**Table 1:** Specific angular momentum for the last stable orbit ( $j_{\rm LSO}$ ) around a black hole with a given mass ( $M_{\rm BH}$ ), calculated according to Bardeen et al. (1972). Here, $j_{\rm SCH}$ and $j_{\rm Kerr,max}$ denote the cases for Schwarzschild black hole (non-rotating) and maximally rotating Kerr black hole, respectively.
$M_{\rm BH}$	$j_{\rm SCH}$	$j_{\rm Kerr,max}$
	[ ${\rm cm^2~s^{-1}}$ ]	[ ${\rm cm^2~s^{-1}}$ ]
$2.0~{M_\odot}$	$3.07\times10^{16}$	$1.03\times10^{16}$
$3.0~{M_\odot}$	$4.60\times10^{16}$	$1.55\times10^{16}$
$4.0~{M_\odot}$	$6.13\times10^{16}$	$2.06\times10^{16}$
$5.0~{M_\odot}$	$7.66\times10^{16}$	$2.57\times10^{16}$
$10.0~{M_\odot}$	$1.53\times10^{17}$	$5.14\times10^{16}$

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