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arXiv · 1108.1368

Constraints on axino warm dark matter from X-ray observation at the Chandra telescope and SPI

Paramita Dey·Biswarup Mukhopadhyaya·Sourov Roy·Sudhir K. Vempati
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Abstract

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.

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Paramita Dey, Biswarup Mukhopadhyaya, Sourov Roy, Sudhir K. Vempati. 2012-05-31. Constraints on axino warm dark matter from X-ray observation at the Chandra telescope and SPI. https://doi.org/10.1088/1475-7516%2F2012%2F05%2F042

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