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

Abstract

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 flattensmore » 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.« less

Authors:
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
+ Show Author Affiliations
  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
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautics and Space Administration (NASA)
OSTI Identifier:
1431004
Report Number(s):
LLNL-JRNL-748246
Journal ID: ISSN 1538-4357; TRN: US1802933
Grant/Contract Number:  
AC52-07NA27344; NAS8-03060; NAS5-26555; GO3-14131X; HSTHF2-51334.001-A; 12065.007-A
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 835; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: clusters: individual (MACS J0717.5+3745); galaxies: clusters: intracluster medium; radiation mechanisms: non-thermal; X-rays: galaxies: clusters

Citation Formats

van Weeren, R. J., Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., Pearce, Connor J. J., Bonafede, A., Bruggen, M., Bulbul, E., Clarke, T. E., Churazov, E., David, L., Dawson, W. A., Donahue, M., Goulding, A., Kraft, R. P., Mason, B., Merten, J., Mroczkowski, T., Nulsen, P. E. J., Rosati, P., Roediger, E., Randall, S. W., Sayers, J., Umetsu, K., Vikhlinin, A., and Zitrin, A. Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745. United States: N. p., 2017. Web. doi:10.3847/1538-4357/835/2/197.
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van Weeren, R. J., Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., Pearce, Connor J. J., Bonafede, A., Bruggen, M., Bulbul, E., Clarke, T. E., Churazov, E., David, L., Dawson, W. A., Donahue, M., Goulding, A., Kraft, R. P., Mason, B., Merten, J., Mroczkowski, T., Nulsen, P. E. J., Rosati, P., Roediger, E., Randall, S. W., Sayers, J., Umetsu, K., Vikhlinin, A., & Zitrin, A. Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745. United States. https://doi.org/10.3847/1538-4357/835/2/197
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van Weeren, R. J., Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., Pearce, Connor J. J., Bonafede, A., Bruggen, M., Bulbul, E., Clarke, T. E., Churazov, E., David, L., Dawson, W. A., Donahue, M., Goulding, A., Kraft, R. P., Mason, B., Merten, J., Mroczkowski, T., Nulsen, P. E. J., Rosati, P., Roediger, E., Randall, S. W., Sayers, J., Umetsu, K., Vikhlinin, A., and Zitrin, A. Tue . "Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745". United States. https://doi.org/10.3847/1538-4357/835/2/197. https://www.osti.gov/servlets/purl/1431004.
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@article{osti_1431004,
title = {Chandra and JVLA Observations of HST Frontier Fields Cluster MACS J0717.5+3745},
author = {van Weeren, R. J. and Ogrean, G. A. and Jones, C. and Forman, W. R. and Andrade-Santos, F. and Pearce, Connor J. J. and Bonafede, A. and Bruggen, M. and Bulbul, E. and Clarke, T. E. and Churazov, E. and David, L. and Dawson, W. A. and Donahue, M. and Goulding, A. and Kraft, R. P. and Mason, B. and Merten, J. and Mroczkowski, T. and Nulsen, P. E. J. and Rosati, P. and Roediger, E. and Randall, S. W. and Sayers, J. and Umetsu, K. and Vikhlinin, A. and Zitrin, A.},
abstractNote = {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.},
doi = {10.3847/1538-4357/835/2/197},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 835,
place = {United States},
year = {Tue Jan 31 00:00:00 EST 2017},
month = {Tue Jan 31 00:00:00 EST 2017}
}
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https://doi.org/10.3847/1538-4357/835/2/197
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text, January 2008

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text, January 2008

Particle Acceleration on Megaparsec Scales in a Merging Galaxy Cluster
text, January 2010

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

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

$Suzaku$ X-ray study of the double radio relic galaxy cluster CIZA J2242.8+5301
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

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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    Growing a ‘cosmic beast’: observations and simulations of MACS J0717.5+3745
    journal, August 2018

    • Jauzac, M.; Eckert, D.; Schaller, M.
    • Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 3
    • DOI: 10.1093/mnras/sty2366

    Intracluster light: a luminous tracer for dark matter in clusters of galaxies
    journal, October 2018

    • Montes, Mireia; Trujillo, Ignacio
    • Monthly Notices of the Royal Astronomical Society, Vol. 482, Issue 2
    • DOI: 10.1093/mnras/sty2858

    Shocks and cold fronts in merging and massive galaxy clusters: new detections with Chandra
    journal, March 2018

    • Botteon, A.; Gastaldello, F.; Brunetti, G.
    • Monthly Notices of the Royal Astronomical Society, Vol. 476, Issue 4
    • DOI: 10.1093/mnras/sty598

    A massive cluster at z = 0.288 caught in the process of formation: The case of Abell 959
    journal, May 2019

    • Bîrzan, L.; Rafferty, D. A.; Cassano, R.
    • Monthly Notices of the Royal Astronomical Society, Vol. 487, Issue 4
    • DOI: 10.1093/mnras/stz1456

    Polarization of radio relics in galaxy clusters
    journal, November 2019

    • Wittor, D.; Hoeft, M.; Vazza, F.
    • Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 3
    • DOI: 10.1093/mnras/stz2715

    VLA Radio Observations of the HST Frontier Fields Cluster Abell 2744: The Discovery of New Radio Relics
    journal, August 2017

    • Pearce, C. J. J.; van Weeren, R. J.; Andrade-Santos, F.
    • The Astrophysical Journal, Vol. 845, Issue 1
    • DOI: 10.3847/1538-4357/aa7e2f

    Deep VLA Observations of the Cluster 1RXS J0603.3+4214 in the Frequency Range of 1–2 GHz
    journal, January 2018

    • Rajpurohit, K.; Hoeft, M.; van Weeren, R. J.
    • The Astrophysical Journal, Vol. 852, Issue 2
    • DOI: 10.3847/1538-4357/aa9f13

    JVLA 1.5 GHz Continuum Observation of CLASH Clusters. I. Radio Properties of the BCGs
    journal, January 2018

    • Yu, Heng; Tozzi, Paolo; van Weeren, Reinout
    • The Astrophysical Journal, Vol. 853, Issue 2
    • DOI: 10.3847/1538-4357/aaa421

    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

    • Gennaro, G. Di; van Weeren, R. J.; Hoeft, M.
    • The Astrophysical Journal, Vol. 865, Issue 1
    • DOI: 10.3847/1538-4357/aad738

    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

    • Di Gennaro, G.; van Weeren, R. J.; Andrade-Santos, F.
    • The Astrophysical Journal, Vol. 873, Issue 1
    • DOI: 10.3847/1538-4357/ab03cd

    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

    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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