CaltechAUTHORS
  A Caltech Library Service

Further support for a trio of mass-to-light deviations in Abell 370: free-form grale lens inversion using BUFFALO strong lensing data

Ghosh, Agniva and Williams, Liliya L. R. and Liesenborgs, Jori and Acebron, Ana and Jauzac, Mathilde and Koekemoer, Anton M. and Mahler, Guillaume and Niemiec, Anna and Steinhardt, Charles and Faisst, Andreas L. and Lagattuta, David and Natarajan, Priyamvada (2021) Further support for a trio of mass-to-light deviations in Abell 370: free-form grale lens inversion using BUFFALO strong lensing data. Monthly Notices of the Royal Astronomical Society, 506 (4). pp. 6144-6158. ISSN 0035-8711. doi:10.1093/mnras/stab1196. https://resolver.caltech.edu/CaltechAUTHORS:20211108-203838376

[img] PDF - Published Version
See Usage Policy.

5MB
[img] PDF - Accepted Version
See Usage Policy.

4MB
[img] PDF - Erratum
See Usage Policy.

174kB
[img] Archive (ZIP) (Supplementary data) - Supplemental Material
See Usage Policy.

1kB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20211108-203838376

Abstract

We use the Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) strong lensing image catalogue of the merging galaxy cluster Abell 370 to obtain a mass model using free-form lens inversion algorithm GRALE. The improvement of the strong lensing data quality results in a lens plane rms of only 0.45 arcsec, about a factor of two lower than that of our existing HFF v4 reconstruction. We attribute the improvement to spectroscopic data and use of the full reprocessed HST mosaics. In our reconstructed mass model, we found indications of three distinct mass features in Abell 370: (i) a ∼35 kpc offset between the northern BCG and the nearest mass peak, (ii) a ∼100 kpc mass concentration of roughly critical density ∼250 kpc east of the main cluster, and (iii) a probable filament-like structure passing N-S through the cluster. While (i) is present in some form in most publicly available reconstructions spanning the range of modelling techniques: parametric, hybrid, and free-form, (ii) and (iii) are recovered by only about half of the reconstructions. We tested our hypothesis on the presence of the filament-like structure by creating a synthetic cluster – Irtysh IIIc – mocking the situation of a cluster with external mass. We also computed the source plane magnification distributions. Using them, we estimated the probabilities of magnifications in the source plane, and scrutinized their redshift dependence. Finally, we explored the lensing effects of Abell 370 on the luminosity functions of sources at z_s = 9.0, finding it consistent with published results.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1093/mnras/stab1196DOIArticle
https://doi.org/10.1093/mnras/stab2096DOIErratum
https://arxiv.org/abs/2104.11781arXivDiscussion Paper
ORCID:
AuthorORCID
Ghosh, Agniva0000-0001-5110-5433
Williams, Liliya L. R.0000-0002-6039-8706
Liesenborgs, Jori0000-0002-3648-8031
Acebron, Ana0000-0003-3108-9039
Jauzac, Mathilde0000-0003-1974-8732
Koekemoer, Anton M.0000-0002-6610-2048
Mahler, Guillaume0000-0003-3266-2001
Niemiec, Anna0000-0003-3791-2647
Steinhardt, Charles0000-0003-3780-6801
Faisst, Andreas L.0000-0002-9382-9832
Lagattuta, David0000-0002-7633-2883
Natarajan, Priyamvada0000-0002-5554-8896
Additional Information:© 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model). Accepted 2021 April 23. Received 2021 April 22; in original form 2020 December 29. Published: 28 April 2021. The authors would like to thank the anonymous reviewer for their helpful comments that improved the paper. AG and LLRW acknowledge the support and the computational resources of Minnesota Supercomputing Institute (MSI) which were crucial for this work. MJ is supported by the United Kingdom Research and Innovation (UKRI) Future Leaders Fellowship ‘Using Cosmic Beasts to uncover the Nature of Dark Matter’ (grant number MR/S017216/1). GM received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No MARACAS - DLV-896778. Data Availability: The lens inversion data underlying this article will be shared on reasonable request to the corresponding author. The strong lensing image set used in this work (see Table 1) is available as online supplementary material to this article.
Errata:Agniva Ghosh, Liliya L R Williams, Jori Liesenborgs, Ana Acebron, Mathilde Jauzac, Anton M Koekemoer, Guillaume Mahler, Anna Niemiec, Charles Steinhardt, Andreas L Faisst, David Lagattuta, Priyamvada Natarajan, Erratum: Further support for a trio of mass-to-light deviations in Abell 370: free-form GRALE lens inversion using BUFFALO strong lensing data, Monthly Notices of the Royal Astronomical Society, Volume 506, Issue 4, October 2021, Page 6159, https://doi.org/10.1093/mnras/stab2096
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
United Kingdom Research and Innovation (UKRI)MR/S017216/1
Marie Curie Fellowship896778
Subject Keywords:gravitational lensing: strong – galaxies: clusters: individual: Abell 370
Issue or Number:4
DOI:10.1093/mnras/stab1196
Record Number:CaltechAUTHORS:20211108-203838376
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20211108-203838376
Official Citation:Agniva Ghosh, Liliya L R Williams, Jori Liesenborgs, Ana Acebron, Mathilde Jauzac, Anton M Koekemoer, Guillaume Mahler, Anna Niemiec, Charles Steinhardt, Andreas L Faisst, David Lagattuta, Priyamvada Natarajan, Further support for a trio of mass-to-light deviations in Abell 370: free-form GRALE lens inversion using BUFFALO strong lensing data, Monthly Notices of the Royal Astronomical Society, Volume 506, Issue 4, October 2021, Pages 6144–6158, https://doi.org/10.1093/mnras/stab1196
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111790
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Nov 2021 21:27
Last Modified:06 Apr 2022 17:18

Repository Staff Only: item control page