Creation of cosmic structure in the complex galaxy cluster merger Abell 2744
dc.contributor.author | Merten, J. | en_US |
dc.contributor.author | Coe, D. | en_US |
dc.contributor.author | Dupke, Renato A. | en_US |
dc.contributor.author | Massey, R. | en_US |
dc.contributor.author | Zitrin, A. | en_US |
dc.contributor.author | Cypriano, Eduardo S. | en_US |
dc.contributor.author | Okabe, N. | en_US |
dc.contributor.author | Frye, B. | en_US |
dc.contributor.author | Braglia, F. G. | en_US |
dc.contributor.author | Jiménez‐teja, Y. | en_US |
dc.contributor.author | Benítez, N. | en_US |
dc.contributor.author | Broadhurst, T. | en_US |
dc.contributor.author | Rhodes, J. | en_US |
dc.contributor.author | Meneghetti, M. | en_US |
dc.contributor.author | Moustakas, L. A. | en_US |
dc.contributor.author | Sodré Jr, L. | en_US |
dc.contributor.author | Krick, J. | en_US |
dc.contributor.author | Bregman, Joel N. | en_US |
dc.date.accessioned | 2011-11-10T15:34:00Z | |
dc.date.available | 2012-12-03T21:17:29Z | en_US |
dc.date.issued | 2011-10-11 | en_US |
dc.identifier.citation | Merten, J.; Coe, D.; Dupke, R.; Massey, R.; Zitrin, A.; Cypriano, E. S.; Okabe, N.; Frye, B.; Braglia, F. G.; Jiménez‐teja, Y. ; Benítez, N. ; Broadhurst, T.; Rhodes, J.; Meneghetti, M.; Moustakas, L. A.; Sodré Jr, L. ; Krick, J.; Bregman, J. N. (2011). "Creation of cosmic structure in the complex galaxy cluster merger Abell 2744." Monthly Notices of the Royal Astronomical Society 417(1). <http://hdl.handle.net/2027.42/86923> | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.issn | 1365-2966 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/86923 | |
dc.description.abstract | We present a detailed strong‐lensing, weak‐lensing and X‐ray analysis of Abell 2744 ( z = 0.308), one of the most actively merging galaxy clusters known. It appears to have unleashed ‘dark’, ‘ghost’, ‘bullet’ and ‘stripped’ substructures, each ∼10 14 M ⊙ . The phenomenology is complex and will present a challenge for numerical simulations to reproduce. With new, multiband Hubble Space Telescope ( HST ) imaging, we identify 34 strongly lensed images of 11 galaxies around the massive Southern ‘core’. Combining this with weak‐lensing data from HST , VLT and Subaru, we produce the most detailed mass map of this cluster to date. We also perform an independent analysis of archival Chandra X‐ray imaging. Our analyses support a recent claim that the Southern core and Northwestern substructure are post‐merger and exhibit morphology similar to the Bullet Cluster viewed from an angle. From the separation between X‐ray emitting gas and lensing mass in the Southern core, we derive a new and independent constraint on the self‐interaction cross‐section of dark matter particles σ/ m < 3 ± 1 cm 2 g −1 . In the Northwestern substructure, the gas, dark matter and galaxy components have become separated by much larger distances. Most curiously, the ‘ghost’ clump (primarily gas) leads the ‘dark’ clump (primarily dark matter) by more than 150 kpc. We propose an enhanced ‘ram‐pressure slingshot’ scenario which may have yielded this reversal of components with such a large separation, but needs further confirmation by follow‐up observations and numerical simulations. A secondary merger involves a second ‘bullet’ clump in the North and an extremely ‘stripped’ clump to the West. The latter appears to exhibit the largest separation between dark matter and X‐ray emitting baryons detected to date in our sky. | en_US |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.publisher | Wiley Periodicals, Inc. | en_US |
dc.subject.other | Gravitational Lensing: Strong | en_US |
dc.subject.other | Gravitational Lensing: Weak | en_US |
dc.subject.other | Galaxies: Clusters: Individual: Abell 2744 | en_US |
dc.subject.other | Dark Matter | en_US |
dc.subject.other | Large‐Scale Structure of Universe | en_US |
dc.subject.other | X‐Rays: Individual: Abell 2744 | en_US |
dc.title | Creation of cosmic structure in the complex galaxy cluster merger Abell 2744 | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Astronomy | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | University of Michigan, Ann Arbor, MI 48109‐1090, USA | en_US |
dc.contributor.affiliationother | Institut für Theoretische Astrophysik, ZAH, Albert‐Ueberle‐Straße 2, 69120 Heidelberg, Germany | en_US |
dc.contributor.affiliationother | INAF–Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy | en_US |
dc.contributor.affiliationother | Space Telescope Science Institute, Baltimore, MD 21218, USA | en_US |
dc.contributor.affiliationother | Eureka Scientific, 2452 Delmer Street 100, Oakland, CA 94602‐3017, USA | en_US |
dc.contributor.affiliationother | Observatório Nacional, Rua General José Cristino 77, Rio de Janeiro, 20921‐400, Brazil | en_US |
dc.contributor.affiliationother | University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ | en_US |
dc.contributor.affiliationother | School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel | en_US |
dc.contributor.affiliationother | Instituto de Astronomia, Geofísica e Ciências Atmosfericos, Universidade de São Paulo (IAG/USP), 05508‐090 São Paulo/SP, Brazil | en_US |
dc.contributor.affiliationother | Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), PO Box 23‐141, Taipei 10617, Taiwan | en_US |
dc.contributor.affiliationother | Department of Physics and Astronomy, 2130 Fulton Street, University of San Francisco, San Francisco, CA 94117, USA | en_US |
dc.contributor.affiliationother | Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada | en_US |
dc.contributor.affiliationother | Instituto de Astrofísica de Andalucía (CSIC), C/Camino Bajo de Huétor 24, Granada 18008, Spain | en_US |
dc.contributor.affiliationother | Department of Theoretical Physics, University of Basque Country UPV/EHU, Leioa, Spain | en_US |
dc.contributor.affiliationother | IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain | en_US |
dc.contributor.affiliationother | Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, MS 169‐327, Pasadena, CA 91109, USA | en_US |
dc.contributor.affiliationother | California Institute of Technology, 1201 East California Boulevard, Pasadena, CA 91125, USA | en_US |
dc.contributor.affiliationother | Spitzer Science Center, MS 220‐6, California Institute of Technology, Pasadena, CA 91125, USA | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/86923/1/j.1365-2966.2011.19266.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2966.2011.19266.x | en_US |
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