Core or Cusps: The Central Dark Matter Profile of a Strong Lensing Cluster with a Bright Central Image at Redshift 1 [Core or Cusps: The Central Dark Matter Profile of a Redshift One Strong Lensing Cluster with a Bright Central Image]

Collett, Thomas E.; Buckley-Geer, Elizabeth; Lin, Huan; Bacon, David; Nichol, Robert C.; Nord, Brian; Morice-Atkinson, Xan; Amara, Adam; Birrer, Simon; Kuropatkin, Nikolay; More, Anupreeta; Papovich, Casey; Romer, Kathy K.; Tessore, Nicolas; Abbott, Tim M. C.; Allam, Sahar; Annis, James; Benoit-Levy, Aurlien; Brooks, David; Burke, David L.; Kind, Matias Carrasco; Castander, Francisco Javier J.; D’Andrea, Chris B.; da Costa, Luiz N.; Desai, Shantanu; Diehl, H. Thomas; Doel, Peter; Eifler, Tim F.; Flaugher, Brenna; Frieman, Josh; Gerdes, David W.; Goldstein, Daniel A.; Gruen, Daniel; Gschwend, Julia; Gutierrez, Gaston; James, David J.; Kuehn, Kyler; Kuhlmann, Steve; Lahav, Ofer; Li, Ting S.; Lima, Marcos; Maia, Marcio A. G.; March, Marisa; Marshall, Jennifer L.; Martini, Paul; Melchior, Peter; Miquel, Ramon; Plazas, Andrs A.; Rykoff, Eli S.; Sanchez, Eusebio; Scarpine, Vic; Schindler, Rafe; Schubnell, Michael; Sevilla-Noarbe, Ignacio; Smith, Mathew; Sobreira, Flavia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Tucker, Douglas L.; Walker, Alistair R.

doi:10.3847/1538-4357/aa76e6

Title: Core or Cusps: The Central Dark Matter Profile of a Strong Lensing Cluster with a Bright Central Image at Redshift 1 [Core or Cusps: The Central Dark Matter Profile of a Redshift One Strong Lensing Cluster with a Bright Central Image]

Journal Article · Mon Jul 10 00:00:00 EDT 2017 · The Astrophysical Journal (Online)

DOI:https://doi.org/10.3847/1538-4357/aa76e6· OSTI ID:1374390

^[1]; Buckley-Geer, Elizabeth ^[2];

^[2];

^[1]; Nichol, Robert C. ^[1];

^[2]; Morice-Atkinson, Xan ^[1]; Amara, Adam ^[3];

^[4]; Kuropatkin, Nikolay ^[2];

^[5];

^[6]; Romer, Kathy K. ^[7];

^[8];

^[9]; Allam, Sahar ^[2];

^[2]; Benoit-Levy, Aurlien ^[10];

^[11]; Burke, David L. ^[12] more »

Univ. of Portsmouth, Portsmouth (United Kingdom)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
ETH Zurich, Zurich (Switzerland)
ETH Zurich, Zurich (Switzerland); Univ. of California, Los Angeles, CA (United States)
The Univ. of Tokyo, Chiba (Japan)
Texas A & M Univ., College Station, TX (United States)
Univ. of Sussex, Brighton (United Kingdom)
Univ. of Manchester, Manchester (United Kingdom)
National Optical Astronomy Observatory, La Serena (Chile)
Institut d'Astrophysique de Paris, Paris (France); Univ. College London, London (United Kingdom)
Univ. College London, London (United Kingdom)
Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. of Illinois, Urbana, IL (United States); National Center for Supercomputing Applications, Urbana, IL (United States)
Institut de Ciencies de l'Espai, Barcelona (Spain)
Univ. of Pennsylvania, Philadelphia, PA (United States)
Lab. Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro (Brazil); Observatorio Nacional, Rio de Janeiro (Brazil)
IIT Hyderabad, Telangana (India)
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
Univ. of Michigan, Ann Arbor, MI (United States)
Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
National Optical Astronomy Observatory, La Serena (Chile); Univ. of Washington, Seattle, WA (United States)
Australian Astronomical Observatory, North Ryde, NSW (Australia)
Argonne National Lab. (ANL), Lemont, IL (United States)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Texas A & M Univ., College Station, TX (United States)
Lab. Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro (Brazil); Univ. de Sao Paulo, Sao Paulo (Brazil)
The Ohio State Univ., Columbus, OH (United States)
Princeton Univ., Princeton, NJ (United States)
Institucio Catalana de Recerca i Estudis Avancats, Barcelona (Spain); The Barcelona Institute of Science and Technology, Bellaterra (Barcelona) (Spain)
Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. of Southampton, Southampton (United Kingdom)
Lab. Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro (Brazil); Univ. Estadual de Campinas, Campinas (Brazil)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
National Center for Supercomputing Applications, Urbana, IL (United States)

We report on SPT-CLJ2011-5228, a giant system of arcs created by a cluster at z = 1.06. The arc system is notable for the presence of a bright central image. The source is a Lyman break galaxy at zs= 2.39 and the mass enclosed within the Einstein ring of radius 14 arcsec is . We perform a full reconstruction of the light profile of the lensed images to precisely infer the parameters of the mass distribution. The brightness of the central image demands that the central total density profile of the lens be shallow. By fitting the dark matter as a generalized Navarro-Frenk-White profile - with a free parameter for the inner density slope - we find that the break radius is kpc, and that the inner density falls with radius to the power -0.38 ±0.04 at 68% confidence. Such a shallow profile is in strong tension with our understanding of relaxed cold dark matter halos; dark matter-only simulations predict that the inner density should fall as . The tension can be alleviated if this cluster is in fact a merger; a two-halo model can also reconstruct the data, with both clumps (density varying as and ) much more consistent with predictions from dark matter-only simulations. At the resolution of our Dark Energy Survey imaging, we are unable to choose between these two models, but we make predictions for forthcoming Hubble Space Telescope imaging that will decisively distinguish between them.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: DES

Grant/Contract Number:: AC02-76SF00515; AC02-07CH11359; AC02-05CH11231

OSTI ID:: 1374390

Alternate ID(s):: OSTI ID: 1355922; OSTI ID: 1458502

Report Number(s):: FERMILAB-PUB-17-124-AE; arXiv:1703.08410

Journal Information:: The Astrophysical Journal (Online), Vol. 843, Issue 2; ISSN 1538-4357

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

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Inner dark matter distribution of the Cosmic Horseshoe (J1148+1930) with gravitational lensing and dynamics Schuldt, S.; Chirivì, G.; Suyu, S. H. Astronomy & Astrophysics, Vol. 631 https://doi.org/10.1051/0004-6361/201935042	journal	October 2019
Properties of Subhalos in the Interacting Dark Matter Scenario Moliné, Ángeles; Schewtschenko, Jascha A.; Sánchez-Conde, Miguel A. Galaxies, Vol. 7, Issue 4 https://doi.org/10.3390/galaxies7040080	journal	September 2019
The inner dark matter distribution of the Cosmic Horseshoe (J1148+1930) with gravitational lensing and dynamics Schuldt, S.; Chirivì, G.; Suyu, S. H. arXiv https://doi.org/10.48550/arxiv.1901.02896	text	January 2019
Properties of subhalos in the interacting dark matter scenario Moliné, Ángeles; Schewtschenko, Jascha A.; Sánchez-Conde, Miguel A. arXiv https://doi.org/10.48550/arxiv.1907.12531	text	January 2019

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Title: Core or Cusps: The Central Dark Matter Profile of a Strong Lensing Cluster with a Bright Central Image at Redshift 1 [Core or Cusps: The Central Dark Matter Profile of a Redshift One Strong Lensing Cluster with a Bright Central Image]

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