An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571
With the Australian Square Kilometre Array Pathfinder (ASKAP) we monitored the black hole candidate X-ray binary MAXI J1535-571 over seven epochs from 2017 September 21 to October 2. Using ASKAP observations, we studied the H i absorption spectrum from gas clouds along the line of sight and thereby...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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OXFORD UNIV PRESS
2019
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| Online Access: | http://dx.doi.org/10.1093/mnrasl/slz113 http://hdl.handle.net/20.500.11937/90314 |
| _version_ | 1848765368323014656 |
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| author | Chauhan, Jaiverdhan Miller-Jones, James Anderson, Gemma Raja, W. Bahramian, Arash Hotan, A. Indermuehle, B. Whiting, M. Allison, J.R. Anderson, C. Bunton, J. Koribalski, B. Mahony, E. |
| author_facet | Chauhan, Jaiverdhan Miller-Jones, James Anderson, Gemma Raja, W. Bahramian, Arash Hotan, A. Indermuehle, B. Whiting, M. Allison, J.R. Anderson, C. Bunton, J. Koribalski, B. Mahony, E. |
| author_sort | Chauhan, Jaiverdhan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | With the Australian Square Kilometre Array Pathfinder (ASKAP) we monitored the black hole candidate X-ray binary MAXI J1535-571 over seven epochs from 2017 September 21 to October 2. Using ASKAP observations, we studied the H i absorption spectrum from gas clouds along the line of sight and thereby constrained the distance to the source. The maximum negative radial velocities measured from the H i absorption spectra for MAXI J1535-571 and an extragalactic source in the same field of view are -69 ± 4 and -89 ± 4 km s-1, respectively. This rules out the far kinematic distance (9.3+0.5 -0.6 kpc), giving a most likely distance of 4.1+0.6 -0.5 kpc, with a strong upper limit of the tangent point at 6.7+0.1 -0.2 kpc. At our preferred distance, the peak unabsorbed luminosity of MAXI J1535-571 was >78 per cent of the Eddington luminosity, and shows that the soft-to-hard spectral state transition occurred at the very low luminosity of (1.2-3.4) × 10-5 times the Eddington luminosity. Finally, this study highlights the capabilities of new wide-field radio telescopes to probe Galactic transient outbursts, by allowing us to observe both a target source and a background comparison source in a single telescope pointing. |
| first_indexed | 2025-11-14T11:34:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-90314 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:34:08Z |
| publishDate | 2019 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-903142023-02-10T00:18:06Z An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 Chauhan, Jaiverdhan Miller-Jones, James Anderson, Gemma Raja, W. Bahramian, Arash Hotan, A. Indermuehle, B. Whiting, M. Allison, J.R. Anderson, C. Bunton, J. Koribalski, B. Mahony, E. Science & Technology Physical Sciences Astronomy & Astrophysics black hole physics ISM: jets and outflows X-rays: binaries X-rays: individual: MAXI J1535-571 VELOCITIES GAS With the Australian Square Kilometre Array Pathfinder (ASKAP) we monitored the black hole candidate X-ray binary MAXI J1535-571 over seven epochs from 2017 September 21 to October 2. Using ASKAP observations, we studied the H i absorption spectrum from gas clouds along the line of sight and thereby constrained the distance to the source. The maximum negative radial velocities measured from the H i absorption spectra for MAXI J1535-571 and an extragalactic source in the same field of view are -69 ± 4 and -89 ± 4 km s-1, respectively. This rules out the far kinematic distance (9.3+0.5 -0.6 kpc), giving a most likely distance of 4.1+0.6 -0.5 kpc, with a strong upper limit of the tangent point at 6.7+0.1 -0.2 kpc. At our preferred distance, the peak unabsorbed luminosity of MAXI J1535-571 was >78 per cent of the Eddington luminosity, and shows that the soft-to-hard spectral state transition occurred at the very low luminosity of (1.2-3.4) × 10-5 times the Eddington luminosity. Finally, this study highlights the capabilities of new wide-field radio telescopes to probe Galactic transient outbursts, by allowing us to observe both a target source and a background comparison source in a single telescope pointing. 2019 Journal Article http://hdl.handle.net/20.500.11937/90314 10.1093/mnrasl/slz113 English http://dx.doi.org/10.1093/mnrasl/slz113 http://purl.org/au-research/grants/arc/FT140101082 http://purl.org/au-research/grants/arc/DE180100346 OXFORD UNIV PRESS fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics black hole physics ISM: jets and outflows X-rays: binaries X-rays: individual: MAXI J1535-571 VELOCITIES GAS Chauhan, Jaiverdhan Miller-Jones, James Anderson, Gemma Raja, W. Bahramian, Arash Hotan, A. Indermuehle, B. Whiting, M. Allison, J.R. Anderson, C. Bunton, J. Koribalski, B. Mahony, E. An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 |
| title | An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 |
| title_full | An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 |
| title_fullStr | An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 |
| title_full_unstemmed | An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 |
| title_short | An H i absorption distance to the black hole candidate X-ray binary MAXI J1535-571 |
| title_sort | h i absorption distance to the black hole candidate x-ray binary maxi j1535-571 |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics black hole physics ISM: jets and outflows X-rays: binaries X-rays: individual: MAXI J1535-571 VELOCITIES GAS |
| url | http://dx.doi.org/10.1093/mnrasl/slz113 http://dx.doi.org/10.1093/mnrasl/slz113 http://dx.doi.org/10.1093/mnrasl/slz113 http://hdl.handle.net/20.500.11937/90314 |