The large-scale shock in the cluster of galaxies Hydra A
arXiv:0810.0271 · doi:10.1051/0004-6361:200811071
Abstract
We analyzed a deep XMM-Newton observation of the cluster of galaxies Hydra A, focusing on the large-scale shock discovered as a surface brightness discontinuity in Chandra images. The shock front can be seen both in the pressure map and in temperature profiles in several sectors. The Mach numbers determined from the temperature jumps are in good agreement with the Mach numbers derived from EPIC/pn surface brightness profiles and previously from Chandra data and are consistent with M~1.3. The estimated shock age in the different sectors using a spherically symmetric point explosion model ranges between 130 and 230 Myr and the outburst energy between 1.5 and 3e61 ergs. The shape of the shock seen in the pressure map can be approximated with an ellipse centered 70 kpc towards the NE from the cluster center. We aimed to develop a better model that can explain the offset between the shock center and the AGN and give a consistent result on the shock age and energy. To this end, we performed 3D hydrodynamical simulations in which the shock is produced by a symmetrical pair of AGN jets launched in a spherical galaxy cluster. As an explanation of the observed offset of the shock center, we consider large-scale bulk flows in the intracluster medium. The simulation successfully reproduces the size, ellipticity, and average Mach number of the observed shock front. The predicted age of the shock is 160 Myr and the total input energy 3e61 erg. Both values are within the range determined by the spherically symmetric model. Matching the observed 70 kpc offset of the shock ellipse from the cluster center requires large-scale coherent motions with a high velocity of 670 km/s. We discuss the feasibility of this scenario and offer alternative ways to produce the offset and to further improve the simulation.
arXiv comment14 pages, accepted for publication in A&A, minor revision compared to previous version
References in corpus (32)
- The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
- A Systematic Study of Radio-Induced X-ray Cavities in Clusters, Groups, and Galaxies
- Chandra X-ray Observations of the Hydra A Cluster: An Interaction Between the Radio Source and the X-Ray-Emitting Gas
- The Feedback-Regulated Growth of Black Holes and Bulges through Gas Accretion and Starbursts in Cluster Central Dominant Galaxies
- High Resolution X-ray Spectroscopic Constraints on Cooling-Flow Models for Clusters of Galaxies
- X-ray Imaging Spectroscopy of Abell 1835
- A Catalog of Galaxy Clusters Observed by XMM-Newton
- Filaments, Bubbles, and Weak Shocks in the Gaseous Atmosphere of M87
- A High Resolution Study of the Hydra A Cluster with Chandra: Comparison of the Core Mass Distribution with Theoretical Predictions and Evidence for Feedback in the Cooling Flow
- A deeper X-ray study of the core of the Perseus galaxy cluster: the power of sound waves and the distribution of metals and cosmic rays
- The cluster-scale AGN outburst in Hydra A
- Spatially resolved X-ray spectroscopy of cooling clusters of galaxies
- The XMM-Newton EPIC Background: Production of Background Maps and Event Files
- The mass profile of A1413 observed with XMM-Newton: implications for the M-T relation
- X-ray Supercavities in the Hydra A Cluster and the Outburst History of the Central Galaxy's Active Nucleus
- The New Emerging Model for the Structure of Cooling Cores in Clusters of Galaxies
- Chemical enrichment in the cluster of galaxies Hydra A
- The XMM-Newton EPIC Background and the production of Background Blank Sky Event Files
- Interaction of Radio Lobes with the Hot Intracluster Medium: Driving Convective Outflow in Hydra A
- Shocks and sonic booms in the intracluster medium: X-ray shells and radio galaxy activity
- The answer is blowing in the wind: Simulating the interaction of jets with dynamic cluster atmospheres
- The XMM-Newton Serendipitous Survey I. The role of XMM-Newton Survey Science Centre
- Metal-rich multi-phase gas in M87: AGN-driven metal transport, magnetic-field supported multi-temperature gas, and constraints on non-thermal emission observed with XMM-Newton
- XMM-Newton Spectroscopy of the Cluster of Galaxies 2A 0335+096
- Cool X-ray emitting gas in the core of the Centaurus cluster of galaxies
- Subgrid Modeling of AGN-Driven Turbulence in Galaxy Clusters
- An XMM-Newton study of the sub-structure in M87's halo
- XMM-Newton and Gemini Observations of Eight RASSCALS Galaxy Groups
- Hydra A at Low Radio Frequencies
- Shock heating by FR I radio sources in galaxy clusters
- The abundance pattern of O, Mg, Si and Fe in the intracluster medium of the Centaurus cluster observed with XMM-Newton
- On the Temperature Structure of M87
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- Constraining AGN Feedback in Massive Ellipticals with South Pole Telescope Measurements of the Thermal Sunyaev-Zel'dovich Effect
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- Violent interaction between the AGN and the hot gas in the core of the galaxy cluster Sersic 159-03
- The entropy core in galaxy clusters: numerical and physical effects in cosmological grid simulations
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- Probing Gas Motions in the Intra-Cluster Medium: A Mixture Model Approach
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- Explaining the Energetic AGN Outburst of MS0735+7421 with Massive Slow Jets
- Jet-Intracluster Medium interaction in Hydra A. I Estimates of jet velocity from inner knots
- Non-steady heating of cool cores of galaxy clusters by ubiquitous turbulence and AGN
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- Discovery of large scale shock fronts correlated with the radio halo and radio relic in the A2163 galaxy cluster
- The cluster Abell 780: an optical view
- Hyenas: X-ray Bubbles and Cavities in the Intra-Group Medium
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