The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay
We will detail the discovery of an anomalous terrestrial source of pulsed emission which exhibits a frequency-swept signal that closely mimics the frequency-dependent delay induced by dispersion in interstellar plasma. The signals were detected through the far sidelobes of Parkes Radio Telescope, ap...
| Main Authors: | , |
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| Format: | Conference Paper |
| Published: |
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/18888 |
| _version_ | 1848749876101251072 |
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| author | Burke-Spolaor, S. Ekers, Ronald |
| author_facet | Burke-Spolaor, S. Ekers, Ronald |
| author_sort | Burke-Spolaor, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We will detail the discovery of an anomalous terrestrial source of pulsed emission which exhibits a frequency-swept signal that closely mimics the frequency-dependent delay induced by dispersion in interstellar plasma. The signals were detected through the far sidelobes of Parkes Radio Telescope, appearing in all of the 13 independently-positioned receivers installed at the dish focus. The frequency-dependent delay and the sweep rates for most of the bursts are similar to those of a burst previously purported to be extragalactic. These bursts both call into question the extragalactic nature of that burst, and highlight the limitations of performing searches for one-off impulses with single dishes, in that they experience ambiguity in the positional localization of burst origins. © 2011 IEEE. |
| first_indexed | 2025-11-14T07:27:54Z |
| format | Conference Paper |
| id | curtin-20.500.11937-18888 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:27:54Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-188882017-09-13T13:44:34Z The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay Burke-Spolaor, S. Ekers, Ronald We will detail the discovery of an anomalous terrestrial source of pulsed emission which exhibits a frequency-swept signal that closely mimics the frequency-dependent delay induced by dispersion in interstellar plasma. The signals were detected through the far sidelobes of Parkes Radio Telescope, appearing in all of the 13 independently-positioned receivers installed at the dish focus. The frequency-dependent delay and the sweep rates for most of the bursts are similar to those of a burst previously purported to be extragalactic. These bursts both call into question the extragalactic nature of that burst, and highlight the limitations of performing searches for one-off impulses with single dishes, in that they experience ambiguity in the positional localization of burst origins. © 2011 IEEE. 2011 Conference Paper http://hdl.handle.net/20.500.11937/18888 10.1109/URSIGASS.2011.6051299 restricted |
| spellingShingle | Burke-Spolaor, S. Ekers, Ronald The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| title | The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| title_full | The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| title_fullStr | The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| title_full_unstemmed | The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| title_short | The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| title_sort | discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay |
| url | http://hdl.handle.net/20.500.11937/18888 |