Constraints on axino warm dark matter from X-ray observation at the Chandra telescope and SPI
| Autor: | Dey, Paramita, Mukhopadhyaya, Biswarup, Roy, Sourov, Vempati, Sudhir K. |
|---|---|
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | JCAP05(2012)042 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1475-7516/2012/05/042 |
| Popis: | A sufficiently long lived warm dark matter could be a source of X-rays observed by satellite based X-ray telescopes. We consider axinos and gravitinos with masses between 1 keV and 100 keV in supersymmetric models with small R-parity violation. We show that axino dark matter receives significant constraints from X-ray observations of Chandra and SPI, especially for the lower end of the allowed range of the axino decay constant $f_{a}$, while the gravitino dark matter remains unconstrained. Comment: 19 pages, 10 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|