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pro vyhledávání: '"Vollmann, Martin"'
So far no diffuse emissions in dwarf spheroidal satellites of the Milky Way have ever been observed. Given that dwarf galaxies are predominantly composed of Dark Matter, the discovery of these signals could offer valuable insights into understanding
Externí odkaz:
http://arxiv.org/abs/2401.05255
Autor:
Jäger, Barbara, Vollmann, Martin
We present a calculation of the continuum part of the gamma-ray spectra resulting from Dark Matter annihilation in the framework of the MSSM taking into account Sommerfeld effects. Concentrating on pure wino and pure higgsino scenarios we compare our
Externí odkaz:
http://arxiv.org/abs/2310.11067
For the minimal wino and Higgsino benchmark models we provide accurate energy spectra of high-energy photons from TeV scale dark-matter annihilation $\chi\chi\to \gamma+X$ by merging electroweak Sudakov resummation near maximal energy with the electr
Externí odkaz:
http://arxiv.org/abs/2203.01692
Publikováno v:
In Journal of Economic Behavior and Organization April 2024 220:354-368
Autor:
Vollmann, Martin
Publikováno v:
JCAP04(2021)068
The phenomenology of diffuse radio emission from Dark Matter annihilation or decay in dwarf spheroidal galaxies is examined. We introduce (in the context of cosmic-ray physics) a novel strategy for the computation of the relevant synchrotron signals.
Externí odkaz:
http://arxiv.org/abs/2011.11947
The impact of electroweak Sudakov logarithms on the endpoint of the photon spectrum for wino dark matter annihilation was studied intensively over the last several years. In this work, we extend these results to Higgsino dark matter $\chi_1^0$. We ac
Externí odkaz:
http://arxiv.org/abs/1912.02034
Autor:
Vollmann, Martin, Heesen, Volker, Shimwell, Timothy, Hardcastle, Martin J., Brüggen, Marcus, Sigl, Günter, Röttgering, Huub
Dwarf galaxies are dark matter-dominated and therefore promising targets for the search for weakly interacting massive particles (WIMPs), which are well-known candidates for dark matter. Annihilation of WIMPs produce ultra-relativistic cosmic-ray ele
Externí odkaz:
http://arxiv.org/abs/1909.12355
Akademický článek
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Publikováno v:
Phys. Rev. D 95, 035018 (2017)
We revisit the possibility of a Dirac fermion dark matter candidate in the light of current $b \to s \ell^+ \ell^-$ anomalies by investigating a minimal extension of the Standard Model with a horizontal $\mathrm{U(1)}^{\prime}$ local symmetry. Dark m
Externí odkaz:
http://arxiv.org/abs/1608.03894
Publikováno v:
JCAP 11 (2016) 021
One of the key predictions of the WIMP paradigm for Dark Matter (DM) is that DM particles can annihilate into charged particles. These annihilations will proceed in e.g. Galactic subhalos such as dwarf Galaxies or, as recently pointed out, high veloc
Externí odkaz:
http://arxiv.org/abs/1606.03515