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A two-component dark matter model with real singlet scalars confronting GeV γ-ray excess from galactic centre and Fermi bubble

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Abstract

We propose a two-component dark matter (DM) model, each component of which is a real singlet scalar, to explain results from both direct and indirect detection experiments. We put the constraints on the model parameters from theoretical bounds, PLANCK relic density results and direct DM experiments. The γ-ray flux is computed from DM annihilation in this framework and is then compared with the Fermi-LAT observations from galactic centre region and Fermi bubble.

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Authors and Affiliations

  1. Astroparticle Physics and Cosmology Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700 064, India

    DEBASISH MAJUMDAR & KAMAKSHYA PRASAD MODAK

  2. Discipline of Physics, Indian Institute of Technology Indore, IET-DAVV Campus, Indore, 452 017, India

    SUBHENDU RAKSHIT

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  1. DEBASISH MAJUMDAR
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  2. KAMAKSHYA PRASAD MODAK
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  3. SUBHENDU RAKSHIT
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Correspondence to DEBASISH MAJUMDAR.

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MAJUMDAR, D., MODAK, K.P. & RAKSHIT, S. A two-component dark matter model with real singlet scalars confronting GeV γ-ray excess from galactic centre and Fermi bubble. Pramana - J Phys 86, 343–351 (2016). https://doi.org/10.1007/s12043-015-1154-x

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