ABCJAXA-ISASDNASAEFGKEKHIJKLMNICTNUniv. of WisconsinOPQJAXARSTUVWXYKLCZAEIAALancaster Univ.ABUniv. of BirminghamACADAELiverpool JMUAFAGAHAICaltechAJUniv. TuebingenAKALAMANAOUWMAPAQARASATAURITAVAWAXJAXA-Space Education CenterAYRRIAZBABBJAXA-JSPECBCBDBEAPCTPBFAABACDEFGHDICJCKLDCFMNOPQRSTUVWXYCZAARIDDNXDLABCACADAEAFAG CDAHGGWVAIMSCAJAKALCMDAMANMKAOAAPCAQARASNATFCAUAVNAWSDAHAUDAAAGAOAXAYXAZBANBBIDAJXXANQABCBDABEAABFCBAATS DECIGO

first star380kyr dark age . 13.7Gyryr ?

R. Saito and J. Yokoyama, Phys. Rev. Lett. 102(2009)161101K. Nakayama, S. Saito, Y. Suwa and J. Yokoyama, Phys. Rev. D77(2008)1240001, JCAP 06(2008)020K. Nakayama and J. Yokoyama, To be published

, etc 10201026 g = Primordial Black Holes (PBHs).?PBH(Carr, Kohri, Sendouda, & JY 09)

: Scalar modes: and ; Tensor modes .transverse-traceless ( ) tensor mode

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