Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20
On 2004 December 27, the magnetar SGR 1806-20 underwent an enormous outburst resulting in the formation of an expanding, moving, and fading radio source. We report observations of this radio source with the Multi-Element Radio-Linked Interferometer Network and the Very Long Baseline Array. The obser...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
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Wiley-Blackwell Publishing Ltd.
2006
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| Subjects: | |
| Online Access: | http://onlinelibrary.wiley.com/doi/10.1111/j.1745-3933.2006.00123.x/full http://hdl.handle.net/20.500.11937/5404 |
| _version_ | 1848744786587025408 |
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| author | Fender, R. Muxlow, T. Garrett, M. Kouveliotou, C. Gaensler, B. Garrington, S. Paragi, Z. Tudose, V. Miller-Jones, James Spencer, R. Wijers, R. Taylor, G. |
| author_facet | Fender, R. Muxlow, T. Garrett, M. Kouveliotou, C. Gaensler, B. Garrington, S. Paragi, Z. Tudose, V. Miller-Jones, James Spencer, R. Wijers, R. Taylor, G. |
| author_sort | Fender, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | On 2004 December 27, the magnetar SGR 1806-20 underwent an enormous outburst resulting in the formation of an expanding, moving, and fading radio source. We report observations of this radio source with the Multi-Element Radio-Linked Interferometer Network and the Very Long Baseline Array. The observations confirm the elongation and expansion already reported based on observations at lower angular resolutions, but suggest that at early epochs the structure is not consistent with the very simplest models such as a smooth flux distribution. In particular, there appears to be significant structure on small angular scales, with ~10 per cent of the radio flux arising on angular scales <=100 milliarcsec. This structure may correspond to localized sites of particle acceleration during the early phases of expansion and interaction with the ambient medium. |
| first_indexed | 2025-11-14T06:07:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-5404 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:07:00Z |
| publishDate | 2006 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-54042019-02-19T04:25:52Z Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 Fender, R. Muxlow, T. Garrett, M. Kouveliotou, C. Gaensler, B. Garrington, S. Paragi, Z. Tudose, V. Miller-Jones, James Spencer, R. Wijers, R. Taylor, G. pulsars: individual: SGR1806-20 radio continuum: stars ISM: jets and outflows On 2004 December 27, the magnetar SGR 1806-20 underwent an enormous outburst resulting in the formation of an expanding, moving, and fading radio source. We report observations of this radio source with the Multi-Element Radio-Linked Interferometer Network and the Very Long Baseline Array. The observations confirm the elongation and expansion already reported based on observations at lower angular resolutions, but suggest that at early epochs the structure is not consistent with the very simplest models such as a smooth flux distribution. In particular, there appears to be significant structure on small angular scales, with ~10 per cent of the radio flux arising on angular scales <=100 milliarcsec. This structure may correspond to localized sites of particle acceleration during the early phases of expansion and interaction with the ambient medium. 2006 Journal Article http://hdl.handle.net/20.500.11937/5404 http://onlinelibrary.wiley.com/doi/10.1111/j.1745-3933.2006.00123.x/full Wiley-Blackwell Publishing Ltd. restricted |
| spellingShingle | pulsars: individual: SGR1806-20 radio continuum: stars ISM: jets and outflows Fender, R. Muxlow, T. Garrett, M. Kouveliotou, C. Gaensler, B. Garrington, S. Paragi, Z. Tudose, V. Miller-Jones, James Spencer, R. Wijers, R. Taylor, G. Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 |
| title | Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 |
| title_full | Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 |
| title_fullStr | Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 |
| title_full_unstemmed | Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 |
| title_short | Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20 |
| title_sort | structure in the radio counterpart to the 2004 december 27 giant flare from sgr 1806-20 |
| topic | pulsars: individual: SGR1806-20 radio continuum: stars ISM: jets and outflows |
| url | http://onlinelibrary.wiley.com/doi/10.1111/j.1745-3933.2006.00123.x/full http://hdl.handle.net/20.500.11937/5404 |