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Abstract <p>One of the common explanations of positron anomaly in cosmic rays involves decaying or annihilating dark matter particles with extended spatial distribution. The main downside of such models lies in overproduction of gamma radiation leading to contradiction to cosmic gamma-ray background data. This work continues consideration of the possibility of gamma suppression due to assumption of special spatial distribution of dark matter giving numerical estimate of the effect of simple arm-like annihilating DM distribution.</p>

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Dark Matter with Special Spatial Distribution as Possible Explanation of Positron Excess in Cosmic Rays

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • K. M. Belotsky,
  • M. L. Solovev

摘要

Abstract

One of the common explanations of positron anomaly in cosmic rays involves decaying or annihilating dark matter particles with extended spatial distribution. The main downside of such models lies in overproduction of gamma radiation leading to contradiction to cosmic gamma-ray background data. This work continues consideration of the possibility of gamma suppression due to assumption of special spatial distribution of dark matter giving numerical estimate of the effect of simple arm-like annihilating DM distribution.