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SciPost Physics Submission 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

Submission summary

Authors (as Contributors): Charles Thorpe-Morgan
Submission information
Preprint link: scipost_202210_00037v1
Date submitted: 2022-10-04 11:01
Submitted by: Thorpe-Morgan, Charles
Submitted to: SciPost Physics Proceedings
Proceedings issue: 14th International Conference on Identification of Dark Matter
Ontological classification
Academic field: Astronomy
Specialties:
  • High Energy Astrophysical Phenomena

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.

Current status:
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Submission & Refereeing History

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Submission scipost_202210_00037v1 on 4 October 2022

Reports on this Submission

Anonymous Report 1 on 2022-10-22 (Invited Report)

Strengths

1. The paper tries to derive limits on WIMP-scale DM annihilations, based on gamma-ray observations from galaxy clusters.

2. While the derived limits are relatively weak, this is independent, and thus appealing for velocity-dependent annihilations.

Weaknesses

There are typos, such as "In addition to to", "the best strongest limits", and "we also adopt a ... and followed ...", that need to be corrected in later editing.

Report

The submission is clearly written to demonstrate the method, as well as the results. It does meet the criteria of SciPost Physics Proceedings, and should be accepted for publication.

  • validity: high
  • significance: high
  • originality: high
  • clarity: top
  • formatting: excellent
  • grammar: good

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