论文标题
通过惯性框架拖动效果区分MOG中的黑洞和裸体奇异性
Distinguishing Black Hole and Naked Singularity in MOG via Inertial Frame Dragging Effect
论文作者
论文摘要
我们分析了固定时空周围的测试陀螺仪的广义自旋进动，即针对标量tensor-vector重力或修饰的重力〜（mog）中的kerr-mog黑洞〜（BH）。与非超级BH，naked singularity〜（ns）}相比，已经针对\ emph {non}极端kerr-mog bh，\ emph {极端} kerr-mog bh，\ emph {xumph {极端}对\ emph {non}极端的kerr-mog bh，\ emph {non} {non}极端的sigrality〜（ns）}进行了详细研究。 {我们已经计算出的}的广义自旋频率可以用{} bh质量参数，角动量参数和MOG参数表示。此外，我们通过计算上述进动频率来区分非超级BH，极端BH和NS。通过将极限作为$Ω= 0 $ i，透镜thirring〜（lt）频率{can}从广义旋转频率获得。 e。 {}角频率设置为零限制时。此外，我们计算各种{}角坐标值的LT频率，即从极性到{}赤道平面开始。我们表明，LT频率在极端BH的地平线上有分歧。最后，我们通过计算三个上环状频率（即开普勒频率，{}径向环保频率和{}垂直环环频率的三个频率。我们还计算了Periastron频率和淋巴结频率。借助这些频率轮廓，{一个}可以区分三个紧凑的对象i。 e。 \ emph {non-Extremal bh，极端BH} {and} \ emph {ns}。
We analyze the generalized spin precession of a test gyroscope around a stationary spacetime i.e. for Kerr-MOG black hole~(BH) in scalar-tensor-vector gravity or modified gravity~(MOG). A detailed study of generalized spin frequency has been done for \emph{non} extremal Kerr-MOG BH, \emph{extremal} Kerr-MOG BH and \emph{naked singularity~(NS)} in comparison to non-extremal BH, extremal BH, and NS of Kerr spacetime. The generalized spin frequency that {we have} computed could be expressed in terms of {the} BH mass parameter, the angular momentum parameter, and the MOG parameter. Moreover, we differentiate the non-extremal BH, extremal BH, and NS via computation of the said precession frequency. The Lense-Thirring~(LT) frequency {can} obtain from generalized spin frequency by taking the limit as $Ω=0$ i. e. {when the} angular frequency is set to zero limit. Furthermore, we compute the LT frequency for various {values of} angular coordinates i.e. starting from polar to {the} equatorial plane. We show that the LT frequency diverges at the horizon for extremal BH. Finally, we study the accretion disk physics by computing three epicyclic frequencies namely the Keplerian frequency, {the} radial epicyclic frequency and {the} vertical epicyclic frequency. We also compute the periastron frequency and nodal frequency. With the aid of these frequency profiles, {one} can distinguish three compact objects i. e. \emph{non-extremal BH, extremal BH} {and} \emph{NS}.
