4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

A Multi-frequency analysis of dark matter annihilation interpretations of recent anti-particle and gamma-ray excesses in cosmic structures.

5 Jul 2016, 10:00
20m
5A (Kramer Law building)

5A

Kramer Law building

UCT Middle Campus Cape Town
Oral Presentation Track D1 - Astrophysics Astrophysics (1)

Speaker

Mr Geoff Beck (University of Witwatersrand)

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Main supervisor (name and email)<br>and his / her institution

Prof Sergio Colafrancesco, sergio.colafrancesco@wits.ac.za, University of the Witwatersrand

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Annihilation of the supersymmetric neutralino dark matter has consequences across the frequency spectrum, from radio to gamma-rays. Using the sensitivity projections for the Square Kilometre Array (SKA), Cherenkov Telescope Array (CTA) and ASTRO-H Satellite, we determine the detection prospects for neutralino models compatible with FERMI observations of the galactic centre as well as those consistent with the AMS-2/Pamela anti-proton excess. We also examine the consequences of recent gamma-ray excesses observed in the Reticulum 2 dwarf galaxy which throw a dark matter interpretation of the excess into doubt. We demonstrate that both the SKA and ASTRO-H have great potential to probe the radio/X-ray emissions from neutralino annihilation, identifying spectral characteristics containing information about the neutralino mass and annihilation channel. Thus, multi-frequency observation with the next generation of experiments will allow for unprecedented sensitivity to the neutralino parameter space as well as offsetting the individual weaknesses of each observation mode.

Primary authors

Mr Geoff Beck (University of Witwatersrand) Prof. Sergio Colafrancesco (University of the Witwatersrand)

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