Diffuse $γ$-rays and $\bar{p}$ flux from dark matter annihilation -- a model for consistent results with EGRET and cosmic ray data
| dc.creator | Bi, Xiao-Jun | |
| dc.creator | Zhang, Juan | |
| dc.creator | Yuan, Qiang | |
| dc.date | 2007-12-25 | |
| dc.date | 2008-10-01 | |
| dc.date.accessioned | 2026-07-07T11:54:50Z | |
| dc.date.available | 2026-07-07T11:54:50Z | |
| dc.description | In this work we develop a new propagation model for the Galactic cosmic rays based on the GALPROP code, including contributions from dark matter annihilation. The model predicts compatible Galactic diffuse $γ$ ray spectra with EGRET data in all sky regions. It also gives consistent results of the diffuse $γ$ ray longitude and latitude distributions. Further the results for B/C, $^{10}$Be/$^9$Be, proton, electron and antiproton spectra are also consistent with cosmic ray measurements. In the model we have taken a universal proton spectrum throughout the Galaxy without introducing large fluctuation for the proton energy loss is negligible. The dark matter annihilation signals are `boosted' after taking the contribution from subhalos into account. Another interesting feature of the model is that it gives better description of the diffuse $γ$ rays when taking the source distribution compatible with supernova remnants data, which is different from previous studies. | |
| dc.description | 29 pages, 13 figures; the published version | |
| dc.identifier | https://arxiv.org/abs/0712.4038 | |
| dc.identifier | http://arxiv.org/abs/0712.4038 | |
| dc.identifier | Phys.Rev.D78:043001,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.043001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205047 | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Diffuse $γ$-rays and $\bar{p}$ flux from dark matter annihilation -- a model for consistent results with EGRET and cosmic ray data | |
| dc.type | text |