3.55 keV hint for decaying axionlike particle dark matter

Joerg Jaeckel, Javier Redondo, and Andreas Ringwald
Phys. Rev. D 89, 103511 – Published 9 May 2014

Abstract

Recently, indications for an emission line at 3.55 keV have been found in the combined spectra of a large number of galaxy clusters and also in Andromeda. This line could not be identified with any known spectral line. It is tempting to speculate that it has its origin in the decay of a particle contributing all or part of the dark matter. In this paper we want to point out that axionlike particles being all or part of the dark matter are an ideal candidate to produce such a feature. More importantly the parameter values necessary are quite feasible in extensions of the Standard Model based on string theory and could be linked up to a variety of other intriguing phenomena, which also potentially allow for new tests of this speculation.

  • Figure
  • Received 11 March 2014

DOI:https://doi.org/10.1103/PhysRevD.89.103511

© 2014 American Physical Society

Authors & Affiliations

Joerg Jaeckel1, Javier Redondo2,3, and Andreas Ringwald4

  • 1Institut für theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
  • 2Arnold Sommerfeld Center, Ludwig Maximilians Universität, 80333 München, Germany
  • 3Max Planck Institut für Physik, 80805 München, Germany
  • 4Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 89, Iss. 10 — 15 May 2014

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×