NAOC Open IR
Diffuse galaxy cluster emission at 168 MHz within the Murchison Widefield Array Epoch of Reionization 0-h field
Duchesne, S. W.1,2; Johnston-Hollitt, M.2,3; Offringa, A. R.4; Pratt, G. W.5; Zheng, Q.6,7; Dehghan, S.1
2021-03-18
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
ISSN1323-3580
Volume38Pages:26
AbstractWe detect and characterise extended, diffuse radio emission from galaxy clusters at 168MHz within the Epoch of Reionization 0-h field: a 45 degrees x 45 degrees region of the southern sky centred on R. A. = 0 degrees, decl.=-27 degrees. We detect 29 sources of interest; a newly detected halo in Abell 0141; a newly detected relic in Abell 2751; 4 new halo candidates and a further 4 new relic candidates; and a new phoenix candidate in Abell 2556. Additionally, we find nine clusters with unclassifiable, diffuse steep-spectrum emission as well as a candidate double relic system associated with RXC J2351.0-1934. We present measured source properties such as their integrated flux densities, spectral indices (alpha, where S-nu proportional to nu(alpha)), and sizes where possible. We find several of the diffuse sources to have ultra-steep spectra including the halo in Abell 0141, if confirmed, showing alpha <=-2.1 +/- 0.1 with the present data making it one of the steepest-spectrum haloes known. Finally, we compare our sample of haloes with previously detected haloes and revisit established scaling relations of the radio halo power (P-1.4) with the cluster X-ray luminosity (L-X) and mass (M-500). We find that the newly detected haloes and candidate haloes are consistent with the P-1.4-L-X and P-1.4-M-500 relations and see an increase in scatter in the previously found relations with increasing sample size likely caused by inhomogeneous determination of P-1.4 across the full halo sample. We show that the MWA is capable of detecting haloes and relics within most of the galaxy clusters within the Planck catalogue of Sunyaev-Zel'dovich sources depending on exact halo or relic properties.
Keywordcontinuum: general galaxies: clusters: general radiation mechanisms: non-thermal galaxies: clusters: individual: (Abell 0033-Abell 0141-Abell 2811-Abell S1121-Abell 2751-Abell 2556-Abell S1136-Abell 0122-RXC J2351.0-1934)
Funding OrganizationMarsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government ; Marsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government ; Marsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government ; Marsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government
DOI10.1017/pasa.2021.7
Language英语
Funding ProjectMarsden Fund ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Western Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government[NAG W-2166]
Funding OrganizationMarsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government ; Marsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government ; Marsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government ; Marsden Fund ; Marsden Fund ; Victoria University of Wellington ; Victoria University of Wellington ; Australian Government Research Training Programme scholarship ; Australian Government Research Training Programme scholarship ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Space Telescope Science Institute under U.S. Government ; Space Telescope Science Institute under U.S. Government
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000630057800001
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78678
Collection中国科学院国家天文台
Corresponding AuthorDuchesne, S. W.
Affiliation1.Victoria Univ Wellington, Sch Chem & Phys Sci, POB 600, Wellington 6140, New Zealand
2.Curtin Univ, Int Ctr Radio Astron Res ICRAR, Bentley, WA 6102, Australia
3.Curtin Univ, Curtin Inst Computat, GPO Box U1987, Perth, WA 6845, Australia
4.Netherlands Inst Radio Astron ASTRON, POB 2, NL-7990 AA Dwingeloo, Netherlands
5.Univ Paris Diderot, Univ Paris Saclay, Sorbonne Paris Cite, AIM,CEA,CNRS, F-91191 Gif Sur Yvette, France
6.Victoria Univ Wellington, Sch Engn & Comp Sci, POB 600, Wellington 6140, New Zealand
7.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
Duchesne, S. W.,Johnston-Hollitt, M.,Offringa, A. R.,et al. Diffuse galaxy cluster emission at 168 MHz within the Murchison Widefield Array Epoch of Reionization 0-h field[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,2021,38:26.
APA Duchesne, S. W.,Johnston-Hollitt, M.,Offringa, A. R.,Pratt, G. W.,Zheng, Q.,&Dehghan, S..(2021).Diffuse galaxy cluster emission at 168 MHz within the Murchison Widefield Array Epoch of Reionization 0-h field.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,38,26.
MLA Duchesne, S. W.,et al."Diffuse galaxy cluster emission at 168 MHz within the Murchison Widefield Array Epoch of Reionization 0-h field".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 38(2021):26.
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