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Does antiproton data exclude interpretation of EGRET data?Bergstrom et al. astro-ph/0603632, Abstract:we investigate the viability of the model using the DarkSUSYpackage to compute the gamma-ray and antiproton fluxes. We areable to show that their (=WdB et al) model is excluded by a widemargin from the measured flux of antiprotons.Problem with DarkSUSY (DS):1) Flux of antiprotons/gamma in DarkSUSY: O(1) from DMA.However, O(10 -2 ) from LEP dataReason: DS has diffusion box with isotropic diffusion ->DMA fills up box with high density of antiprotons2) More realistic models have anisotropic diffusion.E.g. spiral galaxies have magnetic fields perpendicular todisk-> antiprotons may spiral quickly out of Galaxy.In addition: convection of particles by CR pressure.Wim de Boer, Karlsruhe Seminar Oxford, May. 3, 2007 22
Magnetic fields observed in spiral galaxiesfieldlinediskA few uG perpendicular to disc:Strong convection ⊥ to disc?A few µG along spiral arms:Can lead to slow radial diffusionIsotropic diffusion assumes randomly oriented magnetic turbulences.Preferred magnetic field directions -> anisotropic diffusionWim de Boer, Karlsruhe Seminar Oxford, May. 3, 2007 23
Page 1 and 2: The dark connection between Canis M
Page 3 and 4: Thermal History of WIMPsThermal equ
Page 5 and 6: Example of DM annihilation (SUSY)χ
Page 7 and 8: EGRET on CGRO (Compton Gamma Ray Ob
Page 9 and 10: What about background shape?No SMNo
Page 11 and 12: Basic principle for indirect dark m
Page 13 and 14: Analysis of EGRET data in 6 sky dir
Page 15 and 16: Background scaling factors agree wi
Page 17 and 18: N-body simulations show: Progenitor
Page 19 and 20: Excess of DM from Canis Major +tida
Page 21: Inner Ring coincides with ring of d
Page 25 and 26: What about supersymmetry?Present da
Page 27 and 28: Expected SUSY mass spectra in mSUGR
Page 29 and 30: Direct Detection of WIMPsWIMPs elas
Page 31 and 32: DM annihilation in Sun and EarthSUN
Page 33: Summary on WIMP searchesIndirect de

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