Numerical simulations of galaxy cluster mergers

• Grant number: 10/12277-9
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Effective date (Start): November 01, 2010
• Effective date (End): October 31, 2014
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Gastão Cesar Bierrenbach Lima Neto
• Grantee: Rubens Eduardo Garcia Machado
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 12/00800-4 - The 3-D universe: astrophysics with large galaxy surveys, AP.TEM

Abstract

Galaxy clusters are the largest collapsed structures in the universe. Being also the most recent structures, they are still growing by accretion and by mergers with other clusters. The intra-cluster gas, observed in X-rays, often exhibits substructures and disturbances in the density or temperature maps, which are signatures of recent merging events. In this project, we aim to analyse the properties of cluster mergers by performing a series of hydrodynamical simulations. These simulations will allow us to reproduce morphological features of the remnant and thus recover the dynamical history of observed clusters, estimating quantitatively the collision parameters.

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MACHADO, RUBENS E. G.; LIMA NETO, GASTAO B.. Simulations of gas sloshing in galaxy cluster Abell 2052. Monthly Notices of the Royal Astronomical Society, v. 447, n. 3, p. 2915-2924, MAR 1 2015. (10/12277-9)

MONTEIRO-OLIVEIRA, R.; LIMA NETO, G. B.; CYPRIANO, E. S.; MACHADO, R. E. G.; CAPELATO, H. V.; LAGANA, T. F.; DURRET, F.; BAGCHI, J.. Weak lensing and spectroscopic analysis of the nearby dissociative merging galaxy cluster Abell 3376. Monthly Notices of the Royal Astronomical Society, v. 468, n. 4, p. 4566-4578, JUL 2017. (12/00578-0, 09/54006-4, 14/13723-3, 10/12277-9)

MANOS, T.; MACHADO, RUBENS E. G.. Chaos and dynamical trends in barred galaxies: bridging the gap between N-body simulations and time-dependent analytical models. Monthly Notices of the Royal Astronomical Society, v. 438, n. 3, p. 2201-2217, MAR 2014. (09/54006-4, 13/11219-3, 10/12277-9)

MACHADO, RUBENS E. G.; LIMA NETO, GASTAO B.. Simulations of the merging galaxy cluster Abell 3376. Monthly Notices of the Royal Astronomical Society, v. 430, n. 4, p. 3249-3260, APR 2013. (09/54006-4, 10/12277-9)

MONTEIRO-OLIVEIRA, R.; CYPRIANO, E. S.; MACHADO, R. E. G.; LIMA NETO, G. B.; RIBEIRO, A. L. B.; SODRE, JR., L.; DUPKE, R.. The merger history of the complex cluster Abell 1758: a combined weak lensing and spectroscopic view. Monthly Notices of the Royal Astronomical Society, v. 466, n. 3, p. 2614-2632, APR 2017. (10/12277-9, 12/00800-4, 09/54006-4, 14/13723-3)

MACHADO, R. E. G.; MONTEIRO-OLIVEIRA, R.; LIMA NETO, G. B.; CYPRIANO, E. S.. Simulating the shocks in the dissociative galaxy cluster Abell 1758N. Monthly Notices of the Royal Astronomical Society, v. 451, n. 3, p. 3309-3320, AUG 11 2015. (09/54006-4, 14/13723-3, 10/12277-9)