Skip to main content

Research Repository

Advanced Search

A Triple Rollover: A third multiply-imaged source at z~6 behind the Jackpot gravitational lens

Collett, Thomas E.; Smith, Russell J.

A Triple Rollover: A third multiply-imaged source at z~6 behind the Jackpot gravitational lens Thumbnail


Authors

Thomas E. Collett



Abstract

Using a 5-h adaptive-optics-assisted observation with Multi-Unit Spectroscopic Explorer, we have identified a doubly imaged Ly α source at a redshift of 5.975 behind the z = 0.222 lens galaxy J0946+1006 (the ‘Jackpot’). The source separation implies an Einstein radius of ∼2.5 arcsec. Combined with the two previously known Einstein rings in this lens (radii 1.4 arcsec at z = 0.609 and 2.1 arcsec at z ≈ 2.4), this system is now a unique galaxy-scale triple-source-plane lens. We show that existing lensing models for J0946+1006 successfully map the two new observed images to a common point on the z = 5.975 source plane. The new source will provide further constraints on the mass distribution in the lens and in the two previously known sources. The third source also probes two new distance scaling factors that are sensitive to the cosmological parameters of the Universe. We show that detection of a new multiply imaged emission-line source is not unexpected in observations of this depth; similar data for other known lenses should reveal a larger sample of multiple-image-plane systems for cosmography and other applications.

Citation

Collett, T. E., & Smith, R. J. (2020). A Triple Rollover: A third multiply-imaged source at z~6 behind the Jackpot gravitational lens. Monthly Notices of the Royal Astronomical Society, 497(2), 1654-1660. https://doi.org/10.1093/mnras/staa1804

Journal Article Type Article
Acceptance Date Jun 13, 2020
Online Publication Date Jun 23, 2020
Publication Date 2020-09
Deposit Date Jun 24, 2020
Publicly Available Date Aug 23, 2020
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 497
Issue 2
Pages 1654-1660
DOI https://doi.org/10.1093/mnras/staa1804
Related Public URLs https://arxiv.org/abs/2004.00649

Files

Published Journal Article (3.7 Mb)
PDF

Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.







You might also like



Downloadable Citations