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 _____     __   __             _    _    ______   
|  __ \\   \ \\/ //     ___   | || | || |      \\ 
| |  \ ||   \ ` //     /   || | || | || |  --  // 
| |__/ ||    | ||     | [] || | \\_/ || |  --  \\ 
|_____//     |_||      \__ ||  \____//  |______// 
 -----`      `-`'       -|_||   `---`   `------`  
                         `-`

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發送短信 : Kerr black hole surrounded by dark matter: Horizon, photonosphere and shadow