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Title: Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745

Journal Article · · The Astrophysical Journal (Online)
ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [1];  [1];  [3];  [4];  [4]; ORCiD logo [5]; ORCiD logo [6];  [7];  [1];  [8]; ORCiD logo [9];  [10];  [1];  [11];  [12]; ORCiD logo [13]; ORCiD logo [14] more »;  [15];  [16]; ORCiD logo [1];  [17]; ORCiD logo [18]; ORCiD logo [1]; ORCiD logo [17] « less
  1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  2. Stanford Univ., CA (United States). Dept. of Physics
  3. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Univ. of Southampton (United Kingdom). Dept. of Physics and Astronomy
  4. Univ. of Hamburg (Germany). Hamburger Sternwarte
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Kavli Inst. for Astrophysics and Space Research
  6. Naval Research Lab. (NRL), Washington, DC (United States)
  7. Max Planck Inst. for Astrophysics, Garching (Germany); Space Research Inst., Moscow (Russia)
  8. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  9. Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  10. Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
  11. National Radio Astronomy Observatory, Charlottesville, VA (United States)
  12. Univ. of Oxford (United Kingdom). Dept. of Physics
  13. European Organization for Astronomical Research in the Southern Hemisphere (ESO), Munchen (Germany)
  14. Harvard-Smithsonian Center for Astrophysics, Crawley WA (United States). International Centre for Radio Astronomy Research (ICRAR)
  15. Univ. degli Studi di Ferrara (Italy). Dipartimento di Fisica e Scienze della Terra
  16. Univ. of Hull, Cottinton Road, Hall (United States)
  17. California Inst. of Technology (CalTech), Pasadena, CA (United States). Cahill Center for Astronomy and Astrophysics
  18. Academia Sinica, Taipei (Taiwan). Inst. of Astronomy and Astrophysics
+ Show Author Affiliations

To investigate the relationship between thermal and non-thermal components in merger galaxy clusters, we present deep JVLA and Chandra observations of the HST Frontier Fields cluster MACS J0717.5+3745. The Chandra image shows a complex merger event, with at least four components belonging to different merging subclusters. Northwest of the cluster, ~0.7 Mpc from the center, there is a ram-pressure-stripped core that appears to have traversed the densest parts of the cluster after entering the intracluster medium (ICM) from the direction of a galaxy filament to the southeast. Here, we detect a density discontinuity north-northeast of this core, which we speculate is associated with a cold front. Our radio images reveal new details for the complex radio relic and radio halo in this cluster. In addition, we discover several new filamentary radio sources with sizes of 100–300 kpc. A few of these seem to be connected to the main radio relic, while others are either embedded within the radio halo or projected onto it. A narrow-angled-tailed (NAT) radio galaxy, a cluster member, is located at the center of the radio relic. The steep spectrum tails of this active galactic nucleus lead into the large radio relic where the radio spectrum flattens again. This morphological connection between the NAT radio galaxy and relic provides evidence for re-acceleration (revival) of fossil electrons. The presence of hot ≳20 keV ICM gas detected by Chandra near the relic location provides additional support for this re-acceleration scenario.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
National Aeronautic and Space Administration (NASA); USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1431004
Report Number(s):
LLNL-JRNL--748246
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 835; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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An X-ray/optical study of the complex dynamics of the core of the massive intermediate-redshift cluster MACSJ0717.5+3745 text January 2009
Revealing the magnetic field in a distant galaxy cluster: discovery of the complex radio emission from MACS J0717.5 +3745 text January 2009
Particle Acceleration on Megaparsec Scales in a Merging Galaxy Cluster text January 2010
Re-acceleration of Nonthermal Particles at Weak Cosmological Shock Waves text January 2011
A Multi-wavelength Study of the Sunyaev-Zel'dovich Effect in the Triple-Merger Cluster MACS J0717.5+3745 with MUSTANG and Bolocam text January 2012
Giant radio relics in galaxy clusters: reacceleration of fossil relativistic electrons? text January 2013
Calibration of X-ray absorption in our Galaxy text January 2013
CLASH: Complete Lensing Analysis of the Largest Cosmic Lens MACS J0717.5+3745 and Surrounding Structures text January 2013
Discovery of spectral curvature in the shock downstream region: CIZA J2242.8+5301 text January 2013
Complex diffuse radio emission in the merging PLANCK ESZ cluster Abell 3411 text January 2013
Revisiting scaling relations for giant radio halos in galaxy clusters text January 2013
A Measurement of the Kinetic Sunyaev-Zel'dovich Signal Toward MACS J0717.5+3745 text January 2013
Spectroscopic redshifts of galaxies within the Frontier Fields text January 2014
CLASH: Weak-Lensing Shear-and-Magnification Analysis of 20 Galaxy Clusters text January 2014
Lens models and magnification maps of the six Hubble Frontier Fields clusters text January 2014
WSClean: an implementation of a fast, generic wide-field imager for radio astronomy text January 2014
Radio and X-ray Shocks in Clusters of galaxies text January 2015
Curved Radio Spectra of Weak Cluster Shocks text January 2015
Frontier Fields Clusters: Chandra and JVLA View of the Pre-Merging Cluster MACS J0416.1-2403 text January 2015
$Suzaku$ X-ray study of the double radio relic galaxy cluster CIZA J2242.8+5301 text January 2015
Strong-Lensing Analysis of MACS,J0717.5+3745 from Hubble Frontier Fields observations: How well can the mass distribution be constrained? text January 2015
LOFAR, VLA, and Chandra observations of the Toothbrush galaxy cluster text January 2016
A shock front at the radio relic of Abell 2744 text January 2016
Constraining the efficiency of cosmic ray acceleration by cluster shocks text January 2016
The Case for Electron Re-Acceleration at Galaxy Cluster Shocks text January 2017
Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions text January 2001
A Textbook Example of a Bow Shock in the Merging Galaxy Cluster 1E0657-56 text January 2001
The 2-8 keV cosmic X-ray background spectrum as observed with XMM-Newton text January 2003
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections text January 2005
ASMOOTH: A simple and efficient algorithm for adaptive kernel smoothing of two-dimensional imaging data text January 2006
Giant Ringlike Radio Structures Around Galaxy Cluster Abell 3376 text January 2006
Shocks and cold fronts in galaxy clusters text January 2007
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Diffuse Radio Emission from Galaxy Clusters journal February 2019
Substructure and merger detection in resolved NIKA Sunyaev-Zel’dovich images of distant clusters journal June 2018
LOFAR discoveryof radio emission in MACS J0717.5+3745 journal May 2018
Globular cluster population of the HST Frontier Fields galaxy J07173724+3744224
  • Carlson, Nathan L.; Sultanova, Madina R.; Kalawila Vithanage, Sandanuwan P.
  • Monthly Notices of the Royal Astronomical Society, Vol. 480, Issue 2 https://doi.org/10.1093/mnras/sty1979
journal July 2018
Growing a ‘cosmic beast’: observations and simulations of MACS J0717.5+3745 journal August 2018
Intracluster light: a luminous tracer for dark matter in clusters of galaxies journal October 2018
Shocks and cold fronts in merging and massive galaxy clusters: new detections with Chandra journal March 2018
A massive cluster at z = 0.288 caught in the process of formation: The case of Abell 959 journal May 2019
Polarization of radio relics in galaxy clusters journal November 2019
VLA Radio Observations of the HST Frontier Fields Cluster Abell 2744: The Discovery of New Radio Relics journal August 2017
Deep VLA Observations of the Cluster 1RXS J0603.3+4214 in the Frequency Range of 1–2 GHz journal January 2018
JVLA 1.5 GHz Continuum Observation of CLASH Clusters. I. Radio Properties of the BCGs journal January 2018
Dissection of the Collisional and Collisionless Mass Components in a Mini Sample of CLASH and HFF Massive Galaxy Clusters at z ≈ 0.4 journal September 2018
Deep Very Large Array Observations of the Merging Cluster CIZA J2242.8+5301: Continuum and Spectral Imaging journal September 2018
On the Faint End of the Galaxy Luminosity Function in the Epoch of Reionization: Updated Constraints from the HST Frontier Fields journal November 2018
Evidence for a Merger-induced Shock Wave in ZwCl 0008.8+5215 with Chandra and Suzaku journal March 2019
Imaging the Thermal and Kinematic Sunyaev–Zel’dovich Effect Signals in a Sample of 10 Massive Galaxy Clusters: Constraints on Internal Velocity Structures and Bulk Velocities journal July 2019
VLA Radio Observations of the HST Frontier Fields Cluster Abell 2744: The Discovery of New Radio Relics text January 2017
Growing a `Cosmic Beast': Observations and Simulations of MACS J0717.5+3745 text January 2017
Globular cluster population of the HST frontier fields galaxy J07173724+3744224 text January 2017
Sub-structure and merger detection in resolved NIKA Sunyaev-Zel'dovich images of distant clusters text January 2017
Dissection of the collisional and collisionless mass components in a mini sample of CLASH and HFF massive galaxy clusters at $z \approx 0.4$ text January 2018
Intracluster light: a luminous tracer for dark matter in clusters of galaxies text January 2018
A Massive Cluster at z = 0.288 Caught in the Process of Formation: The Case of Abell 959 text January 2019

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79 ASTRONOMY AND ASTROPHYSICS
X-rays: galaxies: clusters
galaxies: clusters: individual (MACS J0717.5+3745)
galaxies: clusters: intracluster medium
radiation mechanisms: non-thermal