MC2: Mapping the dark matter distribution of the “Toothbrush” cluster RX J0603.3+4214 with Hubble Space Telescope and Subaru weak lensing
Abstract
The galaxy cluster RX J0603.3+4214 at z = 0:225 is one of the rarest clusters boasting an extremely large ( 2 Mpc) radio relic. Because of the remarkable morphology of the relic, the cluster is nicknamed the \Toothbrush Cluster". Although the cluster's underlying mass distribution is one of the critical pieces of information needed to reconstruct the merger scenario responsible for the puzzling radio relic morphology, its proximity to the Galactic plane b 10 has imposed signi cant observational challenges. We present a high-resolution weak-lensing study of the cluster with Subaru/Suprime Cam and Hubble Space Telescope imaging data. Our mass reconstruction reveals that the cluster is composed of complicated dark matter substructures closely tracing the galaxy distribution, in contrast, however, with the relatively simple binary X-ray morphology. Nevertheless, we nd that the cluster mass is still dominated by the two most massive clumps aligned north-south with a 3:1 mass ratio (M200 = 6:29+2:24 -1:62 X 1014M⊙ and 1:98+1:24 -0:74 X 1014M⊙ for the northern and southern clumps, respectively). The southern mass peak is 20 o set toward the south with respect to the corresponding X-ray peak, which has a \bullet"-like morphology pointing south. Comparison of the current weak- lensing resultmore »
- Authors:
-
- Yonsei Univ. (Korea, Republic of); Univ. of California, Davis, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Leiden Univ. (Netherlands)
- Univ. of California, Davis, CA (United States)
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Hamburg Sternwarte (Germany)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1430965
- Report Number(s):
- LLNL-JRNL-737792
Journal ID: ISSN 1538-4357; TRN: US1803006
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 817; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Jee, M. James, Dawson, William A., Stroe, Andra, Wittman, David, van Weeren, Reinout J., Bruggen, Marcus, Bradac, Marusa, and Rottgering, Huub. MC2: Mapping the dark matter distribution of the “Toothbrush” cluster RX J0603.3+4214 with Hubble Space Telescope and Subaru weak lensing. United States: N. p., 2016.
Web. doi:10.3847/0004-637X/817/2/179.
Jee, M. James, Dawson, William A., Stroe, Andra, Wittman, David, van Weeren, Reinout J., Bruggen, Marcus, Bradac, Marusa, & Rottgering, Huub. MC2: Mapping the dark matter distribution of the “Toothbrush” cluster RX J0603.3+4214 with Hubble Space Telescope and Subaru weak lensing. United States. https://doi.org/10.3847/0004-637X/817/2/179
Jee, M. James, Dawson, William A., Stroe, Andra, Wittman, David, van Weeren, Reinout J., Bruggen, Marcus, Bradac, Marusa, and Rottgering, Huub. Mon .
"MC2: Mapping the dark matter distribution of the “Toothbrush” cluster RX J0603.3+4214 with Hubble Space Telescope and Subaru weak lensing". United States. https://doi.org/10.3847/0004-637X/817/2/179. https://www.osti.gov/servlets/purl/1430965.
@article{osti_1430965,
title = {MC2: Mapping the dark matter distribution of the “Toothbrush” cluster RX J0603.3+4214 with Hubble Space Telescope and Subaru weak lensing},
author = {Jee, M. James and Dawson, William A. and Stroe, Andra and Wittman, David and van Weeren, Reinout J. and Bruggen, Marcus and Bradac, Marusa and Rottgering, Huub},
abstractNote = {The galaxy cluster RX J0603.3+4214 at z = 0:225 is one of the rarest clusters boasting an extremely large ( 2 Mpc) radio relic. Because of the remarkable morphology of the relic, the cluster is nicknamed the \Toothbrush Cluster". Although the cluster's underlying mass distribution is one of the critical pieces of information needed to reconstruct the merger scenario responsible for the puzzling radio relic morphology, its proximity to the Galactic plane b 10 has imposed signi cant observational challenges. We present a high-resolution weak-lensing study of the cluster with Subaru/Suprime Cam and Hubble Space Telescope imaging data. Our mass reconstruction reveals that the cluster is composed of complicated dark matter substructures closely tracing the galaxy distribution, in contrast, however, with the relatively simple binary X-ray morphology. Nevertheless, we nd that the cluster mass is still dominated by the two most massive clumps aligned north-south with a 3:1 mass ratio (M200 = 6:29+2:24 -1:62 X 1014M⊙ and 1:98+1:24 -0:74 X 1014M⊙ for the northern and southern clumps, respectively). The southern mass peak is 20 o set toward the south with respect to the corresponding X-ray peak, which has a \bullet"-like morphology pointing south. Comparison of the current weak- lensing result with the X-ray, galaxy, and radio relic suggests that perhaps the dominant mechanism responsible for the observed relic may be a high-speed collision of the two most massive subclusters, although the peculiarity of the morphology necessitates involvement of additional subclusters. Careful numerical simulations should follow in order to obtain more complete understanding of the merger scenario utilizing all existing observations.},
doi = {10.3847/0004-637X/817/2/179},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 817,
place = {United States},
year = {Mon Feb 01 00:00:00 EST 2016},
month = {Mon Feb 01 00:00:00 EST 2016}
}
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