Interstellar Scintillation and Scattering of Micro-arc-second AGN
The discovery of the first quasar 3C 273 led directly to the discovery of their variability at optical and radio wavelengths. We review the radio variability observations, in particular the variability found at frequencies below 1 GHz, as well as those exhibiting intra-day variability (IDV) at cm wa...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
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MDPI AG
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/63057 |
| _version_ | 1848760983166648320 |
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| author | Jauncey, D. Bignall, H. Kedziora-Chudczer, L. Koay, J. Lovell, J. Macquart, Jean-Pierre Ojha, R. Pursimo, T. Reynolds, C. Rickett, B. |
| author_facet | Jauncey, D. Bignall, H. Kedziora-Chudczer, L. Koay, J. Lovell, J. Macquart, Jean-Pierre Ojha, R. Pursimo, T. Reynolds, C. Rickett, B. |
| author_sort | Jauncey, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The discovery of the first quasar 3C 273 led directly to the discovery of their variability at optical and radio wavelengths. We review the radio variability observations, in particular the variability found at frequencies below 1 GHz, as well as those exhibiting intra-day variability (IDV) at cm wavelengths. Observations have shown that IDV arises principally from scintillation caused by scattering in the ionized interstellar medium of our Galaxy. The sensitivity of interstellar scintillation towards source angular sizes has provided a powerful tool for studying the most compact components of radio-loud AGN at microarcsecond and milliarcsecond scale resolution. |
| first_indexed | 2025-11-14T10:24:26Z |
| format | Journal Article |
| id | curtin-20.500.11937-63057 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:24:26Z |
| publishDate | 2016 |
| publisher | MDPI AG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-630572021-01-13T03:09:38Z Interstellar Scintillation and Scattering of Micro-arc-second AGN Jauncey, D. Bignall, H. Kedziora-Chudczer, L. Koay, J. Lovell, J. Macquart, Jean-Pierre Ojha, R. Pursimo, T. Reynolds, C. Rickett, B. The discovery of the first quasar 3C 273 led directly to the discovery of their variability at optical and radio wavelengths. We review the radio variability observations, in particular the variability found at frequencies below 1 GHz, as well as those exhibiting intra-day variability (IDV) at cm wavelengths. Observations have shown that IDV arises principally from scintillation caused by scattering in the ionized interstellar medium of our Galaxy. The sensitivity of interstellar scintillation towards source angular sizes has provided a powerful tool for studying the most compact components of radio-loud AGN at microarcsecond and milliarcsecond scale resolution. 2016 Journal Article http://hdl.handle.net/20.500.11937/63057 10.3390/galaxies4040062 http://creativecommons.org/licenses/by/4.0/ MDPI AG fulltext |
| spellingShingle | Jauncey, D. Bignall, H. Kedziora-Chudczer, L. Koay, J. Lovell, J. Macquart, Jean-Pierre Ojha, R. Pursimo, T. Reynolds, C. Rickett, B. Interstellar Scintillation and Scattering of Micro-arc-second AGN |
| title | Interstellar Scintillation and Scattering of Micro-arc-second AGN |
| title_full | Interstellar Scintillation and Scattering of Micro-arc-second AGN |
| title_fullStr | Interstellar Scintillation and Scattering of Micro-arc-second AGN |
| title_full_unstemmed | Interstellar Scintillation and Scattering of Micro-arc-second AGN |
| title_short | Interstellar Scintillation and Scattering of Micro-arc-second AGN |
| title_sort | interstellar scintillation and scattering of micro-arc-second agn |
| url | http://hdl.handle.net/20.500.11937/63057 |