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Galactic bulge preferred over dark matter for the Galactic centre gamma-ray excess

Macias, Oscar; Gordon, Chris; Crocker, Roland; Coleman, Brendan; Paterson, Dylon; Horiuchi, Shunsaku; Pohl, Martin

Description

An anomalous gamma-ray excess emission has been found in the Fermi Large Area Telescope data 1 covering the centre of the Galaxy 2,3 . Several theories have been proposed for this 'Galactic centre excess'. They include self-annihilation of dark-matter particles 4, an unresolved population of millisecond pulsars 5, an unresolved population of young pulsars 6, or a series of burst events 7 . Here, we report on an analysis that exploits hydrodynamical modelling to register the position of...[Show more]

CollectionsANU Research Publications
Date published: 2018-03-12
Type: Journal article
URI: http://hdl.handle.net/1885/205971
Source: Nature Astronomy
DOI: 10.1038/s41550-018-0414-3
Access Rights: Open Access

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