Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space

B. Mawdsley; D. Bacon; P. Melchior; E. Rozo; S. Seitz; N. Jeffrey; M. Gatti; E. Gaztanaga; D. Gruen; W. G. Hartley; B. Hoyle; S. Samuroff; E. Sheldon; M. A. Troxel; J. Zuntz; T. M. C. Abbott; J. Annis; E. Bertin; S. L. Bridle; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; M. Car- rasco Kind; J. Carretero; L. N. da Costa; J. De Vicente; S. Desai; H. T. Diehl; P. Doel; A. E. Evrard; B. Flaugher; P. Fosalba; J. Frieman; J. Garcia-Bellido; D. W. Gerdes; R. A. Gruendl; J. Gschwend; G. Gutierrez; D. L. Hollowood; K. Honscheid; D. J. James; M. Jarvis; T. Jeltema; K. Kuehn; N. Kuropatkin; M. Lima; M. A. G. Maia; R. Miquel; A. A. Plazas; A. Roodman; E. Sanchez; V. Scarpine; S. Serrano; I. Sevilla-Noarbe; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. L. Tucker; V. Vikram

doi:10.1093/mnras/staa565

Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space

B. Mawdsley, D. Bacon, P. Melchior, E. Rozo, S. Seitz, N. Jeffrey, M. Gatti, E. Gaztanaga, D. Gruen, W. G. Hartley, B. Hoyle, S. Samuroff, E. Sheldon, M. A. Troxel, J. Zuntz, T. M. C. Abbott, J. Annis, E. Bertin, S. L. Bridle, D. BrooksE. Buckley-Geer, D. L. Burke, A. Carnero Rosell, M. Car- rasco Kind, J. Carretero, L. N. da Costa, J. De Vicente, S. Desai, H. T. Diehl, P. Doel, A. E. Evrard, B. Flaugher, P. Fosalba, J. Frieman, J. Garcia-Bellido, D. W. Gerdes, R. A. Gruendl, J. Gschwend, G. Gutierrez, D. L. Hollowood, K. Honscheid, D. J. James, M. Jarvis, T. Jeltema, K. Kuehn, N. Kuropatkin, M. Lima, M. A. G. Maia, R. Miquel, A. A. Plazas, A. Roodman, E. Sanchez, V. Scarpine, S. Serrano, I. Sevilla-Noarbe, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, D. L. Tucker, V. Vikram

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Abstract

We present new wide-field weak lensing mass maps for the Year 1 Dark Energy Survey data, generated via a forward fitting approach. This method of producing maps does not impose any prior constraints on the mass distribution to be reconstructed. The technique is found to improve the map reconstruction on the edges of the field compared to the conventional Kaiser-Squires method, which applies a direct inversion on the data; our approach is in good agreement with the previous direct approach in the central regions of the footprint. The mapping technique is assessed and verified with tests on simulations; together with the Kaiser-Squires method, the technique is then applied to data from the Dark Energy Survey Year 1 data and the differences between the two methods are compared. We also produce the first DES measurements of the convergence Minkowski functionals and compare them to those measured in simulations.

Original language	English
Pages (from-to)	5662-5679
Number of pages	18
Journal	Monthly Notices of the Royal Astronomical Society
Volume	493
Issue number	4
Early online date	9 Mar 2020
DOIs	https://doi.org/10.1093/mnras/staa565
Publication status	Published - 1 Apr 2020

Keywords

astro-ph.CO
gravitational lensing: weak
dark matter
large-scale structure of Universe
RCUK
STFC
ST/S000550/1

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staa565
This article has been accepted for publication in MNRAS © 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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Data availability statement for 'Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space'.
Mawdsley, B. (Creator) & Bacon, D. (Creator), Oxford University Press, 9 Mar 2020
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Mawdsley, B., Bacon, D., Melchior, P., Rozo, E., Seitz, S., Jeffrey, N., Gatti, M., Gaztanaga, E., Gruen, D., Hartley, W. G., Hoyle, B., Samuroff, S., Sheldon, E., Troxel, M. A., Zuntz, J., Abbott, T. M. C., Annis, J., Bertin, E., Bridle, S. L., ... Vikram, V. (2020). Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space. Monthly Notices of the Royal Astronomical Society, 493(4), 5662-5679. https://doi.org/10.1093/mnras/staa565

@article{2612bfcc456747e29f2342cb6544c15e,

title = "Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space",

abstract = "We present new wide-field weak lensing mass maps for the Year 1 Dark Energy Survey data, generated via a forward fitting approach. This method of producing maps does not impose any prior constraints on the mass distribution to be reconstructed. The technique is found to improve the map reconstruction on the edges of the field compared to the conventional Kaiser-Squires method, which applies a direct inversion on the data; our approach is in good agreement with the previous direct approach in the central regions of the footprint. The mapping technique is assessed and verified with tests on simulations; together with the Kaiser-Squires method, the technique is then applied to data from the Dark Energy Survey Year 1 data and the differences between the two methods are compared. We also produce the first DES measurements of the convergence Minkowski functionals and compare them to those measured in simulations. ",

keywords = "astro-ph.CO, gravitational lensing: weak, dark matter, large-scale structure of Universe, RCUK, STFC, ST/S000550/1",

author = "B. Mawdsley and D. Bacon and P. Melchior and E. Rozo and S. Seitz and N. Jeffrey and M. Gatti and E. Gaztanaga and D. Gruen and Hartley, {W. G.} and B. Hoyle and S. Samuroff and E. Sheldon and Troxel, {M. A.} and J. Zuntz and Abbott, {T. M. C.} and J. Annis and E. Bertin and Bridle, {S. L.} and D. Brooks and E. Buckley-Geer and Burke, {D. L.} and Rosell, {A. Carnero} and Kind, {M. Car- rasco} and J. Carretero and Costa, {L. N. da} and Vicente, {J. De} and S. Desai and Diehl, {H. T.} and P. Doel and Evrard, {A. E.} and B. Flaugher and P. Fosalba and J. Frieman and J. Garcia-Bellido and Gerdes, {D. W.} and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and Hollowood, {D. L.} and K. Honscheid and James, {D. J.} and M. Jarvis and T. Jeltema and K. Kuehn and N. Kuropatkin and M. Lima and Maia, {M. A. G.} and R. Miquel and Plazas, {A. A.} and A. Roodman and E. Sanchez and V. Scarpine and S. Serrano and I. Sevilla-Noarbe and F. Sobreira and E. Suchyta and Swanson, {M. E. C.} and G. Tarle and Tucker, {D. L.} and V. Vikram",

year = "2020",

month = apr,

day = "1",

doi = "10.1093/mnras/staa565",

language = "English",

volume = "493",

pages = "5662--5679",

journal = "MNRAS",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Mawdsley, B, Bacon, D, Melchior, P, Rozo, E, Seitz, S, Jeffrey, N, Gatti, M, Gaztanaga, E, Gruen, D, Hartley, WG, Hoyle, B, Samuroff, S, Sheldon, E, Troxel, MA, Zuntz, J, Abbott, TMC, Annis, J, Bertin, E, Bridle, SL, Brooks, D, Buckley-Geer, E, Burke, DL, Rosell, AC, Kind, MCR, Carretero, J, Costa, LND, Vicente, JD, Desai, S, Diehl, HT, Doel, P, Evrard, AE, Flaugher, B, Fosalba, P, Frieman, J, Garcia-Bellido, J, Gerdes, DW, Gruendl, RA, Gschwend, J, Gutierrez, G, Hollowood, DL, Honscheid, K, James, DJ, Jarvis, M, Jeltema, T, Kuehn, K, Kuropatkin, N, Lima, M, Maia, MAG, Miquel, R, Plazas, AA, Roodman, A, Sanchez, E, Scarpine, V, Serrano, S, Sevilla-Noarbe, I, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Tucker, DL & Vikram, V 2020, 'Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space', Monthly Notices of the Royal Astronomical Society, vol. 493, no. 4, pp. 5662-5679. https://doi.org/10.1093/mnras/staa565

TY - JOUR

T1 - Dark Energy Survey Year 1 Results

T2 - wide field mass maps via forward fitting in harmonic space

AU - Mawdsley, B.

AU - Bacon, D.

AU - Melchior, P.

AU - Rozo, E.

AU - Seitz, S.

AU - Jeffrey, N.

AU - Gatti, M.

AU - Gaztanaga, E.

AU - Gruen, D.

AU - Hartley, W. G.

AU - Hoyle, B.

AU - Samuroff, S.

AU - Sheldon, E.

AU - Troxel, M. A.

AU - Zuntz, J.

AU - Abbott, T. M. C.

AU - Annis, J.

AU - Bertin, E.

AU - Bridle, S. L.

AU - Brooks, D.

AU - Buckley-Geer, E.

AU - Burke, D. L.

AU - Rosell, A. Carnero

AU - Kind, M. Car- rasco

AU - Carretero, J.

AU - Costa, L. N. da

AU - Vicente, J. De

AU - Desai, S.

AU - Diehl, H. T.

AU - Doel, P.

AU - Evrard, A. E.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - Garcia-Bellido, J.

AU - Gerdes, D. W.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - James, D. J.

AU - Jarvis, M.

AU - Jeltema, T.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Lima, M.

AU - Maia, M. A. G.

AU - Miquel, R.

AU - Plazas, A. A.

AU - Roodman, A.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Serrano, S.

AU - Sevilla-Noarbe, I.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E. C.

AU - Tarle, G.

AU - Tucker, D. L.

AU - Vikram, V.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - We present new wide-field weak lensing mass maps for the Year 1 Dark Energy Survey data, generated via a forward fitting approach. This method of producing maps does not impose any prior constraints on the mass distribution to be reconstructed. The technique is found to improve the map reconstruction on the edges of the field compared to the conventional Kaiser-Squires method, which applies a direct inversion on the data; our approach is in good agreement with the previous direct approach in the central regions of the footprint. The mapping technique is assessed and verified with tests on simulations; together with the Kaiser-Squires method, the technique is then applied to data from the Dark Energy Survey Year 1 data and the differences between the two methods are compared. We also produce the first DES measurements of the convergence Minkowski functionals and compare them to those measured in simulations.

AB - We present new wide-field weak lensing mass maps for the Year 1 Dark Energy Survey data, generated via a forward fitting approach. This method of producing maps does not impose any prior constraints on the mass distribution to be reconstructed. The technique is found to improve the map reconstruction on the edges of the field compared to the conventional Kaiser-Squires method, which applies a direct inversion on the data; our approach is in good agreement with the previous direct approach in the central regions of the footprint. The mapping technique is assessed and verified with tests on simulations; together with the Kaiser-Squires method, the technique is then applied to data from the Dark Energy Survey Year 1 data and the differences between the two methods are compared. We also produce the first DES measurements of the convergence Minkowski functionals and compare them to those measured in simulations.

KW - astro-ph.CO

KW - gravitational lensing: weak

KW - dark matter

KW - large-scale structure of Universe

KW - RCUK

KW - STFC

KW - ST/S000550/1

U2 - 10.1093/mnras/staa565

DO - 10.1093/mnras/staa565

M3 - Article

VL - 493

SP - 5662

EP - 5679

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 4

ER -

Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space

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Keywords

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Data availability statement for 'Dark Energy Survey Year 1 Results: wide field mass maps via forward fitting in harmonic space'.

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