UZH-Logo

Maintenance Infos

Fermi-LAT Sensitivity to Dark Matter Annihilation in Via Lactea II Substructure


Anderson, B; Kuhlen, M; Diemand, J; Johnson, R P; Madau, P (2010). Fermi-LAT Sensitivity to Dark Matter Annihilation in Via Lactea II Substructure. Astrophysical Journal, 718(2):899-904.

Abstract

We present a study of the ability of the Fermi Gamma-ray Space Telescope to detect dark matter (DM) annihilation signals from the Galactic subhalos predicted by the Via Lactea II N-body simulation. We implement an improved formalism for estimating the boost factor needed to account for the effect of DM clumping on scales below the resolution of the simulation, and we incorporate a detailed Monte Carlo simulation of the response of the Fermi-LAT, including a simulation of its all-sky observing mode integrated over a 10 year mission. We find that for WIMP masses up to about 150 GeV c -2 in standard supersymmetric models with langσvrang = 3 × 10-26 cm3 s-1, a few subhalos could be detectable with >5 standard deviation significance and would likely deviate significantly from the appearance of a point source.

We present a study of the ability of the Fermi Gamma-ray Space Telescope to detect dark matter (DM) annihilation signals from the Galactic subhalos predicted by the Via Lactea II N-body simulation. We implement an improved formalism for estimating the boost factor needed to account for the effect of DM clumping on scales below the resolution of the simulation, and we incorporate a detailed Monte Carlo simulation of the response of the Fermi-LAT, including a simulation of its all-sky observing mode integrated over a 10 year mission. We find that for WIMP masses up to about 150 GeV c -2 in standard supersymmetric models with langσvrang = 3 × 10-26 cm3 s-1, a few subhalos could be detectable with >5 standard deviation significance and would likely deviate significantly from the appearance of a point source.

Citations

19 citations in Web of Science®
18 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

37 downloads since deposited on 01 Mar 2011
8 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:August 2010
Deposited On:01 Mar 2011 13:45
Last Modified:05 Apr 2016 14:33
Publisher:Institute of Physics Publishing
ISSN:0004-637X
Publisher DOI:10.1088/0004-637X/718/2/899
Related URLs:http://arxiv.org/abs/1006.1628
Permanent URL: http://doi.org/10.5167/uzh-41660

Download

[img]
Preview
Content: Accepted Version
Filetype: PDF
Size: 1MB
View at publisher

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations