ORBi: Payez Alexandre - Large-scale coherent orientations of quasar polarisation vectors: interpretation in terms of axion-like particles

Reference : Large-scale coherent orientations of quasar polarisation vectors: interpretation in term...


	Document type :	Scientific congresses and symposiums : Paper published in a journal
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/79539

Title :	Large-scale coherent orientations of quasar polarisation vectors: interpretation in terms of axion-like particles
Language :	English
Author, co-author :	Payez, Alexandre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique >]
	Hutsemekers, Damien [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Cudell, Jean-René [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique >]
Publication date :	2010
Journal title :	AIP Conference Proceedings
Publisher :	American Institute of Physics
Volume :	1274,
On invitation :	Yes
Audience :	International
ISSN :	0094-243X
Event name :	Axions 2010
Event date :	15th - 17th January 2010
Event organizer :	Guenakh Mitselmakher, Pierre Ramond, Neil Sullivan, David Tanner, Karl van Bibber
Event place (city) :	Gainesville
Event country :	FL
Keywords :	[en] axion ; quasar ; polarisation
Abstract :	[en] The observation of redshift-dependent coherent orientations of quasar polarisation vectors over cosmological distances in some regions of the sky is reviewed. Based on a good-quality sample of 355 measured quasars, this observation seems to infer the existence of a new effect acting on light propagation on such huge distances. A solution in terms of nearly massless axion-like particles has been proposed in the literature and its current status is discussed.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/79539

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