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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/20.500.12386/27453
Title: Polarization properties of turbulent synchrotron bubbles: an approach based on Chandrasekhar-Kendall functions
Authors: BUCCIANTINI, NICCOLO' 
Issue Date: 2017
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 471
Issue: 4
First Page: 4885
Abstract: Synchrotron emitting bubbles arise when the outflow from a compact relativistic engine, either a Black Hole or a Neutron Star, impacts on the environment. The emission properties of synchrotron radiation are widely used to infer the dynamical properties of these bubbles, and from them the injection conditions of the engine. Radio polarization offers an important tool to investigate the level and spectrum of turbulence, the magnetic field configuration, and possibly the degree of mixing. Here we introduce a formalism based on Chandrasekhar-Kendall functions that allows us to properly take into account the geometry of the bubble, going beyond standard analysis based on periodic cartesian domains. We investigate how different turbulent spectra, magnetic helicity and particle distribution function, impact on global properties that are easily accessible to observations, even at low resolution, and we provide fitting formulae to relate observed quantities to the underlying magnetic field structure.
URI: http://hdl.handle.net/20.500.12386/27453
URL: http://arxiv.org/abs/1709.00885v1
https://academic.oup.com/mnras/article-abstract/471/4/4885/4079800?redirectedFrom=fulltext
ISSN: 0035-8711
DOI: 10.1093/mnras/stx1927
Bibcode ADS: 2017MNRAS.471.4885B
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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