Bibcode
Asensio Ramos, A.; Martínez González, M. J.; Manso Sainz, R.; Corradi, R. L. M.; Leone, F.
Bibliographical reference
The Astrophysical Journal, Volume 787, Issue 2, article id. 111, 7 pp. (2014).
Advertised on:
6
2014
Journal
Citations
15
Refereed citations
13
Description
More than about 20 central stars of planetary nebulae (CSPNs) have been
observed spectropolarimetrically, yet no clear, unambiguous signal of
the presence of a magnetic field in these objects has been found. We
perform a statistical (Bayesian) analysis of all the available
spectropolarimetric observations of CSPN to constrain the magnetic
fields in these objects. Assuming that the stellar field is dipolar and
that the dipole axis of the objects is oriented randomly
(isotropically), we find that the dipole magnetic field strength is
smaller than 400 G with 95% probability using all available
observations. The analysis introduced allows integration of future
observations to further constrain the parameters of the distribution,
and it is general, so that it can be easily applied to other classes of
magnetic objects. We propose several ways to improve the upper limits
found here.
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