LARGE SCALE MAGNETIC FIELDS IN GALAXIES AT HIGH REDSHIFTS

被引：1

作者：

Bernet, M. L. ^{[1
]}

Miniati, F. ^{[1
]}

Lilly, S. J. ^{[1
]}

Kronberg, P. P. ^{[2
]}

Dessauges-Zavadsky, M. ^{[3
]}

机构：

[1] Swiss Fed Inst Technol, Inst Astron, CH-8093 Zurich, Switzerland

[2] Alamos Natl Lab, Box 1663, Los Alamos, NM 87545 USA

[3] Observatoire Geneve, CH-1290 Sauverny, Switzerland

来源：

ROLE OF THE DISK-HALO INTERACTION IN GALAXY EVOLUTION: OUTFLOWS VS INFALL? | 2012年 / 56卷

关键词：

D O I：

10.1051/eas/1256014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a recent study we have used a large sample of extragalactic radio sources to investigate the redshift evolution of the Rotation Measure (RM) of polarized quasars up to z approximate to 3.0. We found that the dispersion in the RM distribution of quasars increases at higher red-shifts and hypothesized that MgII intervening systems were responsible for the observed trend. To test this hypothesis, we have recently obtained high-resolution UVES/VLT spectra for 76 quasars in our sample and in the redshift range 0.6 < z < 2.0. We found a clear correlation between the presence of strong MgII systems and large RMs. This implies that normal galaxies at z approximate to 1 already had large-scale magnetic fields comparable to those seen today.

引用

页码：109 / +

页数：2

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