60 S.L.Glashow Glashow : Interaction Warner Books
4 4 1978 12
CMB 10-40 -40 CMB
/
The universe in a nutshell
A
H He C, O Ne, Mg Si Fe
Sphere(0.1 cylinder (0. slab (0. Cylinder hole (0. Spherical hole (0.
20 CMB CMB
= 1 0.2 0.8 0.2 0.2 0.4 0.1 0.005 0.002 CDM 0.04 0.005 0.35 0.1 0.001 0.01 0.01 0.1 1.0 Ωtotal
21 20
Expanding the expanding universe 0th order 1st order 2nd order 3rd order 4th order L-th order M-th order N-th order
Zooming in the simulated structure 75h -1 Mpc 5h -1 Mpc 20h -1 Mpc SPH simulations in LCDM (Yoshikawa, Taruya, Jing & Suto 2001)
~ 5x10 12 M sun ~ 5x10 13 M sun ~ 3x10 14 M sun Jing & Suto (2000)
Slices from SDSS spectroscopic galaxy samples Clustering of galaxies on the light-cone! (although the light-cone effect is not important) 9971 galaxies (r <17) in in SDSS EDR (Early Data Release) Classification of of early and late -types using the concentration index (Doi, Fukugita & Okamura 1993) by Nakamura, Fukugita et et al. (2001) slice early late total A 2151 3145 5296 B 1612 3063 4675
SDSS Morphology dependent correlation functions of SDSS galaxies N-body Mock samples and the model predictions SDSS early-type SDSS late-type type average SDSS データ解析 : Kayo, Nakamura Fukugita, Suto et al (2002) redshift space Redshift-space distortion real space 理論モデル :Hamana, Colombi & Suto(2000)
Morphology-dependent galaxy bias from SDSS data b( s) ξ( s; galaxies)/ ξ( s; ΛCDM) early-type late-type type assumed fluctuation amplitude and pair-wise velocity dispersion [km/s] average CDM (+ σ 8,, σ p ) assumed. clear morphology dependence on clustering amplitude. early -types are positively biased relative to to mass, while late -types are antibiased. galaxy bias is is fairly scale-independent. Kayo et al., in preparation
Are we alone?
(Wolszczan & Frail) (Mayor & Quelos) (Butler, Marcy & Fisher) (Charbonneau et al., Henry et al.)
3m/s
(Charbonneau et al. 2000, Henry et al. 2000) (Charbonneau et al. 2001)
characterization habitable planets? search for life CO 2 O 3 H 2 O
S.L.Shapiro and S.Teukolsky Black Holes, White Dwarfs and Neutron Stars