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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29493
Title: 3D modelling of stellar auroral radio emission
Authors: LETO, PAOLO 
TRIGILIO, CORRADO 
BUEMI, CARLA SIMONA 
UMANA, Grazia Maria Gloria 
INGALLINERA, Adriano 
Cerrigone, L.
Issue Date: 2016
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 459
Issue: 2
First Page: 1159
Abstract: The electron cyclotron maser is the coherent emission process that gives rise to the radio lighthouse effect observed in the hot magnetic chemically peculiar star CU Virginis. It has also been proposed to explain the highly circularly polarized radio pulses observed in some ultracool dwarfs with spectral type earlier than M7. Coherent events of this kind resemble auroral radio emission from the magnetized planets of the Solar system. In this article, we present a three-dimensional model able to simulate the timing and profile of the pulses emitted by those stars characterized by a dipolar magnetic field by following the hypothesis of the laminar source model, used to explain the beaming of terrestrial auroral kilometric radiation. This model proves to be a powerful tool with which to understand the auroral radio emission phenomenon, allowing us to derive some general conclusions about the effects of the model's free parameters on the features of coherent pulses and to learn more about the detectability of such pulsed radio emission.
URI: http://hdl.handle.net/20.500.12386/29493
URL: http://arxiv.org/abs/1603.02423v1
https://academic.oup.com/mnras/article/459/2/1159/2595005
ISSN: 0035-8711
DOI: 10.1093/mnras/stw639
Bibcode ADS: 2016MNRAS.459.1159L
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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