Supersymmetric dark matter in M31: can one see neutralino annihilation with CELESTE?

Falvard, A.; Giraud, E.; Jachołkowska, A.; Lavalle, Julien; Nuss, E.; Piron, F.; Sapinski, Mariusz; Salati, Pierre; Taillet, R.; Jedamzik, Karsten; Moultaka, G.

doi:10.1016/j.astropartphys.2003.07.001

Cited by 19 publications

(18 citation statements)

References 56 publications

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“…We have searched for line emission in the energy spectrum from the central part of M 31 (r < 1.4 kpc), and compare the results with predictions of the flux of gamma-rays from the annihilation of neutralinos (χ 0 ) in the framework of the minimal supersymmetric standard model (MSSM) using a spatial distribution of the radial density of neutralinos in M 31 in concordance with the measured rotation curve (Braun 1991;Falvard et al 2002).…”

Section: Search For Supersymmetric Dark Matter In M 31mentioning

confidence: 99%

“…Fluxes currently estimated from dark matter annihilation in our own Galactic center -and uncertain by up to two orders of magnitudeare at or below the detection limits, and scale to fluxes below 10 −4 Crab units from the center of M 31. The flux due to neutralino annihilation from M 31 in the CELESTE energy range (>30 GeV) was recently discussed by Falvard et al (2002), who argue in favor of a large dark matter component near the center of M 31, on the basis of rotation curves by Braun (1991). Still, the signal is at best marginally detectable.…”

Section: Introductionmentioning

confidence: 99%

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Search for TeV gamma ray emission from the Andromeda galaxy

Aharonian

Akhperjanian

Beilicke

et al. 2003

A&A

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Abstract. Using the HEGRA system of imaging atmospheric Cherenkov telescopes, the Andromeda galaxy (M 31) was surveyed for TeV gamma ray emission. Given the large field of view of the HEGRA telescopes, three pointings were sufficient to cover all of M 31, including also M 32 and NGC 205. No indications for point sources of TeV gamma rays were found. Upper limits are given at a level of a few percent of the Crab flux. A specific search for monoenergetic gamma-ray lines from annihilation of supersymmetric dark matter particles accumulating near the center of M 31 resulted in flux limits in the 10 −13 cm −2 s −1 range, well above the predicted MSSM flux levels except for models with pronounced dark-matter spikes or strongly enhanced annihilation rates.

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Section: Search For Supersymmetric Dark Matter In M 31mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Search for TeV gamma ray emission from the Andromeda galaxy

Aharonian

Akhperjanian

Beilicke

et al. 2003

A&A

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“…11 Note that a private Suspect/DARKSUSY interface has been already used for prediction studies of indirect LSP detection [98,99].…”

Section: Interface With Other Programsmentioning

confidence: 99%

SuSpect: A Fortran code for the Supersymmetric and Higgs particle spectrum in the MSSM

Djouadi

Kneur

Moultaka

2007

Computer Physics Communications

879

1,016

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We present the Fortran code SuSpect version 2.3, which calculates the Supersymmetric and Higgs particle spectrum in the Minimal Supersymmetric Standard Model (MSSM). The calculation can be performed in constrained models with universal boundary conditions at high scales such as the gravity (mSUGRA), anomaly (AMSB) or gauge (GMSB) mediated supersymmetry breaking models, but also in the nonuniversal MSSM case with R-parity and CP conservation. Care has been taken to treat important features such as the renormalization group evolution of parameters between low and high energy scales, the consistent implementation of radiative electroweak symmetry breaking and the calculation of the physical masses of the Higgs bosons and supersymmetric particles taking into account the dominant radiative corrections. Some checks of important theoretical and experimental features, such as the absence of non desired minima, large fine-tuning in the electroweak symmetry breaking condition, as well as agreement with precision measurements can be performed. The program is simple to use, self-contained and can easily be linked to other codes; it is rather fast and flexible, thus allowing scans of the parameter space with several possible options and choices for model assumptions and approximations.* The program with all relevant information can be downloaded from the web at the http site: www.lpta.univ-montp2.fr/~kneur/Suspect or obtained by sending an E-mail to one of the authors,

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“…This conclusion is confirmed in a second study with a ''wild scan'' mSUGRA simulations. Various aspects such as dependence of the results on heavy quark masses or CP-odd Higgs pole contributions may change the predictions [24]. The most significant signals correspond to the supersymmetric configurations with the neutralino mass m 100 GeV.…”

Section: Discussionmentioning

confidence: 99%

“…(i) clumpiness of the dark matter halo as indicated by N-body simulations [7], (ii) the presence of a supermassive black hole (SBH) with a mass of 2:6 10 6 M creating unstable conditions due to baryon infall by the adiabatic compression process, studied by [22,23] The overall enhancement factor of the expected flux is estimated in [24] to be between 5 and 100, depending on the clumpiness of the galactic halo. The enhancement of the annihilation signal in presence of a spike in the dark matter halo is significant with respect to ordinary dark matter cusp, even in case of gravitational scattering of stars and the self-annihilating dark matter particles, as pointed by [22,25,26].…”

Section: A Dark Matter Halo Parametrizationmentioning

confidence: 99%

Indirect dark matter search with diffuse gamma rays from the Galactic Center with the Alpha Magnetic Spectrometer

et al. 2006

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The detection of nonbaryonic dark matter through its gamma-ray annihilation in the center of our galaxy has been studied. The gamma fluxes according to different models have been simulated and compared to those expected to be observed with the Alpha Magnetic Spectrometer (AMS), during a longterm mission on board of the international space station. Under the assumption that the dark matter is composed of the lightest, stable supersymmetric particle, the neutralino, the results of the simulations in the framework of minimal supergravity models, show that with a cuspy dark matter halo profile or a clumpy halo, the annihilation gamma-ray signal would be detected by AMS. More optimistic perspectives are obtained with the anomaly mediated supersymmetry breaking (AMSB) model. The latter leads also to a cosmologically important 2 Li abundance. Finally, the discovery potential for the massive Kaluza-Klein dark matter candidates has been evaluated and their detection looks feasible.

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Supersymmetric dark matter in M31: can one see neutralino annihilation with CELESTE?

Cited by 19 publications

References 56 publications

Search for TeV gamma ray emission from the Andromeda galaxy

Search for TeV gamma ray emission from the Andromeda galaxy

SuSpect: A Fortran code for the Supersymmetric and Higgs particle spectrum in the MSSM

Indirect dark matter search with diffuse gamma rays from the Galactic Center with the Alpha Magnetic Spectrometer

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