SIMBAD references

2007MNRAS.382..455G - Mon. Not. R. Astron. Soc., 382, 455-460 (2007/November-3)

Giant Metrewave Radio Telescope low-frequency observations of extrasolar planetary systems.


Abstract (from CDS):

Extrasolar planets are expected to emit detectable low-frequency radio emission. In this paper, we present results from new low-frequency observations of two extrasolar planetary systems (Epsilon Eridani and HD128311) taken at 150MHz with the Giant Metrewave Radio Telescope (GMRT). These two systems have been chosen because the stars are young (with ages <1 Gyr) and are likely to have strong stellar winds, which will increase the expected radio flux. The planets are massive (presumably) gas giant planets in longer period orbits, and hence will not be tidally locked to their host star (as is likely to be the case for short-period planets) and we would expect them to have a strong planetary dynamo and magnetic field. We do not detect either system, but are able to place tight upper limits on their low-frequency radio emission, at levels comparable to the theoretical predictions for these systems. From these observations, we have a 2.5σ limit of 7.8 mJy for ε Eri and 15.5 mJy for HD128311. In addition, these upper limits also provide limits on the low-frequency radio emission from the stars themselves. These results are discussed and also the prospects for the future detection of radio emission from extrasolar planets.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): magnetic field - planetary systems - radio continuum: general

CDS comments: In Chap 4.1 : TXS 1432+07 is in incomplete format. It could be TXS 1432+097.

Simbad objects: 14

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