Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence
Observations of the black hole X-ray binary V404 Cyg with the very long baseline interferometer the High Sensitivity Array (HSA) have detected the source at a frequency of 8.4 GHz, providing a source position accurate to 0.3 mas relative to the calibrator source. The observations put an upper limit...
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| Format: | Journal Article |
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Wiley-Blackwell Publishing Ltd.
2008
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| Online Access: | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2008.13495.x/full http://hdl.handle.net/20.500.11937/42925 |
| _version_ | 1848756550603112448 |
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| author | Miller-Jones, James Gallo, E. Rupen, M. Mioduszewski, A. Brisken, W. Fender, R. Jonker, P. Maccarone, T. |
| author_facet | Miller-Jones, James Gallo, E. Rupen, M. Mioduszewski, A. Brisken, W. Fender, R. Jonker, P. Maccarone, T. |
| author_sort | Miller-Jones, James |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Observations of the black hole X-ray binary V404 Cyg with the very long baseline interferometer the High Sensitivity Array (HSA) have detected the source at a frequency of 8.4 GHz, providing a source position accurate to 0.3 mas relative to the calibrator source. The observations put an upper limit of 1.3 mas on the source size (5.2 au at 4 kpc) and a lower limit of 7 × 10^6 K on its brightness temperature during the normal quiescent state, implying that the radio emission must be non-thermal, most probably synchrotron radiation, possibly from a jet. The radio light curves show a short flare, with a rise time of ~30 min, confirming that the source remains active in the quiescent state. |
| first_indexed | 2025-11-14T09:13:59Z |
| format | Journal Article |
| id | curtin-20.500.11937-42925 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:13:59Z |
| publishDate | 2008 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-429252019-02-19T04:27:57Z Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence Miller-Jones, James Gallo, E. Rupen, M. Mioduszewski, A. Brisken, W. Fender, R. Jonker, P. Maccarone, T. astrometry stars: individual: V404 Cyg radio continuum: stars X-rays: binaries ISM: jets and outflows Observations of the black hole X-ray binary V404 Cyg with the very long baseline interferometer the High Sensitivity Array (HSA) have detected the source at a frequency of 8.4 GHz, providing a source position accurate to 0.3 mas relative to the calibrator source. The observations put an upper limit of 1.3 mas on the source size (5.2 au at 4 kpc) and a lower limit of 7 × 10^6 K on its brightness temperature during the normal quiescent state, implying that the radio emission must be non-thermal, most probably synchrotron radiation, possibly from a jet. The radio light curves show a short flare, with a rise time of ~30 min, confirming that the source remains active in the quiescent state. 2008 Journal Article http://hdl.handle.net/20.500.11937/42925 http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2008.13495.x/full Wiley-Blackwell Publishing Ltd. restricted |
| spellingShingle | astrometry stars: individual: V404 Cyg radio continuum: stars X-rays: binaries ISM: jets and outflows Miller-Jones, James Gallo, E. Rupen, M. Mioduszewski, A. Brisken, W. Fender, R. Jonker, P. Maccarone, T. Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence |
| title | Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence |
| title_full | Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence |
| title_fullStr | Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence |
| title_full_unstemmed | Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence |
| title_short | Zooming in on a sleeping giant: milliarcsecond High Sensitivity Array imaging of the black hole binary V404 Cyg in quiescence |
| title_sort | zooming in on a sleeping giant: milliarcsecond high sensitivity array imaging of the black hole binary v404 cyg in quiescence |
| topic | astrometry stars: individual: V404 Cyg radio continuum: stars X-rays: binaries ISM: jets and outflows |
| url | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2008.13495.x/full http://hdl.handle.net/20.500.11937/42925 |