Dey, Paramita and Mukhopadhyaya, Biswarup and Roy, Sourov and Vempati, Sudhir K (2012) Constraints on axino warm dark matter from X-ray observation at the Chandra telescope and SPI. In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (5).
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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 sin all 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.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to the IOP PUBLISHING LTD|
|Keywords:||dark matter theory; dark matter detectors; dark matter experiments; X-ray telescopes|
|Department/Centre:||Division of Physical & Mathematical Sciences > Centre for High Energy Physics|
|Date Deposited:||25 Jul 2012 10:16|
|Last Modified:||25 Jul 2012 10:16|
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