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Título
Gamma rays from dark mediators in white dwarfs
Autor(es)
Materia
Dark matter
Photons
Astrophysical measurements
M4
Gamma rays
White dwarfs
Clasificación UNESCO
22 Física
Fecha de publicación
2018
Editor
American Physical Society
Citación
Cermeno, M., & Pérez-García, M. A. (2018). Gamma rays from dark mediators in white dwarfs. Physical Review D, 98(6), 063002. https://doi.org/10.1103/PhysRevD.98.063002
Resumen
[EN]We consider self-annihilation of dark matter, χ, into metastable mediators, Y, and their subsequent decay into photons inside white dwarfs. We focus on reactions of the type χχ→YY, where mediators, besides having a finite decay lifetime at rest τrest1 s, may suffer energy loss in the medium before they decay into photons, Y→γγ. We obtain attenuated gamma-ray luminosities arising from the combination of both effects. Using complementary sets of astrophysical measurements from cold white dwarfs in the M4 globular cluster as well as direct and indirect dark matter searches, we discuss further constraints on dark mediator lifetimes.
URI
ISSN
2470-0010
DOI
10.1103/PhysRevD.98.063002
Versión del editor
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