. Annis, Kyler Kuehn, M. A. G. Maia, Nico Hamaus, Gary Bernstein, Pablo Fosalba, Ofer Lahav, Carlos E. Cunha, B. Flaugher, Juan Garcia-Bellido, Joe Zuntz, Bhuvnesh Jain, Eduardo Rozo, Flavia Sobreira, Shantanu Desai, Gregory Tarle, Robert A. Gruendl, E. Bertin, R. A. Bernstein, Joshua A. Frieman, E. Suchyta, August E. Evrard, C. Bonnett, Elisabeth Krause, I. Sevilla-Noarbe, L. N. da Costa, Ramon Miquel, C. Sánchez, Seshadri Nadathur, A. K. Romer, A. Fausti Neto, Joseph Clampitt, Marcos Lima, Alistair R. Walker, Marcelle Soares-Santos, Daniel Thomas, E. Buckley-Geer, Daniel Gruen, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DES, Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Barcelona Inst Sci & Technol, Univ Penn, Ctr Invest Energet Medioambientales & Tecnol CIEM, Univ Portsmouth, Stanford Univ, SLAC Natl Accelerator Lab, Univ Munich, Univ Michigan, ETH, UCL, Inst Catalana Rec & Estudis Avancats, Univ Arizona, Brookhaven Natl Lab, Univ Manchester, Natl Opt Astron Observ, Rhodes Univ, Fermilab Natl Accelerator Lab, CNRS, UPMC Univ Paris 06, Carnegie Observ, Lab Interinst Astron LIneA, Observ Nacl, Univ Illinois, Natl Ctr Supercomp Applicat, CSIC, Univ Southampton, Excellence Cluster Univ, Univ Chicago, Ohio State Univ, Australian Astron Observ, Universidade de São Paulo (USP), Texas A&M Univ, Princeton Univ, CALTECH, Univ Sussex, Universidade Estadual Paulista (Unesp), Oak Ridge Natl Lab, and Max Planck Inst Extraterr Phys

Subjects
Cosmology and Gravitation, Void (astronomy), Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Dark matter, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, gravitational lensing: weak, weak [gravitational lensing], 0103 physical sciences, 010303 astronomy & astrophysics, STFC, Weak gravitational lensing, Astrophysics::Galaxy Astrophysics, QB, weak, Cosmology: observations, Large-scale structure of Universe [Gravitational lensing], Physics, 010308 nuclear & particles physics, RCUK, Astronomy, Astronomy and Astrophysics, Radius, observations [cosmology], Galaxy, Redshift, Space and Planetary Science, cosmology: observations, astro-ph.CO, Dark energy, large-scale structure of Universe, Giant Void, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

osmic voids are usually identified in spectroscopic galaxy surveys, where 3D information about the large-scale structure of the Universe is available. Although an increasing amount of photometric data is being produced, its potential for void studies is limited since photometric redshifts induce line-of-sight position errors of ≥50 Mpc h−1 which can render many voids undetectable. We present a new void finder designed for photometric surveys, validate it using simulations, and apply it to the high-quality photo-z redMaGiC galaxy sample of the DES Science Verification data. The algorithm works by projecting galaxies into 2D slices and finding voids in the smoothed 2D galaxy density field of the slice. Fixing the line-of-sight size of the slices to be at least twice the photo-z scatter, the number of voids found in simulated spectroscopic and photometric galaxy catalogues is within 20 per cent for all transverse void sizes, and indistinguishable for the largest voids (Rv ≥ 70 Mpc h−1). The positions, radii, and projected galaxy profiles of photometric voids also accurately match the spectroscopic void sample. Applying the algorithm to the DES-SV data in the redshift range 0.2 < z < 0.8, we identify 87 voids with comoving radii spanning the range 18–120 Mpc h−1, and carry out a stacked weak lensing measurement. With a significance of 4.4σ, the lensing measurement confirms that the voids are truly underdense in the matter field and hence not a product of Poisson noise, tracer density effects or systematics in the data. It also demonstrates, for the first time in real data, the viability of void lensing studies in photometric surveys., Monthly Notices of the Royal Astronomical Society, 465 (1), ISSN:0035-8711, ISSN:1365-2966, ISSN:1365-8711

Published
2017

3. Results of the GREAT08 Challenge: an image analysis competition for cosmological lensing

Author

Bridle, Sarah, Balan, Sreekumar T., Bethge, Matthias, Gentile, Marc, Harmeling, Stefan, Heymans, Catherine, Hirsch, Michael, Hosseini, Reshad, Jarvis, Mike, Kirk, Donnacha, Kitching, Thomas, Kuijken, Konrad, Lewis, Antony, Paulin-Henriksson, Stephane, Schoelkopf, Bernhard, Velander, Malin, Voigt, Lisa, Witherick, Dugan, Amara, Adam, Bernstein, Gary, Courbin, Frederic, Gill, Mandeep, Heavens, Alan, Mandelbaum, Rachel, Massey, Richard, Moghaddam, Baback, Rassat, Anais, Refregier, Alexandre, Rhodes, Jason, Schrabback, Tim, Shawe-Taylor, John, Shmakova, Marina, Van Waerbeke, Ludovic, and Wittman, David

Subjects
statistical [Methods], Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, techniques: image processing, gravitational lensing: weak, Large-scale structure of Universe, Intrinsic Alignments, Galaxy Shape Measurement, image processing [Techniques], Weak, data analysis [Methods], observations [Cosmology], Tomography, methods: statistical, Power Spectra, Requirements, Redshift, methods: data analysis, Dark Energy, weak, Methods: data analysis, Methods: statistical, Techniques: image processing, Cosmology: observations, Large-scale structure of universe [Gravitational lensing], cosmology: observations, Calibration, Cosmic Shear, large-scale structure of Universe, weak [Gravitational lensing], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Monthly Notices of the Royal Astronomical Society, 405 (3), ISSN:0035-8711, ISSN:1365-2966, ISSN:1365-8711

Catalog

Books, media, physical & digital resources
See catalog results