Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/6183
Title: | Limits on low-frequency radio emission from southern exoplanets with the Murchison widefield array |
Authors: | Murphy, Tara Deshpande, A.A. Prabu, T. Udaya Shankar, N. Srivani, K.S. Subrahmanyan, Ravi +25 Co-authors |
Keywords: | radio continuum planetary systems |
Issue Date: | 21-Jan-2015 |
Citation: | Monthly Notices of the Royal Astronomical Society, 2015, Vol. 446, p2560-2565 |
Abstract: | 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. |
Description: | Open Access |
URI: | http://hdl.handle.net/2289/6183 |
ISSN: | 0035-8711 1365-2966 - (online) |
Alternative Location: | http://adsabs.harvard.edu/abs/2015MNRAS.446.2560M http://arxiv.org/abs/1410.6819 http://dx.doi.org/10.1093/mnras/stu2253 |
Copyright: | 2014 The authors & the Royal Astronomical Society |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2015_MNRAS_446_2560.pdf | Open Access | 252.77 kB | Adobe PDF | View/Open |
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