Scholarlink

<p>In this study, we investigate the strong gravitational lensing and shadow properties of a Kalb-Ramond black hole characterized by the Lorentz parameter <i>l</i>, in the presence of both homogeneous and inhomogeneous plasma distributions. Starting from the equation of motion of the plasma, we derive an analytical expression for the strong deflection angle. Our results show that the radius of the photon sphere, strong field parameters, and strong deflection angle are significantly affected by the presence of the plasma. Numerical calculations were performed to compute the lensing observables, angular image position, angular image separation, and flux ratio between the outermost and remaining images for the supermassive black hole SgrA<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="13538_2025_1921_Article_IEq1.gif" Format="GIF" Height="8" Rendition="HTML" Resolution="72" Type="Linedraw" Width="9" /> </InlineMediaObject> <EquationSource Format="TEX">\(^*\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mo>∗</mo> </mmultiscripts> </math></EquationSource> </InlineEquation>, which is believed to be the supermassive black hole at the center of our galaxy, in the presence of plasma. Furthermore, we studied the impact of plasma on the shadow radius of the Kalb-Ramond black hole. The study concludes that both the Lorentz parameter and the plasma medium substantially affect the strong gravitational lensing and shadow properties, with the effects being more pronounced in the case of homogeneous plasma.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Strong Gravitational Lensing and Shadow of the Kalb-Ramond Black Hole in Homogeneous and Inhomogeneous Plasma

  • 期刊论文

  • 发表日期：

    2025年10月22日

查看全文
  • Rukkiyya V. P,
  • Sini R

摘要

In this study, we investigate the strong gravitational lensing and shadow properties of a Kalb-Ramond black hole characterized by the Lorentz parameter l, in the presence of both homogeneous and inhomogeneous plasma distributions. Starting from the equation of motion of the plasma, we derive an analytical expression for the strong deflection angle. Our results show that the radius of the photon sphere, strong field parameters, and strong deflection angle are significantly affected by the presence of the plasma. Numerical calculations were performed to compute the lensing observables, angular image position, angular image separation, and flux ratio between the outermost and remaining images for the supermassive black hole SgrA \(^*\) ∗ , which is believed to be the supermassive black hole at the center of our galaxy, in the presence of plasma. Furthermore, we studied the impact of plasma on the shadow radius of the Kalb-Ramond black hole. The study concludes that both the Lorentz parameter and the plasma medium substantially affect the strong gravitational lensing and shadow properties, with the effects being more pronounced in the case of homogeneous plasma.