Mass of perfect fluid black shells
نویسنده
چکیده
The spherically symmetric singular perfect fluid shells are considered when their radii are equal to the event horizon (the black shells). We study their observable masses, depending at least on the three parameters, viz. the square speed of sound in the shell, instantaneous radial velocity of the shell at a moment when it reaches the horizon, and integration constant related to surface mass density. We discuss the features of black shells depending on an equation of state. PACS numbers: 04.40.−b, 04.70.−s, 11.27.+d
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تاریخ انتشار 1998