论文标题
一项关于渐近de Sitter SpaceTime中黑洞阴影的研究
A study on black hole shadows in asymptotically de Sitter spacetimes
论文作者
论文摘要
以前关于黑洞阴影的作品主要集中在研究渐近平坦和反DE保姆空间时间中的阴影。在目前的工作中，我们发现静态和共同观察者所见的渐近de de Sitter黑洞阴影的一般表达式，对于任何球形对称的黑洞解决方案，在任何时空的重力理论中，在任何时空维度中。作为测试用例，我们使用派生的一般表达式来研究三种不同的黑洞解决方案的阴影：四维reissner-nordströmde Sitter黑洞，最近提出的四维高斯邦内特·de Sitter de Sitter Black Black Hole和五尺寸高斯Bonnet Bonnet de Sitter黑洞。
Previous works on black hole shadows have been primarily focused on studying shadows in asymptotically flat and anti-de Sitter space times. In the present work, we find general expressions for asymptotically de Sitter black hole shadow as seen by static and comoving observers, for any spherically symmetric black hole solution, in any space time dimension in generic theories of gravity. As test cases, we use the derived general expressions to study the shadow of three different black hole solutions: the four dimensional Reissner-Nordström de Sitter black hole, the recently proposed four dimensional Gauss Bonnet de Sitter black hole and the five dimensional Gauss Bonnet de Sitter black hole.
