Limits on low-frequency radio emission from southern exoplanets with the murchison widefield array

Murphy, T; Bell, ME; Kaplan, DL; Gaensler, BM; Offringa, AR; Lenc, E; Hurley-Walker, N; Bernardi, G; Bowman, JD; Briggs, F; Cappallo, RJ; Corey, BE; Deshpande, AA; Emrich, D; Goeke, R; Greenhill, LJ; Hazelton, BJ; Hewitt, JN; Johnston-Hollitt, M; Kasper, JC; Kratzenberg, E; Lonsdale, CJ; Lynch, MJ; McWhirter, SR; Mitchell, DA; Morales, MF; Morgan, E; Oberoi, D; Ord, SM; Prabu, T; Rogers, AEE; Roshi, DA; Udaya Shankar, N; Srivani, KS; Subrahmanyan, R; Tingay, SJ; Waterson, M; Wayth, RB; Webster, RL; Whitney, AR; Williams, A; Williams, CL

Limits on low-frequency radio emission from southern exoplanets with the murchison widefield array

Murphy, T Bell, ME

Kaplan, DL Gaensler, BM Offringa, AR Lenc, E Hurley-Walker, N Bernardi, G Bowman, JD Briggs, F Cappallo, RJ Corey, BE Deshpande, AA Emrich, D Goeke, R Greenhill, LJ Hazelton, BJ Hewitt, JN Johnston-Hollitt, M Kasper, JC Kratzenberg, E Lonsdale, CJ Lynch, MJ McWhirter, SR Mitchell, DA Morales, MF Morgan, E Oberoi, D Ord, SM Prabu, T Rogers, AEE Roshi, DA Udaya Shankar, N Srivani, KS Subrahmanyan, R Tingay, SJ Waterson, M Wayth, RB Webster, RL Whitney, AR Williams, A Williams, CL

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Publication Type:: Journal Article
Citation:: Monthly Notices of the Royal Astronomical Society, 2015, 446 (3), pp. 2560 - 2565
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Murphy, T	en_US
dc.contributor.author	Bell, ME https://orcid.org/0000-0003-1767-5277	en_US
dc.contributor.author	Kaplan, DL	en_US
dc.contributor.author	Gaensler, BM	en_US
dc.contributor.author	Offringa, AR	en_US
dc.contributor.author	Lenc, E	en_US
dc.contributor.author	Hurley-Walker, N	en_US
dc.contributor.author	Bernardi, G	en_US
dc.contributor.author	Bowman, JD	en_US
dc.contributor.author	Briggs, F	en_US
dc.contributor.author	Cappallo, RJ	en_US
dc.contributor.author	Corey, BE	en_US
dc.contributor.author	Deshpande, AA	en_US
dc.contributor.author	Emrich, D	en_US
dc.contributor.author	Goeke, R	en_US
dc.contributor.author	Greenhill, LJ	en_US
dc.contributor.author	Hazelton, BJ	en_US
dc.contributor.author	Hewitt, JN	en_US
dc.contributor.author	Johnston-Hollitt, M	en_US
dc.contributor.author	Kasper, JC	en_US
dc.contributor.author	Kratzenberg, E	en_US
dc.contributor.author	Lonsdale, CJ	en_US
dc.contributor.author	Lynch, MJ	en_US
dc.contributor.author	McWhirter, SR	en_US
dc.contributor.author	Mitchell, DA	en_US
dc.contributor.author	Morales, MF	en_US
dc.contributor.author	Morgan, E	en_US
dc.contributor.author	Oberoi, D	en_US
dc.contributor.author	Ord, SM	en_US
dc.contributor.author	Prabu, T	en_US
dc.contributor.author	Rogers, AEE	en_US
dc.contributor.author	Roshi, DA	en_US
dc.contributor.author	Udaya Shankar, N	en_US
dc.contributor.author	Srivani, KS	en_US
dc.contributor.author	Subrahmanyan, R	en_US
dc.contributor.author	Tingay, SJ	en_US
dc.contributor.author	Waterson, M	en_US
dc.contributor.author	Wayth, RB	en_US
dc.contributor.author	Webster, RL	en_US
dc.contributor.author	Whitney, AR	en_US
dc.contributor.author	Williams, A	en_US
dc.contributor.author	Williams, CL	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	Monthly Notices of the Royal Astronomical Society, 2015, 446 (3), pp. 2560 - 2565	en_US
dc.identifier.issn	0035-8711	en_US
dc.identifier.uri	http://hdl.handle.net/10453/132087
dc.description.abstract	© 2014 The Authors. 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 3τ 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 3τ 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 Wif 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.	en_US
dc.relation.ispartof	Monthly Notices of the Royal Astronomical Society	en_US
dc.relation.isbasedon	10.1093/mnras/stu2253	en_US
dc.subject.classification	Astronomy & Astrophysics	en_US
dc.title	Limits on low-frequency radio emission from southern exoplanets with the murchison widefield array	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	446	en_US
utslib.for	0201 Astronomical and Space Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	446	en_US

Abstract:

© 2014 The Authors. 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 3τ 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 3τ 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 Wif 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.

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http://hdl.handle.net/10453/132087