X-ray annual modulation observed by XMM-Newton and Axion Quark Nugget Dark Matter

Abstract

The XMM-Newton observatory shows evidence, with a 11$\sigma$ confidence level, for seasonal variation of the X-ray background in the near-Earth environment in the 2-6 keV energy range (Fraser et al. 2014). The authors argue that the observed seasonal variation suggests a possible link with dark matter. We propose an explanation which involves the Axion Quark Nugget (AQN) dark matter model. In our proposal, AQNs can cross the Earth and emit high energy photons at their exit. We show that the emitted spectrum is consistent with (Fraser et al. 2014), and that our calculation is not sensitive to the specific details of the model. Our proposal predicts a large seasonal variation, on the level of 20-25%, much larger than conventional dark matter models (1-10%). Since the AQN emission spectrum extends up to $\sim$ 100 keV, well beyond the keV sensitivity of XMM-Newton, we predict the AQN contribution to the hard X-ray and $\gamma$-ray backgrounds in the Earth's environment. The Gamma-Ray Burst Monitor (GBM) instrument, aboard the FERMI telescope, is sensitive to the 8 keV-40 MeV energy band. The NuSTAR (Nuclear Spectroscopic Telescope Array) is a NASA space based X ray telescope which operates in the range 3 to 79 keV is also sensitive to higher energy bands. We suggest that the multi-year archival data from the GBM or NuSTAR could be used to search for a seasonal variation in the near-Earth environment up to 100 keV as a future test of the AQN framework.

arXiv comment38 pages, 12 figures, Accepted version in Physics of the Dark Universe

References in corpus (28)

• The Fermi Gamma-Ray Burst Monitor
• Color superconductivity in dense quark matter
• Final model independent result of DAMA/LIBRA-phase1
• X-ray background measurements with XMM-Newton EPIC
• Annual Modulation of Dark Matter: A Review
• "Nonbaryonic" Dark Matter as Baryonic Color Superconductor
• WMAP Haze: Directly Observing Dark Matter?
• 511 KeV Photons From Color Superconducting Dark Matter
• Axion field and the quark nugget's formation at the QCD phase transition
• The Axion Quark Nugget Dark Matter Model: Size Distribution and Survival Pattern
• No role for neutrons, muons and solar neutrinos in the DAMA annual modulation results
• Observational evidence for gravitationally trapped massive axion(-like) particles
• Cosmological Axion and Quark Nugget Dark Matter Model
• Solar Corona Heating by the Axion Quark Nugget Dark Matter
• The 21cm Absorption Line and Axion Quark Nugget Dark Matter Model
• Axion Quark Nuggets. Dark Matter and Matter-Antimatter asymmetry: theory, observations and future experiments
• Width of the 511 KeV Line from the Bulge of the Galaxy
• Primordial Lithium Puzzle and the Axion Quark Nugget Dark Matter Model
• Cosmological CP odd axion field as the coherent Berry's phase of the Universe
• Solar Extreme UV radiation and quark nugget dark matter model
• Detecting solar axions using Earth's magnetic field
• Gravitationally trapped axions on Earth
• Infrasonic, acoustic and seismic waves produced by the Axion Quark Nuggets
• The mysterious diffuse UV radiation and Axion Quark Nugget dark matter model
• DAMA/LIBRA annual modulation and Axion Quark Nugget Dark Matter Model
• The Mysterious Bursts observed by Telescope Array and Axion Quark Nuggets
• Feasibility Study for Measuring Geomagnetic Conversion of Solar Axions to X-rays in Low Earth Orbits
• No axions from the Sun

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• Thermal and annihilation radiation in the quark nugget model of dark matter
• The Glow of Axion Quark Nugget Dark Matter: (I) Large Scale Structures
• Possibility of antiquark nuggets detection using meteor searching radars
• Constraining Light Scalar Field with Torsion-Balance Gravity Experiments