论文标题
带电的粒子和epicyclic运动左右$ 4D $ EINSTEIN-GAUSS-BONNET黑洞浸入外部磁场
Charged particle and epicyclic motions around $4D$ Einstein-Gauss-Bonnet black hole immersed in an external magnetic field
论文作者
论文摘要
我们研究了浸入渐近均匀磁场的$ 4D $ EINSTEIN-GAUSS-BONNET（EGB）黑洞附近的粒子运动。众所周知，由于洛伦兹力，磁场可以强烈影响黑洞附近的带电粒子运动。我们发现，高斯 - 骨网（GB）耦合的存在产生了相似的效果，从而减少了最内向稳定的圆形轨道（ISCO）的半径，相对于纯粹的相对论性的Schwarzschild黑洞。此外，我们考虑在黑洞附近的粒子碰撞来确定质量能的中心，并表明由于GB项的效果，这种能量相对于Schwarzschild情况而增加。最后，我们将上环状运动及其频率和共振视为测试模型对天体物理观察的预测的均值。特别是我们测试该理论参数的哪些值最能适应三种低质量X射线二进制文件中高频准周期振荡的3：2共振。
We investigate particle motion in the vicinity of a $4D$ Einstein-Gauss-Bonnet (EGB) black hole immersed in external asymptotically uniform magnetic field. It is well known that magnetic fields can strongly affect charged particle motion in the black hole vicinity due to the Lorenz force. We find that the presence of the Gauss-Bonnet (GB) coupling gives rise to a similar effect, reducing the radius of the innermost stable circular orbit (ISCO) with respect to the purely relativistic Schwarzschild black hole. Further, we consider particle collisions in the black hole vicinity to determine the center of mass energy and show that this energy increases with respect to the Schwarzschild case due to the effect of the GB term. Finally, we consider epicyclic motion and its frequencies and resonance as a mean to test the predictions of the model against astrophysical observations. In particular we test which values of the parameters of the theory best fit the 3:2 resonance of high-frequency quasi-periodic oscillations in three low-mass X-ray binaries.
