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

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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Official URL: http://dx.doi.org/10.1088/1475-7516/2012/05/042

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 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
URI: http://eprints.iisc.ernet.in/id/eprint/44868

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