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Asymmetric WIMP Dark Matter in the presence of DM/anti-DM Oscillations
Gabrijela Zaharijas, 2012, published scientific conference contribution abstract

Abstract: The class of ‘Asymmetric Dark Matter’ scenarios relies on the existence of a primordial particle/anti-particle asymmetry in the dark sector related to the baryon asymmetry as a way to address the observed similarity between the baryonic and dark matter energy densities today. Focusing on this framework we calculate the evolution of the dark matter relic abundance in the presence of particle/anti-particle oscillations. We show how oscillations reopen the parameter space of asymmetric dark matter models, in particular in the direction of allowing large (WIMP-scale) DM masses. Finally, we constrain the parameter space in this framework by applying up-to-date bounds from indirect detection signals on annihilating DM.
Found in: osebi
Keywords: dark matter, early universe
Published: 23.03.2016; Views: 3032; Downloads: 0
.pdf Fulltext (431,48 KB)

Constraints on the Galactic Dark Matter signal from the Fermi-LAT measurement of the diffuse gamma-ray emission
Gabrijela Zaharijas, 2012, published scientific conference contribution

Abstract: We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi Large Area Telescope with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal, constraints are presented. We set both, conservative dark matter limits requiring that the dark matter signal does not exceed the observed diffuse gamma-ray emission and limits derived based on modeling the foreground astrophysical diffuse emission. Uncertainties in several parameters which characterize conventional astrophysical emission are taken into account using a profile likelihood formalism. The resulting limits impact the range of particle masses over which dark matter thermal production in the early Universe is possible, and challenge the interpretation of the PAMELA/Fermi-LAT cosmic ray anomalies as annihilation of dark matter.
Found in: osebi
Keywords: gamma rays, Galactic diffuse emission, dark matter serach
Published: 03.05.2016; Views: 2973; Downloads: 0
.pdf Fulltext (1,42 MB)

Second Fermi-LAT Catalog of High-Energy Sources (2FHL)
Collaboration Fermi LAT, Gabrijela Zaharijas, 2015, complete scientific database or corpus

Found in: osebi
Keywords: gamma-ray point sources, catalogs
Published: 06.05.2016; Views: 3245; Downloads: 0
.pdf Fulltext (2,26 MB)

Extragalactic gamma-ray signal from dark matter annihilation
Gabrijela Zaharijas, E. Sefusatti, Pasquale D. Serpico, D. Theurel, M. Gustafsson, 2014, original scientific article

Found in: osebi
Keywords: cosmology, dark matter, diffuse background, gamma-rays
Published: 09.05.2017; Views: 2870; Downloads: 100
URL Fulltext (0,00 KB)

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