BTZ entropy from topological M-theory

Chagoya, Javier; Reyes-Ahumada, Graciela; Sabido, M.

doi:10.1103/physrevd.103.084009

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…Indirect searches for DM have long been mainly directed towards our own galactic centre (see [1,2] and references therein) and an array of Milky-Way satellite galaxies (see e.g. [3,4]).…”

Section: Introductionmentioning

confidence: 99%

Multi-frequency probes of 2HDM+S dark matter

Beck

2023

Proceedings of High Energy Astrophysics in Southern Africa 2022 — PoS(HEASA2022)

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The two-Higgs-doublet with additional scalar (2HDM+𝑆) model is one proposed to account for several anomalies that have persisted and increased in significance over runs 1 and 2 at the Large Hadron Collider (LHC). In addition to this, 2HDM+𝑆 also supplies a potential Dark Matter (DM) candidate coupling to the Standard Model via the 𝑆 boson. So far, this model has been difficult to constrain by indirect means. Here we will explore the potential of Omega Centauri, a nearby globular cluster to constrain this interesting DM model. Although such structures are generally considered to be lacking in DM, arguments have been made that this cluster is in fact the relic of a tidally stripped dwarf galaxy. In such a scenario, the DM content would be significant. Combined with its nearness, this would suggest a potential for powerful indirect DM signals. We employ both Fermi-LAT gamma-ray data, as well as MeerKAT telescope sensitivities to determine the current status of Omega Centauri as a source of indirect constraints on Weakly Interacting Massive Particles (WIMPs) in a 2HDM+𝑆 scenario and for general annihilation channels.

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“…Indirect searches for DM have long been mainly directed towards our own galactic centre (see [1,2] and references therein) and an array of Milky-Way satellite galaxies (see e.g. [3,4]).…”

Section: Introductionmentioning

confidence: 99%

Multi-frequency probes of 2HDM+S dark matter

Beck

2023

Proceedings of High Energy Astrophysics in Southern Africa 2022 — PoS(HEASA2022)

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“…Indirect searches for Dark Matter (DM) have long favoured gamma-ray frequencies, for various reasons including lower backgrounds leading to more unambiguous signals. Many of these searches have been focussed on either our own Galactic Centre or local dwarf satellite galaxies [1][2][3][4][5][6]. These approaches still leave a large swathe of viable WIMP parameter space.…”

Section: Introductionmentioning

confidence: 99%

Multi-frequency dark matter searches in Omega Centauri

Beck¹

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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Dark matter remains one of the most pressing gaps in our modern picture of physics. So far, gamma-ray results from Fermi-LAT have ruled out WIMPs, annihilating into 𝑏 quarks, with masses below 100 GeV as a dark matter candidate. In this paper we examine the potential of the globular cluster Omega Centauri as a target for indirect detection with Fermi-LAT data as well as CTA, HESS, and MeerKAT sensitivity projections. Globular clusters are usually considered largely devoid of dark matter. However, considerable evidence suggests Omega Centauri may be the relic of satellite dwarf galaxy. Using the latest modelling of its dark matter halo we demonstrate that Omega Centauri has the potential to greatly exceed dwarf spheroidal galaxies in its ability to place limits on dark matter models, due both to its proximity to Earth and suggestions of a dense dark matter core. In particular, limits from the three considered frequency bands are able to rule out 𝑏 quark annihilation in the thermal relic scenario for masses up to 10 TeV in an optimistic case.

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BTZ entropy from topological M-theory

Cited by 2 publications

References 14 publications

Multi-frequency probes of 2HDM+S dark matter

Multi-frequency probes of 2HDM+S dark matter

Multi-frequency dark matter searches in Omega Centauri

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