skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The complex intracluster medium of Abell 1569 and its interaction with central radio galaxies

Journal Article · · Monthly Notices of the Royal Astronomical Society

Here, we present the first in-depth study of X-ray emission from a nearby (z ~ 0.0784) galaxy cluster Abell 1569 using an archival Chandra observation. A1569 consists of two unbound subclusters – a northern subcluster (A1569N) hosting a double-lobed radio galaxy 1233+169 at its centre, and a southern subcluster (A1569S) harbouring a wide-angle-tailed (WAT) radio source 1233+168. X-ray emission from A1569N and A1569S extends to a radius r ~248 kpc and r ~370 kpc, respectively, indicating that the two gas clumps are group-scale systems. The two subclusters have low X-ray luminosities (~1042–43 erg s–1), average elemental abundances ~1/4 Z, low average temperatures (~2 keV), and lack large (r ≳ 40–50 kpc) cool cores associated with the intracluster gas. We detect a pair of cavities coincident with the radio lobes of 1233+169 in A1569N. The total mechanical power associated with the cavity pair is an order of magnitude larger than the X-ray radiative loss in the cavity-occupied region, providing corroborating evidence for cavity-induced heating of the intragroup gas in A1569N. A1569S exhibits possible evidence for a small-scale cluster-subcluster merger, as indicated by its high central entropy, and the presence of local gas elongation and a density discontinuity in between the bent radio tails of 1233+168. The discontinuity is indicative of a weak merger shock with Mach Number, M ~ 1.7. The most plausible geometry for the ongoing interaction is a head-on merger occurring between A1569S and a subcluster falling in from the west along the line bisecting the WAT tails.

Research Organization:
US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)
Sponsoring Organization:
USDOE Office of Science (SC); Alfred P. Sloan Foundation; National Science Foundation (NSF); National Aeronautics and Space Administration (NASA)
OSTI ID:
1833451
Alternate ID(s):
OSTI ID: 1982557
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 509 Journal Issue: 3; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (78)

When clusters collide - A numerical Hydro/N-body simulation of merging galaxy clusters journal April 1993
Heating Hot Atmospheres with Active Galactic Nuclei journal September 2007
The Physics of Cluster Mergers book January 2002
Mergers, Cosmic Rays, and Nonthermal Processes in Clusters of Galaxies journal December 2004
Hydrodynamic simulations of merging clusters of galaxies journal January 2002
A Cosmology Calculator for the World Wide Web journal December 2006
Cooling flows as a calorimeter of active galactic nucleus mechanical power journal May 2002
ROSAT X‐Ray Observations of Abell Clusters with Wide‐Angle Tailed Radio Sources journal January 1997
Radio jet propagation and wide-angle tailed radio sources in merging galaxy cluster environments journal May 1995
Shocks and cold fronts in galaxy clusters journal May 2007
The Radio Galaxy Populations of Nearby Northern Abell Clusters journal June 2001
The Dynamics of the Galaxy Cluster Abell 2634 journal October 1993
Temperature and abundance profiles of hot gas in galaxy groups – I. Results and statistical analysis journal September 2007
The Cluster Dynamics, X-Ray Emission, and Radio Galaxies in Abell 578 = Abell 1569 journal November 1997
Detecting edges in the X-ray surface brightness of galaxy clusters journal May 2016
A Chandra study of Abell 795 – a sloshing cluster with an FR0 radio galaxy at its centre journal March 2021
The intragroup medium in loose groups of galaxies journal June 2000
The interplay between radio galaxies and cluster environment journal July 2007
The X-ray luminosity–temperature relation of a complete sample of low-mass galaxy clusters journal August 2016
A 20 Centimeter VLA Survey of Abell Clusters of Galaxies. VII. Detailed Radio Images journal January 1997
On the prevalence of radio-loud active galactic nuclei in brightest cluster galaxies: implications for AGN heating of cooling flows journal August 2007
Heating the hot Atmospheres of Galaxy Groups and Clusters with Cavities: the Relationship Between jet Power and Low-Frequency Radio Emission journal June 2011
Absolute Measurement of the Unresolved Cosmic X‐Ray Background in the 0.5–8 keV Band with Chandra journal July 2006
Hot gas in galaxy groups: recent observations journal April 2012
Substructures in Abell clusters of galaxies journal April 2006
1919+479: Big WAT in a poor cluster journal December 1994
The Merger Environment of the wide Angle tail Hosting Cluster a562 journal December 2011
Active galactic nuclei heating in the centres of galaxy groups: a statistical study journal March 2007
A Systematic Study of Radio‐induced X‐Ray Cavities in Clusters, Groups, and Galaxies journal June 2004
The ROSAT ‐ESO Flux‐limited X‐Ray (REFLEX) Galaxy Cluster Survey. IV. The X‐Ray Luminosity Function journal February 2002
Galaxy cluster mergers journal October 2009
[ITAL]Chandra[/ITAL] X-Ray Observations of the Hydra A Cluster: An Interaction between the Radio Source and the X-Ray–emitting Gas journal May 2000
The Mass Function of an X‐Ray Flux–limited Sample of Galaxy Clusters journal March 2002
The Radio Emission from Galaxies in the Perseus Cluster journal January 1968
A HIGH FIDELITY SAMPLE OF COLD FRONT CLUSTERS FROM THE CHANDRA ARCHIVE journal October 2009
A statistically selected Chandra sample of 20 galaxy clusters - I. Temperature and cooling time profiles journal November 2006
Evidence for AGN Feedback in Galaxy Clusters and Groups journal January 2012
Scaling properties of a complete X-ray selected galaxy group sample journal January 2015
Shock Heating of the Merging Galaxy Cluster a521 journal January 2013
Suzaku observations of low surface brightness cluster Abell 1631 journal April 2018
[ITAL]Chandra[/ITAL] Observation of the Radio Source/X-Ray Gas Interaction in the Cooling Flow Cluster Abell 2052 journal September 2001
A Moving Cold Front in the Intergalactic Medium of A3667 journal April 2001
The global properties of a representative sample of 51 narrow-angle-tail radio sources in the directions of Abell clusters journal June 1985
Calibration of X-ray absorption in our Galaxy journal March 2013
High entropy and evidence for a merger in the low surface brightness cluster Abell 2399 journal November 2018
The Hercules cluster in X-rays with XMM-Newton and Chandra journal November 2020
A systematic study of X-ray substructure of galaxy clusters detected in the ROSAT All-Sky Survey journal November 2001
Giant cavities, cooling and metallicity substructure in Abell 2204 journal February 2009
A Parameter Space Exploration of Galaxy Cluster Mergers. i. gas Mixing and the Generation of Cluster Entropy journal January 2011
The Cluster‐Scale AGN Outburst in Hydra A journal August 2005
Why do head-tail sources exist in poor clusters of galaxies? journal November 1994
Clumped X-ray emission around radio galaxies in Abell clusters journal March 1994
Tailed radio galaxies as tracers of galaxy clusters. Serendipitous discoveries with the GMRT journal July 2009
A catalog of rich clusters of galaxies journal May 1989
Low-scatter galaxy cluster mass proxies for the eROSITA all-sky survey journal September 2020
Einstein Observatory Images of Clusters of Galaxies journal January 1999
X-Ray Properties of Groups of Galaxies journal September 2000
An XMM–Newton study of the environments, particle content and impact of low-power radio galaxies journal May 2008
Why Do Only Some Galaxy Clusters Have Cool Cores? journal March 2008
Heating of the Intracluster Gas in the Triangulum Australis Cluster journal November 1996
On the Origin of cool core Galaxy Clusters: Comparing X-Ray Observations with Numerical Simulations journal May 2009
Evidence for radio-source heating of groups: Evidence for radio-source heating of groups journal January 2005
Planck 2018 results: VI. Cosmological parameters journal September 2020
Radio Sources with Wide-Angle Tails in Abell Clusters of Galaxies journal April 1976
A deep Chandra observation of the Perseus cluster: shocks and ripples journal September 2003
X-ray survey of clusters of galaxies with the Einstein Observatory journal August 1983
Discovery of an X-ray cavity near the radio lobes of Cygnus A indicating previous AGN activity journal August 2012
Radiative Efficiency and Content of Extragalactic Radio Sources: Toward a Universal Scaling Relation between Jet Power and Radio Power journal October 2008
Substructure within clusters of galaxies journal June 1982
The Observational Consequences of Merging Clusters of Galaxies journal December 1996
The interaction of 3C 401 with the surrounding intracluster medium: Interaction of 3C 401 with the surrounding ICM journal January 2005
Active galactic nucleus feedback in clusters of galaxies journal March 2010
Evolution of Buoyant Bubbles in M87 journal June 2001
Dynamics of [CLC]c[/CLC]D Clusters of Galaxies. IV. Conclusion of a Survey of 25 Abell Clusters journal December 2001
Observational Evidence of Active Galactic Nuclei Feedback journal September 2012
DEEP CHANDRA OBSERVATIONS OF THE EXTENDED GAS SLOSHING SPIRAL IN A2029 journal August 2013
Tracing cosmic evolution with clusters of galaxies journal April 2005
A catalog of galaxy clusters observed by XMM-Newton journal October 2007

Similar Records

INTRACLUSTER MEDIUM OF THE MERGING CLUSTER A3395
Journal Article · Sat Dec 10 00:00:00 EST 2011 · Astrophysical Journal · OSTI ID:1833451

DEEP CHANDRA OBSERVATIONS OF THE EXTENDED GAS SLOSHING SPIRAL IN A2029
Journal Article · Tue Aug 20 00:00:00 EDT 2013 · Astrophysical Journal · OSTI ID:1833451

THE MERGER ENVIRONMENT OF THE WIDE ANGLE TAIL HOSTING CLUSTER A562
Journal Article · Tue Dec 20 00:00:00 EST 2011 · Astrophysical Journal · OSTI ID:1833451