The Library
Exploring compact binary merger host galaxies and environments with zELDA
Tools
Tools
Tools
Mandhai, S., Lamb, G. P., Tanvir, N. R., Bray, J., Nixon, C. J., Eyles-Ferris, R. A. J., Levan, A. J. and Gompertz, B. P. (2022) Exploring compact binary merger host galaxies and environments with zELDA. Monthly Notices of the Royal Astronomical Society, 514 (2). pp. 2716-2735. doi:10.1093/mnras/stac1473 ISSN 0035-8711.
|
PDF
WRAP-exploring-compact-binary-merger-host-galaxies-environments-zELDA-Levan-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (3672Kb) | Preview |
Official URL: https://doi.org/10.1093/mnras/stac1473
Abstract
Compact binaries such as double neutron stars or a neutron star paired with a black hole, are strong sources of gravitational waves during coalescence and also the likely progenitors of various electromagnetic phenomena, notably short-duration gamma-ray bursts (SGRBs), and kilonovae. In this work, we generate populations of synthetic binaries and place them in galaxies from the large-scale hydrodynamical galaxy evolution simulation, EAGLE. With our ZELDA code, binaries are seeded in proportion to star formation rate, and we follow their evolution to merger using both the BPASS and COSMIC binary stellar evolution codes. We track their dynamical evolution within their host galaxy potential, to estimate the galactocentric distance at the time of the merger. Finally, we apply observational selection criteria to allow comparison of this model population with the legacy sample of SGRBs. We find a reasonable agreement with the redshift distribution (peaking at 0.5 < z < 1), host morphologies, and projected galactocentric offsets (modal impact parameter ≲10 kpc). Depending on the binary simulation used, we predict ∼16−35 per cent of SGRB events would appear ‘host-less’, i.e. sources that merge with high impact parameters or have hosts fainter than the detection limit (H > 26)
| Item Type: | Journal Article | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||
| SWORD Depositor: | Library Publications Router | |||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Gamma ray bursts, Neutron stars , Compact objects (Astronomy), Black holes (Astronomy), Double stars | |||||||||||||||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||||||||||||||
| Publisher: | Wiley | |||||||||||||||||||||
| ISSN: | 0035-8711 | |||||||||||||||||||||
| Official Date: | August 2022 | |||||||||||||||||||||
| Dates: |
|
|||||||||||||||||||||
| Volume: | 514 | |||||||||||||||||||||
| Number: | 2 | |||||||||||||||||||||
| Page Range: | pp. 2716-2735 | |||||||||||||||||||||
| DOI: | 10.1093/mnras/stac1473 | |||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||
| Date of first compliant deposit: | 25 November 2022 | |||||||||||||||||||||
| Date of first compliant Open Access: | 29 November 2022 | |||||||||||||||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
