The Discovery of Lensed Radio and X-ray Sources Behind the Frontier Fields Cluster MACS J0717.5+3745 with the JVLA and Chandra
Abstract
We report on high-resolution JVLA and Chandra observations of the Hubble Space Telescope (HST) Frontier Cluster MACS J0717.5+3745. MACS J0717.5+3745 offers the largest contiguous magnified area of any known cluster, making it a promising target to search for lensed radio and X-ray sources. With the high-resolution 1.0–6.5 GHz JVLA imaging in A and B configuration, we detect a total of 51 compact radio sources within the area covered by the HST imaging. Within this sample, we find seven lensed sources with amplification factors larger than two. None of these sources are identified as multiply lensed. Based on the radio luminosities, the majority of these sources are likely star-forming galaxies with star-formation rates (SFRs) of 10–50 M⊙ yr-1 located at 1≲ z ≲ 2. Two of the lensed radio sources are also detected in the Chandra image of the cluster. These two sources are likely active galactic nuclei, given their 2–10 keV X-ray luminosities of ~ 1043-44 erg s-1. From the derived radio luminosity function, we find evidence for an increase in the number density of radio sources at 0.6 < z < 2.0, compared to a z < 0.3 sample. Lastly, our observations indicate that deep radio imaging of lensingmore »
- Authors:
-
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- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Univ. of Hamburg (Germany). Hamburger Sternwarte
- Naval Research Lab. (NRL), Washington, DC (United States)
- Max Planck Society, Garching (Germany). Max Planck Inst. for Astrophysics; Space Research Inst., Moscow (Russia)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
- Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
- National Radio Astronomy Observatory, Charlottesville, VA (United States)
- Univ. of Oxford (United Kingdom). Dept. of Physics
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Johns Hopkins Univ., Baltimore, MD (United States). Department of Physics and Astronomy
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Univ. of Western Australia, Crawley WA (Australia). International Centre for Radio Astronomy Research (ICRAR)
- Univ. degli Studi di Ferrara (Italy). Dipartimento di Fisica e Scienze della Terra
- Univ. of Hull, Hull (United Kingdom). E.A. Milne Centre for Astrophysics, Dept. of Physics & Mathematics
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Cahill Center for Astronomy and Astrophysics
- 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
- OSTI Identifier:
- 1430975
- Report Number(s):
- LLNL-JRNL-676771
Journal ID: ISSN 1538-4357; TRN: US1803011
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 817; 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); gravitational lensing: strong; radio continuum: galaxies
Citation Formats
Weeren, R. J. van, Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., 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., Murray, S. S., Nulsen, P. E. J., Rosati, P., Roediger, E., Randall, S. W., Sayers, J., Umetsu, K., Vikhlinin, A., and Zitrin, A. The Discovery of Lensed Radio and X-ray Sources Behind the Frontier Fields Cluster MACS J0717.5+3745 with the JVLA and Chandra. United States: N. p., 2016.
Web. doi:10.3847/0004-637X/817/2/98.
Weeren, R. J. van, Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., 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., Murray, S. S., Nulsen, P. E. J., Rosati, P., Roediger, E., Randall, S. W., Sayers, J., Umetsu, K., Vikhlinin, A., & Zitrin, A. The Discovery of Lensed Radio and X-ray Sources Behind the Frontier Fields Cluster MACS J0717.5+3745 with the JVLA and Chandra. United States. https://doi.org/10.3847/0004-637X/817/2/98
Weeren, R. J. van, Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., 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., Murray, S. S., Nulsen, P. E. J., Rosati, P., Roediger, E., Randall, S. W., Sayers, J., Umetsu, K., Vikhlinin, A., and Zitrin, A. Wed .
"The Discovery of Lensed Radio and X-ray Sources Behind the Frontier Fields Cluster MACS J0717.5+3745 with the JVLA and Chandra". United States. https://doi.org/10.3847/0004-637X/817/2/98. https://www.osti.gov/servlets/purl/1430975.
@article{osti_1430975,
title = {The Discovery of Lensed Radio and X-ray Sources Behind the Frontier Fields Cluster MACS J0717.5+3745 with the JVLA and Chandra},
author = {Weeren, R. J. van and Ogrean, G. A. and Jones, C. and Forman, W. R. and Andrade-Santos, F. 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 Murray, S. S. 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 = {We report on high-resolution JVLA and Chandra observations of the Hubble Space Telescope (HST) Frontier Cluster MACS J0717.5+3745. MACS J0717.5+3745 offers the largest contiguous magnified area of any known cluster, making it a promising target to search for lensed radio and X-ray sources. With the high-resolution 1.0–6.5 GHz JVLA imaging in A and B configuration, we detect a total of 51 compact radio sources within the area covered by the HST imaging. Within this sample, we find seven lensed sources with amplification factors larger than two. None of these sources are identified as multiply lensed. Based on the radio luminosities, the majority of these sources are likely star-forming galaxies with star-formation rates (SFRs) of 10–50 M⊙ yr-1 located at 1≲ z ≲ 2. Two of the lensed radio sources are also detected in the Chandra image of the cluster. These two sources are likely active galactic nuclei, given their 2–10 keV X-ray luminosities of ~ 1043-44 erg s-1. From the derived radio luminosity function, we find evidence for an increase in the number density of radio sources at 0.6 < z < 2.0, compared to a z < 0.3 sample. Lastly, our observations indicate that deep radio imaging of lensing clusters can be used to study star-forming galaxies, with SFRs as low as ~10M⊙ yr-1, at the peak of cosmic star formation history.},
doi = {10.3847/0004-637X/817/2/98},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 817,
place = {United States},
year = {Wed Jan 27 00:00:00 EST 2016},
month = {Wed Jan 27 00:00:00 EST 2016}
}
Web of Science
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