Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array
We present the results of a survey for low-frequency radio emission from 17 known exoplanetary systems with the Murchison Widefield Array. This sample includes 13 systems that have not previously been targeted with radio observations. We detected no radio emission at 154 MHz, and put 3σ upper limits...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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OXFORD UNIV PRESS
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/25218 |
| _version_ | 1848751647361073152 |
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| author | Murphy, T. Bell, M. Kaplan, D. Gaensler, B. Offringa, A. Lenc, E. Hurley-Walker, N. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Corey, B. Deshpande, A. Emrich, D. Goeke, R. Greenhill, L. Hazelton, B. Hewitt, J. Johnston-Hollitt, M. Kasper, J. Kratzenberg, E. Lonsdale, C. Lynch, Mervyn McWhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Rogers, A. Roshi, D. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Waterson, M. Wayth, Randall Webster, R. Whitney, A. Williams, A. Williams, C. |
| author_facet | Murphy, T. Bell, M. Kaplan, D. Gaensler, B. Offringa, A. Lenc, E. Hurley-Walker, N. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Corey, B. Deshpande, A. Emrich, D. Goeke, R. Greenhill, L. Hazelton, B. Hewitt, J. Johnston-Hollitt, M. Kasper, J. Kratzenberg, E. Lonsdale, C. Lynch, Mervyn McWhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Rogers, A. Roshi, D. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Waterson, M. Wayth, Randall Webster, R. Whitney, A. Williams, A. Williams, C. |
| author_sort | Murphy, T. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the results of a survey for low-frequency radio emission from 17 known exoplanetary systems with the Murchison Widefield Array. This sample includes 13 systems that have not previously been targeted with radio observations. We detected no radio emission at 154 MHz, and put 3σ upper limits in the range 15.2–112.5 mJy on this emission. We also searched for circularly polarized emission and made no detections, obtaining 3σ upper limits in the range 3.4–49.9 mJy. These are comparable with the best low-frequency radio limits in the existing literature and translate to luminosity limits of between 1.2 × 1014 and 1.4 × 1017 W if the emission is assumed to be 100 per cent circularly polarized. These are the first results from a larger program to systematically search for exoplanetary emission with the MWA. |
| first_indexed | 2025-11-14T07:56:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-25218 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:56:03Z |
| publishDate | 2015 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-252182017-09-13T15:22:17Z Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array Murphy, T. Bell, M. Kaplan, D. Gaensler, B. Offringa, A. Lenc, E. Hurley-Walker, N. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Corey, B. Deshpande, A. Emrich, D. Goeke, R. Greenhill, L. Hazelton, B. Hewitt, J. Johnston-Hollitt, M. Kasper, J. Kratzenberg, E. Lonsdale, C. Lynch, Mervyn McWhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Rogers, A. Roshi, D. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Waterson, M. Wayth, Randall Webster, R. Whitney, A. Williams, A. Williams, C. We present the results of a survey for low-frequency radio emission from 17 known exoplanetary systems with the Murchison Widefield Array. This sample includes 13 systems that have not previously been targeted with radio observations. We detected no radio emission at 154 MHz, and put 3σ upper limits in the range 15.2–112.5 mJy on this emission. We also searched for circularly polarized emission and made no detections, obtaining 3σ upper limits in the range 3.4–49.9 mJy. These are comparable with the best low-frequency radio limits in the existing literature and translate to luminosity limits of between 1.2 × 1014 and 1.4 × 1017 W if the emission is assumed to be 100 per cent circularly polarized. These are the first results from a larger program to systematically search for exoplanetary emission with the MWA. 2015 Journal Article http://hdl.handle.net/20.500.11937/25218 10.1093/mnras/stu2253 OXFORD UNIV PRESS fulltext |
| spellingShingle | Murphy, T. Bell, M. Kaplan, D. Gaensler, B. Offringa, A. Lenc, E. Hurley-Walker, N. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Corey, B. Deshpande, A. Emrich, D. Goeke, R. Greenhill, L. Hazelton, B. Hewitt, J. Johnston-Hollitt, M. Kasper, J. Kratzenberg, E. Lonsdale, C. Lynch, Mervyn McWhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Rogers, A. Roshi, D. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Waterson, M. Wayth, Randall Webster, R. Whitney, A. Williams, A. Williams, C. Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array |
| title | Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array |
| title_full | Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array |
| title_fullStr | Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array |
| title_full_unstemmed | Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array |
| title_short | Limits on low-frequency radio emission from southern exoplanets with the Murchison Widefield Array |
| title_sort | limits on low-frequency radio emission from southern exoplanets with the murchison widefield array |
| url | http://hdl.handle.net/20.500.11937/25218 |