Reconstructing Dark Matter Properties via Gamma-Rays with Fermi-LAT

Nicolas Bernal

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Reconstructing Dark Matter Properties via Gamma-Rays with Fermi-LAT

Nicolas Bernal

High Energy Astrophysical Phenomena · Submitted 1 Dec 2010

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We find that for Dark Matter masses below ~200 GeV and for typical thermal annihilation cross sections, it will be possible to obtain stringent bounds on the Dark Matter properties.

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.46 · human participants 0.01 · controlled comparison 0.12 · randomized assignment 0.01 · states quantitative result 0.93 · compares with prior results 0.12 · mentions code or data availability 0.02.

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arXiv listing abstract v1. Results and the main claim are underlined; show every role.

We study the capabilities of the Fermi-LAT instrument for identifying particle Dark Matter properties as mass, annihilation cross section and annihilation channels, with gamma-ray observations from the Galactic Center. For the potential Dark Matter signal, besides the prompt gamma-ray flux produced in Dark Matter annihilations, we also take into account the flux produced by inverse Compton scattering of the electrons and positrons generated in Dark Matter annihilations off the interstellar photon background. We show that the addition of this contribution is crucial in the case of annihilations into e^+ e^- and mu^+ mu^- pairs. In addition to the diffuse galactic and extragalactic background, we also consider the full catalog of high-energy gamma-ray point sources detected by Fermi. The impact of the degeneracies between the different Dark Matter annihilation channels has been studied. We find that for Dark Matter masses below ~200 GeV and for typical thermal annihilation cross sections, it will be possible to obtain stringent bounds on the Dark Matter properties.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We study the capabilities of the Fermi-LAT instrument for identifying particle Dark Matter properties as mass, annihilation cross section and annihilation channels, with gamma-ray observations from the Galactic Center.	contribution 0.97	0.83	0.05	asserted 0.63
s1	For the potential Dark Matter signal, besides the prompt gamma-ray flux produced in Dark Matter annihilations, we also take into account the flux produced by inverse Compton scattering of the electrons and positrons generated in Dark Matter annihilations off the interstellar photon background.	method 0.92	0.79	0.03	asserted 0.98
s2	We show that the addition of this contribution is crucial in the case of annihilations into e^+ e^- and mu^+ mu^- pairs.	result 0.76	0.79	0.08	asserted 1.00
s3	In addition to the diffuse galactic and extragalactic background, we also consider the full catalog of high-energy gamma-ray point sources detected by Fermi.	method 0.97	0.59	0.02	asserted 0.98
s4	The impact of the degeneracies between the different Dark Matter annihilation channels has been studied.	contribution 0.87	0.80	0.03	asserted 0.78
s5	We find that for Dark Matter masses below ~200 GeV and for typical thermal annihilation cross sections, it will be possible to obtain stringent bounds on the Dark Matter properties.	result 0.99	0.95	0.82	asserted 0.55

What kind of paper the classifier reports this is: simulation study 0.85 · evidence from analysis of existing data 0.83.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

We study the capabilities of the Fermi-LAT instrument for identifying particle Dark Matter properties as mass, annihilation cross section and annihilation channels, with gamma-ray observations from the Galactic Center. For the potential Dark Matter signal, besides the prompt gamma-ray flux produced in Dark Matter annihilations, we also take into account the flux produced by inverse Compton scattering of the electrons and positrons generated in Dark Matter annihilations off the interstellar photon background. We show that the addition of this contribution is crucial in the case of annihilations into e^+ e^- and mu^+ mu^- pairs. In addition to the diffuse galactic and extragalactic background, we also consider the full catalog of high-energy gamma-ray point sources detected by Fermi. The impact of the degeneracies between the different Dark Matter annihilation channels has been studied. We find that for Dark Matter masses below ~200 GeV and for typical thermal annihilation cross sections, it will be possible to obtain stringent bounds on the Dark Matter properties.

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2 arXiv papers cite this in 6 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 3 sentences without a confident label

Cites it as background 1 paper

Indeed, several approaches have been proposed to determine DM particle properties by using future indirect WIMP DM-induced signals of gamma-rays or neutrinos, direct detection searches, collider information or their combination [ref] .

Constraining the Milky Way Dark Matter Density Profile with Gamma-Rays with Fermi-LAT · Conclusions · 0.87

What it cites · 5 sentences without a confident label

Uses the method or tool of 2 papers

We determine the propagated spectrum by solving the diffusion-loss equation that describes the evolution of the energy distribution for electrons and positrons assuming steady state [ref] .

Positron Propagation and Fluxes from Neutralino Annihilation in the Halo · Introduction · 0.99
There are three main components contributing to the high-energy gamma-ray background: the diffuse galactic emission has been estimated by taking the conventional model of the GALPROP code [ref] .

Propagation of cosmic-ray nucleons in the Galaxy · Introduction · 0.89

Uses data or values from 2 papers

Finally, for the isotropic extragalactic gamma-ray background we used the recent measurements by the Fermi–LAT collaboration [ref] .

The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data · Introduction · 1.00
We consider all the point sources detected by the first 11 months of Fermi–LAT [ref] lying in the region of interest.

Fermi Large Area Telescope First Source Catalog · Introduction · 0.99

Cites as background 2 papers

Once gamma-rays are identified as having been produced in DM annihilations, the next step concerns the possibilities of constraining DM properties [ref] .

Extracting the Gamma Ray Signal from Dark Matter Annihilation in the Galactic Center Region · Reconstructing Dark Matter properties · 0.90
Again, the dependence on the propagation model has been studied in reference [ref] .

Constraining Dark Matter Properties with Gamma-Rays from the Galactic Center with Fermi-LAT · Introduction · 0.82

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