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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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
Publication:	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Publisher:	IOP PUBLISHING LTD
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.ac.in/id/eprint/44868

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