Source Finding in the Era of the SKA (Precursors): Aegean 2.0
In the era of the SKA precursors, telescopes are producing deeper, larger images of the sky on increasingly small time-scales. The greater size and volume of images place an increased demand on the software that we use to create catalogues, and so our source finding algorithms need to evolve accordi...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
Cambridge University Press
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/67297 |
| _version_ | 1848761529542901760 |
|---|---|
| author | Hancock, P. Trott, Cathryn Hurley-Walker, Natasha |
| author_facet | Hancock, P. Trott, Cathryn Hurley-Walker, Natasha |
| author_sort | Hancock, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In the era of the SKA precursors, telescopes are producing deeper, larger images of the sky on increasingly small time-scales. The greater size and volume of images place an increased demand on the software that we use to create catalogues, and so our source finding algorithms need to evolve accordingly. In this paper, we discuss some of the logistical and technical challenges that result from the increased size and volume of images that are to be analysed, and demonstrate how the Aegean source finding package has evolved to address these challenges. In particular, we address the issues of source finding on spatially correlated data, and on images in which the background, noise, and point spread function vary across the sky. We also introduce the concept of forced or prioritised fitting. |
| first_indexed | 2025-11-14T10:33:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-67297 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:33:07Z |
| publishDate | 2018 |
| publisher | Cambridge University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-672972019-03-20T00:34:24Z Source Finding in the Era of the SKA (Precursors): Aegean 2.0 Hancock, P. Trott, Cathryn Hurley-Walker, Natasha In the era of the SKA precursors, telescopes are producing deeper, larger images of the sky on increasingly small time-scales. The greater size and volume of images place an increased demand on the software that we use to create catalogues, and so our source finding algorithms need to evolve accordingly. In this paper, we discuss some of the logistical and technical challenges that result from the increased size and volume of images that are to be analysed, and demonstrate how the Aegean source finding package has evolved to address these challenges. In particular, we address the issues of source finding on spatially correlated data, and on images in which the background, noise, and point spread function vary across the sky. We also introduce the concept of forced or prioritised fitting. 2018 Journal Article http://hdl.handle.net/20.500.11937/67297 10.1017/pasa.2018.3 Cambridge University Press fulltext |
| spellingShingle | Hancock, P. Trott, Cathryn Hurley-Walker, Natasha Source Finding in the Era of the SKA (Precursors): Aegean 2.0 |
| title | Source Finding in the Era of the SKA (Precursors): Aegean 2.0 |
| title_full | Source Finding in the Era of the SKA (Precursors): Aegean 2.0 |
| title_fullStr | Source Finding in the Era of the SKA (Precursors): Aegean 2.0 |
| title_full_unstemmed | Source Finding in the Era of the SKA (Precursors): Aegean 2.0 |
| title_short | Source Finding in the Era of the SKA (Precursors): Aegean 2.0 |
| title_sort | source finding in the era of the ska (precursors): aegean 2.0 |
| url | http://hdl.handle.net/20.500.11937/67297 |