论文标题
SGR的阴影A $^*$黑洞被超流氟黑物包围
Shadows of Sgr A$^*$ Black Hole Surrounded by Superfluid Dark Matter Halo
论文作者
论文摘要
在本文中，我们构建了一个黑洞解决方案，该解决方案被超氟暗物质（BH-SFDM）和Baryonic物质包围，并研究它们对SGR A $^{*} $ Black Hole的阴影图像的影响。为了实现这一目标，我们考虑了由球形指数曲线和功率定律概况描述的重密度概况，包括一个特殊情况，描述了一个完全主导的暗物质星系（TDDMG）。使用当前值来获得SGR A $^{*} $黑洞的超流晶暗物质和重型型密度曲线的参数，我们发现与Kerr Vacuum黑洞相比，超氟暗物质和Baryonic物质对阴影尺寸的影响几乎可以忽略不计。此外，我们发现，通过增加男性质量，阴影尺寸大大增加。 This result can be linked to the matter distribution in the galaxy, namely the baryonic matter is mostly located in the galactic center and therefore, by increasing the baryonic matter can affect the size of black hole shadow compared to the totally dominated dark matter galaxy where we observe an increase of the angular diameter of the Sgr A$^{*}$ black hole of the magnitude $10^{-5} μ$arcsec.
In this paper we construct a black hole solution surrounded by superfluid dark matter (BH-SFDM) and baryonic matter, and study their effects on the shadow images of the Sgr A$^{*}$ black hole. To achieve this goal, we have considered two density profiles for the baryonic matter described by the spherical exponential profile and the power law profile including a special case describing a totally dominated dark matter galaxy (TDDMG). Using the present values for the parameters of the superfluid dark matter and baryonic density profiles for the Sgr A$^{*}$ black hole, we find that the effects of the superfluid dark matter and baryonic matter on the size of shadows are almost negligible compared to the Kerr vacuum black hole. In addition, we find that by increasing the baryonic mass the shadow size increases considerably. This result can be linked to the matter distribution in the galaxy, namely the baryonic matter is mostly located in the galactic center and therefore, by increasing the baryonic matter can affect the size of black hole shadow compared to the totally dominated dark matter galaxy where we observe an increase of the angular diameter of the Sgr A$^{*}$ black hole of the magnitude $10^{-5} μ$arcsec.
