Header

UZH-Logo

Maintenance Infos

CMB as a possible new tool to study the dark baryons in galaxies


De Paolis, F; Ingrosso, G; Nucita, A A; Vetrugno, D; Gurzadyan, V G; Kashin, A L; Khachatryan, H G; Mirzoyan, S; Jetzer, P; Qadir, A (2012). CMB as a possible new tool to study the dark baryons in galaxies. Journal of Physics : Conference Series, 354(1):012004.

Abstract

Baryons constitute about 4% of our universe, but most of them are missing and we do not know where and in what form they are hidden. This constitute the so-called missing baryon problem. A possibility is that part of these baryons are hidden in galactic halos. We show how the 7-year data obtained by the WMAP satellite may be used to trace the halo of the nearby giant spiral galaxy M31. We detect a temperature asymmetry in the M31 halo along the rotation direction up to about 120 kpc. This could be the first detection of a galactic halo in microwaves and may open a new way to probe hidden baryons in these relatively less studied galactic objects using high accuracy CMB measurements.

Abstract

Baryons constitute about 4% of our universe, but most of them are missing and we do not know where and in what form they are hidden. This constitute the so-called missing baryon problem. A possibility is that part of these baryons are hidden in galactic halos. We show how the 7-year data obtained by the WMAP satellite may be used to trace the halo of the nearby giant spiral galaxy M31. We detect a temperature asymmetry in the M31 halo along the rotation direction up to about 120 kpc. This could be the first detection of a galactic halo in microwaves and may open a new way to probe hidden baryons in these relatively less studied galactic objects using high accuracy CMB measurements.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

68 downloads since deposited on 22 Jan 2013
19 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, not_refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:March 2012
Deposited On:22 Jan 2013 07:35
Last Modified:17 Feb 2018 00:39
Publisher:IOP Publishing
ISSN:1742-6588
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1088/1742-6596/354/1/012004

Download

Download PDF  'CMB as a possible new tool to study the dark baryons in galaxies'.
Preview
Content: Published Version
Filetype: PDF
Size: 404kB
View at publisher