| タイトル | Rate for annihilation of galactic dark matter into two photons |
| 本文（外部サイト） | http://hdl.handle.net/2060/19890017421 |
| 著者（英） | Griest, Kim; Giudice, Gian F. |
| 著者所属（英） | Chicago Univ.|Fermi National Accelerator Lab. |
| 発行日 | 1989-04-01 |
| 言語 | eng |
| 内容記述 | A calculation of the cross section for neutralino-neutralino annihilation into two photons is performed and applied to dark matter in the galactic halo to find the counting rate in a large gamma ray detector such as EGRET (Energetic Gamma Ray Experiment Telescope) or ASTROGAM. Combining constraints from particle accelerators with the requirement that the neutralinos make up the dark matter, it is found that rates of over a few dozen events per year are unlikely. The assumptions that go into these conclusions are listed. Other particle dark matter candidates which could give larger and perhaps observable signals are suggested. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 89N26792
FERMILAB-PUB-89/113-A
NASA-CR-185029
NAS 1.26:185029 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/141042 |
