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<p>In this paper, I discuss the macroscopic properties of the ultracompact object XTE J1814-338, whose inferred mass and radius read <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10509_2025_4472_Article_IEq1.gif" Format="GIF" Height="15" Rendition="HTML" Resolution="72" Type="Linedraw" Width="86" /> </InlineMediaObject> <EquationSource Format="MATHML"><math> <mi>M</mi> <mo>=</mo> <mn>1.21</mn> <mo>±</mo> </math></EquationSource> <EquationSource Format="TEX">$M = 1.21 \pm $</EquationSource> </InlineEquation> 0.05 <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10509_2025_4472_Article_IEq2.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="MATHML"><math> <msub> <mi>M</mi> <mo>⊙</mo> </msub> </math></EquationSource> <EquationSource Format="TEX">$M_{\odot }$</EquationSource> </InlineEquation> and R = 7.0 ± 0.4&#xa0;km as a dark matter-admixed strange star. By using the neutralino as WIMP dark matter with a fixed Fermi momentum, I calculated the moment of inertia, the gravitational redshift, the dimensionless tidal parameter, and the total amount of dark matter for a 1.2<InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10509_2025_4472_Article_IEq2.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="MATHML"><math> <msub> <mi>M</mi> <mo>⊙</mo> </msub> </math></EquationSource> <EquationSource Format="TEX">$M_{\odot }$</EquationSource> </InlineEquation> star. At the end, I study the role of the neutralino’s mass.</p>

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Macroscopic properties of the XTE J1814-338 as a dark matter admixed strange star

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Luiz L. Lopes

摘要

In this paper, I discuss the macroscopic properties of the ultracompact object XTE J1814-338, whose inferred mass and radius read M = 1.21 ± $M = 1.21 \pm $ 0.05 M ⊙ $M_{\odot }$ and R = 7.0 ± 0.4 km as a dark matter-admixed strange star. By using the neutralino as WIMP dark matter with a fixed Fermi momentum, I calculated the moment of inertia, the gravitational redshift, the dimensionless tidal parameter, and the total amount of dark matter for a 1.2 M ⊙ $M_{\odot }$ star. At the end, I study the role of the neutralino’s mass.