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<p>In the indirect search for dark matter, recent observations of gamma-ray, X-ray and radio signals have imposed strong constraints on annihilating particle dark matter. In this article, we explore the near-infrared data from the region of the inner Galactic Center to adopt an indirect method for constraining dark matter mass and annihilation cross-section. By examining the dark matter density spike model with two different benchmark values of the spike index, we rule out a large parameter space of the annihilation cross section against dark matter mass for some of the preferred annihilation channels (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\mu ^{\pm }\)</EquationSource> </InlineEquation>,<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(e^{\pm }\)</EquationSource> </InlineEquation>, <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\tau ^{\pm }\)</EquationSource> </InlineEquation>, <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(b\bar{b}\)</EquationSource> </InlineEquation>, <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(W^{\pm }\)</EquationSource> </InlineEquation>).</p>

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Constraining annihilating dark matter using near-infrared data from the Galactic Center

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月27日

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  • Chak Man Lee,
  • Man Ho Chan

摘要

In the indirect search for dark matter, recent observations of gamma-ray, X-ray and radio signals have imposed strong constraints on annihilating particle dark matter. In this article, we explore the near-infrared data from the region of the inner Galactic Center to adopt an indirect method for constraining dark matter mass and annihilation cross-section. By examining the dark matter density spike model with two different benchmark values of the spike index, we rule out a large parameter space of the annihilation cross section against dark matter mass for some of the preferred annihilation channels ( \(\mu ^{\pm }\) , \(e^{\pm }\) , \(\tau ^{\pm }\) , \(b\bar{b}\) , \(W^{\pm }\) ).