Article (Scientific journals)
Can axionlike particles explain the alignments of the polarizations of light from quasars?
Payez, Alexandre; Cudell, Jean-René; Hutsemekers, Damien
2011In Physical Review. D, Particles, Fields, Gravitation, and Cosmology, 84, p. 085029, pp. 1-17
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Keywords :
axion; polarisation; quasar; large-scale; alignment; wave-packet
Abstract :
[en] The standard axion-like particle explanation of the observed large-scale coherent orientations of quasar polarisation vectors is ruled out by the recent measurements of vanishing of circular polarisation. We introduce a more general wave-packet formalism and show that, although decoherence effects between waves of different frequencies can reduce significantly the amount of circular polarisation, the axion-like particle hypothesis is disfavoured given the bandwidth with which part of the observations were performed. Finally, we show that a more sophisticated model of extragalactic fields does not lead to an alignment of polarisations.
Disciplines :
Physics
Space science, astronomy & astrophysics
Author, co-author :
Payez, Alexandre ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique
Cudell, Jean-René  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique
Hutsemekers, Damien ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
Can axionlike particles explain the alignments of the polarizations of light from quasars?
Publication date :
25 October 2011
Journal title :
Physical Review. D, Particles, Fields, Gravitation, and Cosmology
ISSN :
1550-7998
eISSN :
1550-2368
Publisher :
American Physical Society, College Park, United States - Maryland
Volume :
84
Pages :
085029, pp. 1-17
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 July 2011

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