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

Journal Article · Tue May 01 00:00:00 EDT 2012 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2012/05/042· OSTI ID:22279991

Dey, Paramita ^[1]; Mukhopadhyaya, Biswarup ^[2]; Roy, Sourov ^[3]

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1. Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen, D-52056 Aachen (Germany)
2. Regional Centre for Accelerator-based Particle Physics, Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad 211019 (India)
3. Department of Theoretical Physics, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mullick Road, Kolkata 700032 (India)

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{sub a}, while the gravitino dark matter remains unconstrained.

• OSTI ID: 22279991
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2012, Issue 05; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
AXIONS
COSMIC X-RAY SOURCES
COSMOLOGY
GRAVITONS
KEV RANGE
LIMITING VALUES
MASS
NONLUMINOUS MATTER
PARITY
PARTICLE DECAY
SUPERSYMMETRY
X RADIATION