Wide-field lensing mass maps from Dark Energy Survey science verification data: Methodology and detailed analysis

V. Vikram, C. Chang, B. Jain, D. Bacon, A. Amara, M. R. Becker, G. Bernstein, C. Bonnett, S. Bridle, D. Brout, M. Busha, J. Frieman, E. Gaztanaga, W. Hartley, M. Jarvis, T. Kacprzak, A. Kovács, O. Lahav, B. Leistedt, H. LinP. Melchior, H. Peiris, Eduardo Rozo, E. Rykoff, C. Sánchez, E. Sheldon, M. A. Troxel, R. Wechsler, J. Zuntz, T. Abbott, F. B. Abdalla, R. Armstrong, M. Banerji, A. H. Bauer, A. Benoit-Lévy, E. Bertin, D. Brooks, E. Buckley-Geer, D. L. Burke, D. Capozzi, A. Carnero Rosell, M. Carrasco Kind, F. J. Castander, M. Crocce, C. E. Cunha, C. B. D'Andrea, L. N. Da Costa, D. L. Depoy, S. Desai, H. T. Diehl, J. P. Dietrich, J. Estrada, A. E. Evrard, A. Fausti Neto, E. Fernandez, B. Flaugher, P. Fosalba, D. Gerdes, D. Gruen, R. A. Gruendl, K. Honscheid, D. James, S. Kent, K. Kuehn, N. Kuropatkin, T. S. Li, M. A G Maia, M. Makler, M. March, J. Marshall, P. Martini, K. W. Merritt, C. J. Miller, R. Miquel, E. Neilsen, R. C. Nichol, B. Nord, R. Ogando, A. A. Plazas, A. K. Romer, A. Roodman, E. Sanchez, V. Scarpine, I. Sevilla, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E C Swanson, G. Tarle, J. Thaler, D. Thomas, A. R. Walker, J. Weller

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These "mass maps" provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In this paper, we present a weak lensing mass map reconstructed from shear measurements in a 139deg2 area from the Dark Energy Survey (DES) science verification data. We compare the distribution of mass with that of the foreground distribution of galaxies and clusters. The overdensities in the reconstructed map correlate well with the distribution of optically detected clusters. We demonstrate that candidate superclusters and voids along the line of sight can be identified, exploiting the tight scatter of the cluster photometric redshifts. We cross-correlate the mass map with a foreground magnitude-limited galaxy sample from the same data. Our measurement gives results consistent with mock catalogs from N-body simulations that include the primary sources of statistical uncertainties in the galaxy, lensing, and photo-z catalogs. The statistical significance of the cross-correlation is at the 6.8σ level with 20 arcminute smoothing. We find that the contribution of systematics to the lensing mass maps is generally within measurement uncertainties. In this work, we analyze less than 3% of the final area that will be mapped by the DES; the tools and analysis techniques developed in this paper can be applied to forthcoming larger data sets from the survey.

Original languageEnglish (US)
Article number022006
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number2
DOIs
StatePublished - Jul 29 2015

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dark energy
methodology
galaxies
catalogs
smoothing
cross correlation
line of sight
cosmology
sky
voids
dark matter
spatial distribution
shear
probes
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Wide-field lensing mass maps from Dark Energy Survey science verification data : Methodology and detailed analysis. / Vikram, V.; Chang, C.; Jain, B.; Bacon, D.; Amara, A.; Becker, M. R.; Bernstein, G.; Bonnett, C.; Bridle, S.; Brout, D.; Busha, M.; Frieman, J.; Gaztanaga, E.; Hartley, W.; Jarvis, M.; Kacprzak, T.; Kovács, A.; Lahav, O.; Leistedt, B.; Lin, H.; Melchior, P.; Peiris, H.; Rozo, Eduardo; Rykoff, E.; Sánchez, C.; Sheldon, E.; Troxel, M. A.; Wechsler, R.; Zuntz, J.; Abbott, T.; Abdalla, F. B.; Armstrong, R.; Banerji, M.; Bauer, A. H.; Benoit-Lévy, A.; Bertin, E.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Capozzi, D.; Carnero Rosell, A.; Carrasco Kind, M.; Castander, F. J.; Crocce, M.; Cunha, C. E.; D'Andrea, C. B.; Da Costa, L. N.; Depoy, D. L.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Estrada, J.; Evrard, A. E.; Fausti Neto, A.; Fernandez, E.; Flaugher, B.; Fosalba, P.; Gerdes, D.; Gruen, D.; Gruendl, R. A.; Honscheid, K.; James, D.; Kent, S.; Kuehn, K.; Kuropatkin, N.; Li, T. S.; Maia, M. A G; Makler, M.; March, M.; Marshall, J.; Martini, P.; Merritt, K. W.; Miller, C. J.; Miquel, R.; Neilsen, E.; Nichol, R. C.; Nord, B.; Ogando, R.; Plazas, A. A.; Romer, A. K.; Roodman, A.; Sanchez, E.; Scarpine, V.; Sevilla, I.; Smith, R. C.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E C; Tarle, G.; Thaler, J.; Thomas, D.; Walker, A. R.; Weller, J.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 92, No. 2, 022006, 29.07.2015.

Research output: Contribution to journalArticle

Vikram, V, Chang, C, Jain, B, Bacon, D, Amara, A, Becker, MR, Bernstein, G, Bonnett, C, Bridle, S, Brout, D, Busha, M, Frieman, J, Gaztanaga, E, Hartley, W, Jarvis, M, Kacprzak, T, Kovács, A, Lahav, O, Leistedt, B, Lin, H, Melchior, P, Peiris, H, Rozo, E, Rykoff, E, Sánchez, C, Sheldon, E, Troxel, MA, Wechsler, R, Zuntz, J, Abbott, T, Abdalla, FB, Armstrong, R, Banerji, M, Bauer, AH, Benoit-Lévy, A, Bertin, E, Brooks, D, Buckley-Geer, E, Burke, DL, Capozzi, D, Carnero Rosell, A, Carrasco Kind, M, Castander, FJ, Crocce, M, Cunha, CE, D'Andrea, CB, Da Costa, LN, Depoy, DL, Desai, S, Diehl, HT, Dietrich, JP, Estrada, J, Evrard, AE, Fausti Neto, A, Fernandez, E, Flaugher, B, Fosalba, P, Gerdes, D, Gruen, D, Gruendl, RA, Honscheid, K, James, D, Kent, S, Kuehn, K, Kuropatkin, N, Li, TS, Maia, MAG, Makler, M, March, M, Marshall, J, Martini, P, Merritt, KW, Miller, CJ, Miquel, R, Neilsen, E, Nichol, RC, Nord, B, Ogando, R, Plazas, AA, Romer, AK, Roodman, A, Sanchez, E, Scarpine, V, Sevilla, I, Smith, RC, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thaler, J, Thomas, D, Walker, AR & Weller, J 2015, 'Wide-field lensing mass maps from Dark Energy Survey science verification data: Methodology and detailed analysis', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 2, 022006. https://doi.org/10.1103/PhysRevD.92.022006
Vikram, V. ; Chang, C. ; Jain, B. ; Bacon, D. ; Amara, A. ; Becker, M. R. ; Bernstein, G. ; Bonnett, C. ; Bridle, S. ; Brout, D. ; Busha, M. ; Frieman, J. ; Gaztanaga, E. ; Hartley, W. ; Jarvis, M. ; Kacprzak, T. ; Kovács, A. ; Lahav, O. ; Leistedt, B. ; Lin, H. ; Melchior, P. ; Peiris, H. ; Rozo, Eduardo ; Rykoff, E. ; Sánchez, C. ; Sheldon, E. ; Troxel, M. A. ; Wechsler, R. ; Zuntz, J. ; Abbott, T. ; Abdalla, F. B. ; Armstrong, R. ; Banerji, M. ; Bauer, A. H. ; Benoit-Lévy, A. ; Bertin, E. ; Brooks, D. ; Buckley-Geer, E. ; Burke, D. L. ; Capozzi, D. ; Carnero Rosell, A. ; Carrasco Kind, M. ; Castander, F. J. ; Crocce, M. ; Cunha, C. E. ; D'Andrea, C. B. ; Da Costa, L. N. ; Depoy, D. L. ; Desai, S. ; Diehl, H. T. ; Dietrich, J. P. ; Estrada, J. ; Evrard, A. E. ; Fausti Neto, A. ; Fernandez, E. ; Flaugher, B. ; Fosalba, P. ; Gerdes, D. ; Gruen, D. ; Gruendl, R. A. ; Honscheid, K. ; James, D. ; Kent, S. ; Kuehn, K. ; Kuropatkin, N. ; Li, T. S. ; Maia, M. A G ; Makler, M. ; March, M. ; Marshall, J. ; Martini, P. ; Merritt, K. W. ; Miller, C. J. ; Miquel, R. ; Neilsen, E. ; Nichol, R. C. ; Nord, B. ; Ogando, R. ; Plazas, A. A. ; Romer, A. K. ; Roodman, A. ; Sanchez, E. ; Scarpine, V. ; Sevilla, I. ; Smith, R. C. ; Soares-Santos, M. ; Sobreira, F. ; Suchyta, E. ; Swanson, M. E C ; Tarle, G. ; Thaler, J. ; Thomas, D. ; Walker, A. R. ; Weller, J. / Wide-field lensing mass maps from Dark Energy Survey science verification data : Methodology and detailed analysis. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 ; Vol. 92, No. 2.
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abstract = "Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These {"}mass maps{"} provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In this paper, we present a weak lensing mass map reconstructed from shear measurements in a 139deg2 area from the Dark Energy Survey (DES) science verification data. We compare the distribution of mass with that of the foreground distribution of galaxies and clusters. The overdensities in the reconstructed map correlate well with the distribution of optically detected clusters. We demonstrate that candidate superclusters and voids along the line of sight can be identified, exploiting the tight scatter of the cluster photometric redshifts. We cross-correlate the mass map with a foreground magnitude-limited galaxy sample from the same data. Our measurement gives results consistent with mock catalogs from N-body simulations that include the primary sources of statistical uncertainties in the galaxy, lensing, and photo-z catalogs. The statistical significance of the cross-correlation is at the 6.8σ level with 20 arcminute smoothing. We find that the contribution of systematics to the lensing mass maps is generally within measurement uncertainties. In this work, we analyze less than 3{\%} of the final area that will be mapped by the DES; the tools and analysis techniques developed in this paper can be applied to forthcoming larger data sets from the survey.",
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TY - JOUR

T1 - Wide-field lensing mass maps from Dark Energy Survey science verification data

T2 - Methodology and detailed analysis

AU - Vikram, V.

AU - Chang, C.

AU - Jain, B.

AU - Bacon, D.

AU - Amara, A.

AU - Becker, M. R.

AU - Bernstein, G.

AU - Bonnett, C.

AU - Bridle, S.

AU - Brout, D.

AU - Busha, M.

AU - Frieman, J.

AU - Gaztanaga, E.

AU - Hartley, W.

AU - Jarvis, M.

AU - Kacprzak, T.

AU - Kovács, A.

AU - Lahav, O.

AU - Leistedt, B.

AU - Lin, H.

AU - Melchior, P.

AU - Peiris, H.

AU - Rozo, Eduardo

AU - Rykoff, E.

AU - Sánchez, C.

AU - Sheldon, E.

AU - Troxel, M. A.

AU - Wechsler, R.

AU - Zuntz, J.

AU - Abbott, T.

AU - Abdalla, F. B.

AU - Armstrong, R.

AU - Banerji, M.

AU - Bauer, A. H.

AU - Benoit-Lévy, A.

AU - Bertin, E.

AU - Brooks, D.

AU - Buckley-Geer, E.

AU - Burke, D. L.

AU - Capozzi, D.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Castander, F. J.

AU - Crocce, M.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - Da Costa, L. N.

AU - Depoy, D. L.

AU - Desai, S.

AU - Diehl, H. T.

AU - Dietrich, J. P.

AU - Estrada, J.

AU - Evrard, A. E.

AU - Fausti Neto, A.

AU - Fernandez, E.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Gerdes, D.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Honscheid, K.

AU - James, D.

AU - Kent, S.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Li, T. S.

AU - Maia, M. A G

AU - Makler, M.

AU - March, M.

AU - Marshall, J.

AU - Martini, P.

AU - Merritt, K. W.

AU - Miller, C. J.

AU - Miquel, R.

AU - Neilsen, E.

AU - Nichol, R. C.

AU - Nord, B.

AU - Ogando, R.

AU - Plazas, A. A.

AU - Romer, A. K.

AU - Roodman, A.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Sevilla, I.

AU - Smith, R. C.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E C

AU - Tarle, G.

AU - Thaler, J.

AU - Thomas, D.

AU - Walker, A. R.

AU - Weller, J.

PY - 2015/7/29

Y1 - 2015/7/29

N2 - Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These "mass maps" provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In this paper, we present a weak lensing mass map reconstructed from shear measurements in a 139deg2 area from the Dark Energy Survey (DES) science verification data. We compare the distribution of mass with that of the foreground distribution of galaxies and clusters. The overdensities in the reconstructed map correlate well with the distribution of optically detected clusters. We demonstrate that candidate superclusters and voids along the line of sight can be identified, exploiting the tight scatter of the cluster photometric redshifts. We cross-correlate the mass map with a foreground magnitude-limited galaxy sample from the same data. Our measurement gives results consistent with mock catalogs from N-body simulations that include the primary sources of statistical uncertainties in the galaxy, lensing, and photo-z catalogs. The statistical significance of the cross-correlation is at the 6.8σ level with 20 arcminute smoothing. We find that the contribution of systematics to the lensing mass maps is generally within measurement uncertainties. In this work, we analyze less than 3% of the final area that will be mapped by the DES; the tools and analysis techniques developed in this paper can be applied to forthcoming larger data sets from the survey.

AB - Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These "mass maps" provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In this paper, we present a weak lensing mass map reconstructed from shear measurements in a 139deg2 area from the Dark Energy Survey (DES) science verification data. We compare the distribution of mass with that of the foreground distribution of galaxies and clusters. The overdensities in the reconstructed map correlate well with the distribution of optically detected clusters. We demonstrate that candidate superclusters and voids along the line of sight can be identified, exploiting the tight scatter of the cluster photometric redshifts. We cross-correlate the mass map with a foreground magnitude-limited galaxy sample from the same data. Our measurement gives results consistent with mock catalogs from N-body simulations that include the primary sources of statistical uncertainties in the galaxy, lensing, and photo-z catalogs. The statistical significance of the cross-correlation is at the 6.8σ level with 20 arcminute smoothing. We find that the contribution of systematics to the lensing mass maps is generally within measurement uncertainties. In this work, we analyze less than 3% of the final area that will be mapped by the DES; the tools and analysis techniques developed in this paper can be applied to forthcoming larger data sets from the survey.

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