Reference : Probing the existence of axions with the polarization of objects at cosmological distances

	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/81302

Title :	Probing the existence of axions with the polarization of objects at cosmological distances
Language :	English
Author, co-author :	Hutsemekers, Damien [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Publication date :	2006
Peer reviewed :	No
Audience :	International
Event name :	2nd Joint ILIAS-CAST-CERN axion training workshop
Event date :	May 18-19
Event place (city) :	Patras
Event country :	Greece
Keywords :	[en] quasar ; polarization ; axions
Abstract :	[en] Photon - axion conversion within a magnetic field over cosmological distances can affect the polarization of distant objects like quasars. We report the observation of large-scale alignments of quasar polarization vectors as well as a rotation of their polarization angles with distance. This effect might be due to the presence of axions along the line of sight.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/81302
Other URL :	http://indico.cern.ch/materialDisplay.py?contribId=19&materialId=slides&confId=1743

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	Fulltext file(s): File Commentary Version Size Access Open access patras_may06.pdf Author preprint 880.18 kB View/Open

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