A wider audience: Turning VLBI into a survey instrument
Radio observations using the Very Long Baseline Interferometry (VLBI) technique typically have fields of view of only a few arcseconds, due to the computational problems inherent in imaging larger fields. Furthermore, sensitivity limitations restrict observations to very compact and bright objects,...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Wiley - V C H Verlag GmbH & Co. KGaA
2012
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| Online Access: | http://onlinelibrary.wiley.com/doi/10.1002/asna.201211687/abstract http://hdl.handle.net/20.500.11937/18713 |
| _version_ | 1848749824083492864 |
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| author | Middelberg, E Deller, A Brisken, W Morgan, John Norris, R |
| author_facet | Middelberg, E Deller, A Brisken, W Morgan, John Norris, R |
| author_sort | Middelberg, E |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Radio observations using the Very Long Baseline Interferometry (VLBI) technique typically have fields of view of only a few arcseconds, due to the computational problems inherent in imaging larger fields. Furthermore, sensitivity limitations restrict observations to very compact and bright objects, which are few and far between on the sky. Thus, while most branches of observational astronomy can carry out sensitive, wide-field surveys, VLBI observations are limited to targeted observations of carefully selected objects. However, recent advances in technology have made it possible to carry out the computations required to target hundreds of sources simultaneously. Furthermore, sensitivity upgrades have dramatically increased the number of objects accessible to VLBI observations. The combination of these two developments have enhanced the survey capabilities of VLBI observations such that it is now possible to observe (almost) any point in the sky with milli-arcsecond resolution. In this talk I review the development of wide-field VLBI, which has made significant progress over the last three years. |
| first_indexed | 2025-11-14T07:27:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-18713 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:27:04Z |
| publishDate | 2012 |
| publisher | Wiley - V C H Verlag GmbH & Co. KGaA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-187132019-02-19T04:26:14Z A wider audience: Turning VLBI into a survey instrument Middelberg, E Deller, A Brisken, W Morgan, John Norris, R methods interferometric observational surveys techniques interferometers instrumentation Radio observations using the Very Long Baseline Interferometry (VLBI) technique typically have fields of view of only a few arcseconds, due to the computational problems inherent in imaging larger fields. Furthermore, sensitivity limitations restrict observations to very compact and bright objects, which are few and far between on the sky. Thus, while most branches of observational astronomy can carry out sensitive, wide-field surveys, VLBI observations are limited to targeted observations of carefully selected objects. However, recent advances in technology have made it possible to carry out the computations required to target hundreds of sources simultaneously. Furthermore, sensitivity upgrades have dramatically increased the number of objects accessible to VLBI observations. The combination of these two developments have enhanced the survey capabilities of VLBI observations such that it is now possible to observe (almost) any point in the sky with milli-arcsecond resolution. In this talk I review the development of wide-field VLBI, which has made significant progress over the last three years. 2012 Journal Article http://hdl.handle.net/20.500.11937/18713 http://onlinelibrary.wiley.com/doi/10.1002/asna.201211687/abstract Wiley - V C H Verlag GmbH & Co. KGaA restricted |
| spellingShingle | methods interferometric observational surveys techniques interferometers instrumentation Middelberg, E Deller, A Brisken, W Morgan, John Norris, R A wider audience: Turning VLBI into a survey instrument |
| title | A wider audience: Turning VLBI into a survey instrument |
| title_full | A wider audience: Turning VLBI into a survey instrument |
| title_fullStr | A wider audience: Turning VLBI into a survey instrument |
| title_full_unstemmed | A wider audience: Turning VLBI into a survey instrument |
| title_short | A wider audience: Turning VLBI into a survey instrument |
| title_sort | wider audience: turning vlbi into a survey instrument |
| topic | methods interferometric observational surveys techniques interferometers instrumentation |
| url | http://onlinelibrary.wiley.com/doi/10.1002/asna.201211687/abstract http://hdl.handle.net/20.500.11937/18713 |