SciPost Submission Page
Annihilating Dark Matter Search with 12 Years of Fermi LAT Data in Nearby Galaxy Clusters
by C. Thorpe-Morgan, D. Malyshev, C-A. Stegen, A. Santangelo, J. Jochum
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Submission summary
| Authors (as registered SciPost users): | Andrea Santangelo · Charles Thorpe-Morgan |
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| Preprint Link: | scipost_202210_00037v1 (pdf) |
| Date accepted: | April 28, 2023 |
| Date submitted: | Oct. 4, 2022, 11:01 a.m. |
| Submitted by: | Thorpe-Morgan, Charles |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 14th International Conference on Identification of Dark Matter (IDM2022) |
| Ontological classification | |
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| Academic field: | Astronomy |
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Abstract
Galaxy clusters contain an abundance of dark matter making them attractive laboratories for indirect DM searches. This work details a search for signals of pair annihilation from WIMP dark matter in the GeV gamma ray regime in five low z and high galactic latitude galaxy clusters (Centaurus, Coma, Virgo, Perseus and Fornax); undertaken using nearly 12 years of Fermi/LAT data. Through the non-detection of this characteristic signal, we derive constraints on the annihilation cross-section of DM pair annihilation into the b b, W +W − and γγ channels. The limits obtained are of a comparable magnitude to those of recently derived from Fermi/LAT observations of dwarf spheroidal galaxies.
Published as SciPost Phys. Proc. 12, 071 (2023)
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2022-10-22 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202210_00037v1, delivered 2022-10-22, doi: 10.21468/SciPost.Report.5955
Strengths
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The paper tries to derive limits on WIMP-scale DM annihilations, based on gamma-ray observations from galaxy clusters.
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While the derived limits are relatively weak, this is independent, and thus appealing for velocity-dependent annihilations.