Built on

I. Gebauer, “Dark Matter Annihilation in the light of EGRET, HEAT, WMAP, INTEGRAL and ROSAT,” arXiv:0811.2767 [astro-ph]. N. Prantzos, “On the intensity and spatial morphology of the 511 keV emission in the Milky Way,” Astron. Astrophys. 449
Original
1912
Earlier work this paper cites.
J. March-Russell, C. McCabe and M. McCullough, “Inelastic Dark Matter, Non-Standard Halos and the DAMA/LIBRA Results,” JHEP 0905
Original
1931
Earlier work this paper cites.
W. H. Press, B. P. Flannery, S. A. Teukolsky and W. T. Vetterling, “Numerical Recipes in FORTRAN 77: The Art of Scientific Computing,” Second Edition, Cambridge University Press (1992)
1992
Earlier work this paper cites.
L.N. Hand and J.D. Finch, “Analytical Mechanics” Cambridge University Press (1998)
1998
Earlier work this paper cites.
C. Boehm, T. A. Ensslin and J. Silk, “Are light annihilating dark matter particles possible?,” J. Phys. G 30
2004
Earlier work this paper cites.
J. Knödlseder et al
2005
Earlier work this paper cites.
F. Ferrer and T. Vachaspati, “511-keV photons from superconducting cosmic strings,” Phys. Rev. Lett. 95
2005
Earlier work this paper cites.
W. Wang, C. S. J. Pun and K. S. Cheng, “Could electron-positron annihilation lines in the Galactic center result from pulsar winds?,” Astron. Astrophys. 446
2006
Earlier work this paper cites.
M. Casse, B. Cordier, J. Paul and S. Schanne, “Hypernovae/GRB in the Galactic Center as possible sources of Galactic Positrons,” Astrophys. J. 602
2006
Earlier work this paper cites.
K. S. Cheng, D. O. Chernyshov and V. A. Dogiel, “Annihilation Emission from the Galactic Black Hole,” Astrophys. J. 645
2006
Earlier work this paper cites.
D. Hooper and L. T. Wang, “Evidence for axino dark matter in the galactic bulge,” Phys. Rev. D 70
2006
Earlier work this paper cites.
G. Battaglia et al
2006
Earlier work this paper cites.

Similar

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Then

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2009

Exciting dark matter in the galactic center

Chen, Fang, Cline, James M., Fradette, Anthony et al.

Understand

We reconsider the proposal of excited dark matter (DM) as an explanation for excess 511 keV gamma rays from positrons in the galactic center.

We quantitatively compute the cross section for DM annihilation to nearby excited states, mediated by exchange of a new light gauge boson with off-diagonal couplings to the DM states.
In models where both excited states must be heavy enough to decay into e^+ e^- and the ground state, the predicted rate of positron production is never large enough to agree with observations, unless one makes extreme assumptions about the local circular velocity in the Milky Way, or alternatively if there exists a metastable population of DM states which can be excited through a mass gap of less than 650 keV, before decaying into electrons and positrons.

Built on

I. Gebauer, “Dark Matter Annihilation in the light of EGRET, HEAT, WMAP, INTEGRAL and ROSAT,” arXiv:0811.2767 [astro-ph]. N. Prantzos, “On the intensity and spatial morphology of the 511 keV emission in the Milky Way,” Astron. Astrophys. 449
Original
1912
Earlier work this paper cites.
J. March-Russell, C. McCabe and M. McCullough, “Inelastic Dark Matter, Non-Standard Halos and the DAMA/LIBRA Results,” JHEP 0905
Original
1931
Earlier work this paper cites.
W. H. Press, B. P. Flannery, S. A. Teukolsky and W. T. Vetterling, “Numerical Recipes in FORTRAN 77: The Art of Scientific Computing,” Second Edition, Cambridge University Press (1992)
1992
Earlier work this paper cites.
L.N. Hand and J.D. Finch, “Analytical Mechanics” Cambridge University Press (1998)
1998
Earlier work this paper cites.
C. Boehm, T. A. Ensslin and J. Silk, “Are light annihilating dark matter particles possible?,” J. Phys. G 30
2004
Earlier work this paper cites.
J. Knödlseder et al
2005
Earlier work this paper cites.
F. Ferrer and T. Vachaspati, “511-keV photons from superconducting cosmic strings,” Phys. Rev. Lett. 95
2005
Earlier work this paper cites.
W. Wang, C. S. J. Pun and K. S. Cheng, “Could electron-positron annihilation lines in the Galactic center result from pulsar winds?,” Astron. Astrophys. 446
2006
Earlier work this paper cites.
M. Casse, B. Cordier, J. Paul and S. Schanne, “Hypernovae/GRB in the Galactic Center as possible sources of Galactic Positrons,” Astrophys. J. 602
2006
Earlier work this paper cites.
K. S. Cheng, D. O. Chernyshov and V. A. Dogiel, “Annihilation Emission from the Galactic Black Hole,” Astrophys. J. 645
2006
Earlier work this paper cites.
D. Hooper and L. T. Wang, “Evidence for axino dark matter in the galactic bulge,” Phys. Rev. D 70
2006
Earlier work this paper cites.
G. Battaglia et al
2006
Earlier work this paper cites.