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Title: The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles

Abstract

Splashback refers to the process of matter that is accreting onto a dark matter halo reaching its first orbital apocenter and turning around in its orbit. The clustercentric radius at which this process occurs, r sp, defines a halo boundary that is connected to the dynamics of the cluster. A rapid decline in the halo profile is expected near r sp. We measure the galaxy number density and weak lensing mass profiles around redMaPPer galaxy clusters in the first-year Dark Energy Survey (DES) data. For a cluster sample with mean M 200m mass ≈2.5 × 10 14 M , we find strong evidence of a splashback-like steepening of the galaxy density profile and measure r sp = 1.13 ± 0.07 h –1 Mpc, consistent with the earlier Sloan Digital Sky Survey measurements of More et al. and Baxter et al. Moreover, our weak lensing measurement demonstrates for the first time the existence of a splashback-like steepening of the matter profile of galaxy clusters. We measure r sp = 1.34 ± 0.21 h –1 Mpc from the weak lensing data, in good agreement with our galaxy density measurements. For different cluster and galaxy samples, we find that, consistent with ΛCDM simulations,more » r sp scales with R 200m and does not evolve with redshift over the redshift range of 0.3–0.6. We also find that potential systematic effects associated with the redMaPPer algorithm may impact the location of r sp. In conclusion, we discuss the progress needed to understand the systematic uncertainties and fully exploit forthcoming data from DES and future surveys, emphasizing the importance of more realistic mock catalogs and independent cluster samples.« less

Authors:
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Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
DES Collaboration
OSTI Identifier:
1409347
Alternate Identifier(s):
OSTI ID: 1475141; OSTI ID: 1480812
Report Number(s):
arXiv:1710.06808; FERMILAB-PUB-17-467-AE; BNL-209108-2018-JAAM
Journal ID: ISSN 1538-4357; 1631311
Grant/Contract Number:  
AC02-07CH11359; SC0012704; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 864; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmology: observations; galaxies: clusters: general; galaxies: halos; gravitational lensing: weak

Citation Formats

Chang, C., Baxter, E., Jain, B., Sánchez, C., Adhikari, S., Varga, T. N., Fang, Y., Rozo, E., Rykoff, E. S., Kravtsov, A., Gruen, D., Hartley, W., Huff, E. M., Jarvis, M., Kim, A. G., Prat, J., MacCrann, N., McClintock, T., Palmese, A., Rapetti, D., Rollins, R. P., Samuroff, S., Sheldon, E., Troxel, M. A., Wechsler, R. H., Zhang, Y., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Allam, S., Annis, J., Bechtol, K., Benoit-Lévy, A., Bernstein, G. M., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., D’Andrea, C. B., Costa, L. N. da, Davis, C., Desai, S., Diehl, H. T., Dietrich, J. P., Drlica-Wagner, A., Eifler, T. F., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Jeltema, T., Krause, E., Kuehn, K., Lahav, O., Lima, M., March, M., Marshall, J. L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Mohr, J. J., Nord, B., Ogando, R. L. C., Plazas, A. A., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., and Weller, J. The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles. United States: N. p., 2018. Web. doi:10.3847/1538-4357/aad5e7.
Chang, C., Baxter, E., Jain, B., Sánchez, C., Adhikari, S., Varga, T. N., Fang, Y., Rozo, E., Rykoff, E. S., Kravtsov, A., Gruen, D., Hartley, W., Huff, E. M., Jarvis, M., Kim, A. G., Prat, J., MacCrann, N., McClintock, T., Palmese, A., Rapetti, D., Rollins, R. P., Samuroff, S., Sheldon, E., Troxel, M. A., Wechsler, R. H., Zhang, Y., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Allam, S., Annis, J., Bechtol, K., Benoit-Lévy, A., Bernstein, G. M., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., D’Andrea, C. B., Costa, L. N. da, Davis, C., Desai, S., Diehl, H. T., Dietrich, J. P., Drlica-Wagner, A., Eifler, T. F., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Jeltema, T., Krause, E., Kuehn, K., Lahav, O., Lima, M., March, M., Marshall, J. L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Mohr, J. J., Nord, B., Ogando, R. L. C., Plazas, A. A., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., & Weller, J. The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles. United States. doi:10.3847/1538-4357/aad5e7.
Chang, C., Baxter, E., Jain, B., Sánchez, C., Adhikari, S., Varga, T. N., Fang, Y., Rozo, E., Rykoff, E. S., Kravtsov, A., Gruen, D., Hartley, W., Huff, E. M., Jarvis, M., Kim, A. G., Prat, J., MacCrann, N., McClintock, T., Palmese, A., Rapetti, D., Rollins, R. P., Samuroff, S., Sheldon, E., Troxel, M. A., Wechsler, R. H., Zhang, Y., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Allam, S., Annis, J., Bechtol, K., Benoit-Lévy, A., Bernstein, G. M., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., D’Andrea, C. B., Costa, L. N. da, Davis, C., Desai, S., Diehl, H. T., Dietrich, J. P., Drlica-Wagner, A., Eifler, T. F., Flaugher, B., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Jeltema, T., Krause, E., Kuehn, K., Lahav, O., Lima, M., March, M., Marshall, J. L., Martini, P., Melchior, P., Menanteau, F., Miquel, R., Mohr, J. J., Nord, B., Ogando, R. L. C., Plazas, A. A., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., and Weller, J. Fri . "The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles". United States. doi:10.3847/1538-4357/aad5e7. https://www.osti.gov/servlets/purl/1409347.
@article{osti_1409347,
title = {The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles},
author = {Chang, C. and Baxter, E. and Jain, B. and Sánchez, C. and Adhikari, S. and Varga, T. N. and Fang, Y. and Rozo, E. and Rykoff, E. S. and Kravtsov, A. and Gruen, D. and Hartley, W. and Huff, E. M. and Jarvis, M. and Kim, A. G. and Prat, J. and MacCrann, N. and McClintock, T. and Palmese, A. and Rapetti, D. and Rollins, R. P. and Samuroff, S. and Sheldon, E. and Troxel, M. A. and Wechsler, R. H. and Zhang, Y. and Zuntz, J. and Abbott, T. M. C. and Abdalla, F. B. and Allam, S. and Annis, J. and Bechtol, K. and Benoit-Lévy, A. and Bernstein, G. M. and Brooks, D. and Buckley-Geer, E. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and D’Andrea, C. B. and Costa, L. N. da and Davis, C. and Desai, S. and Diehl, H. T. and Dietrich, J. P. and Drlica-Wagner, A. and Eifler, T. F. and Flaugher, B. and Fosalba, P. and Frieman, J. and García-Bellido, J. and Gaztanaga, E. and Gerdes, D. W. and Gruendl, R. A. and Gschwend, J. and Gutierrez, G. and Honscheid, K. and James, D. J. and Jeltema, T. and Krause, E. and Kuehn, K. and Lahav, O. and Lima, M. and March, M. and Marshall, J. L. and Martini, P. and Melchior, P. and Menanteau, F. and Miquel, R. and Mohr, J. J. and Nord, B. and Ogando, R. L. C. and Plazas, A. A. and Sanchez, E. and Scarpine, V. and Schindler, R. and Schubnell, M. and Sevilla-Noarbe, I. and Smith, M. and Smith, R. C. and Soares-Santos, M. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Weller, J.},
abstractNote = {Splashback refers to the process of matter that is accreting onto a dark matter halo reaching its first orbital apocenter and turning around in its orbit. The clustercentric radius at which this process occurs, r sp, defines a halo boundary that is connected to the dynamics of the cluster. A rapid decline in the halo profile is expected near r sp. We measure the galaxy number density and weak lensing mass profiles around redMaPPer galaxy clusters in the first-year Dark Energy Survey (DES) data. For a cluster sample with mean M 200m mass ≈2.5 × 1014 M ⊙, we find strong evidence of a splashback-like steepening of the galaxy density profile and measure r sp = 1.13 ± 0.07 h –1 Mpc, consistent with the earlier Sloan Digital Sky Survey measurements of More et al. and Baxter et al. Moreover, our weak lensing measurement demonstrates for the first time the existence of a splashback-like steepening of the matter profile of galaxy clusters. We measure r sp = 1.34 ± 0.21 h –1 Mpc from the weak lensing data, in good agreement with our galaxy density measurements. For different cluster and galaxy samples, we find that, consistent with ΛCDM simulations, r sp scales with R 200m and does not evolve with redshift over the redshift range of 0.3–0.6. We also find that potential systematic effects associated with the redMaPPer algorithm may impact the location of r sp. In conclusion, we discuss the progress needed to understand the systematic uncertainties and fully exploit forthcoming data from DES and future surveys, emphasizing the importance of more realistic mock catalogs and independent cluster samples.},
doi = {10.3847/1538-4357/aad5e7},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 864,
place = {United States},
year = {2018},
month = {8}
}

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