Dependence of residual rotation measure on intervening Mg II absorbers at cosmic distances

dc.contributor.author	Joshi, R.
dc.contributor.author	Chand, H.
dc.date.accessioned	2015-04-29T06:09:03Z
dc.date.available	2015-04-29T06:09:03Z
dc.date.issued	2013-08-01
dc.identifier.uri	http://hdl.handle.net/123456789/1019
dc.description.abstract	We investigate the dependence of residual rotation measure (RRM) on intervening absorption systems at cosmic distances by using a large sample of 539 Sloan Digital Sky survey quasars in conjunction with the available rotation measure catalogue at around 21 cm wavelength. We found an excess extragalactic contribution in the standard deviation of an observed RRM (σᵣᵣm ) of about 8.11 ± 4.83 rad m⁻² in our sample with an intervening Mg II absorber as compared to the sample without an Mg II absorber. Our results suggest that intervening absorbers could contribute to the enhancement of RRM at around 21 cm wavelength, as was found earlier for rotation measure measurements at around 6 cm wavelength.	en_US
dc.language.iso	en_US	en_US
dc.publisher	Oxford	en_US
dc.relation.ispartofseries	mn;434-3566
dc.subject	Polarization – galaxies: distances and redshifts – intergalactic medium – galaxies: magnetic fields – quasars: absorption lines – quasars: general.	en_US
dc.title	Dependence of residual rotation measure on intervening Mg II absorbers at cosmic distances	en_US
dc.type	Article	en_US