Copy the page URI to the clipboard
Serjeant, S.
(2014).
DOI: https://doi.org/10.1088/2041-8205/793/1/L10
Abstract
The Euclid space telescope will observe ~105 strong galaxy-galaxy gravitational lens events in its wide field imaging survey over around half the sky, but identifying the gravitational lenses from their observed morphologies requires solving the difficult problem of reliably separating the lensed sources from contaminant populations, such as tidal tails, as well as presenting challenges for spectroscopic follow-up redshift campaigns. Here I present alternative selection techniques for strong gravitational lenses in both Euclid and the Square Kilometre Array, exploiting the strong magnification bias present in the steep end of the Hα luminosity function and the H I mass function. Around 103 strong lensing events are detectable with this method in the Euclid wide survey. While only ~1% of the total haul of Euclid lenses, this sample has ~100% reliability, known source redshifts, high signal-to-noise, and a magnification-based selection independent of assumptions of lens morphology. With the proposed Square Kilometre Array dark energy survey, the numbers of reliable strong gravitational lenses with source redshifts can reach 105.
Viewing alternatives
Metrics
Public Attention
Altmetrics from AltmetricNumber of Citations
Citations from DimensionsItem Actions
Export
About
- Item ORO ID
- 43574
- Item Type
- Journal Item
- ISSN
- 2041-8213
- Project Funding Details
-
Funded Project Name Project ID Funding Body Open University Consolidated Grant Phase 1 (SP-11-010-GW) ST/J001597/1 STFC - Extra Information
- 5 pp.
- Keywords
- cosmology; galactic evolution; galactic formation; starburst galaxies; infrared; galaxies
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Research Group
- Space
- Copyright Holders
- © 2014 The American Astronomical Society
- Depositing User
- Stephen Serjeant