287 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP65 papers
- Kyoto UniversityJP56 papers
- National Astronomical Observatory of JapanJP28 papers
- Japan Science and Technology AgencyJP16 papers
- Tohoku UniversityJP16 papers
- Kyushu UniversityJP13 papers
- Institute of Space and Astronautical ScienceJP12 papers
- Nagoya UniversityJP11 papers
- Centre National de la Recherche ScientifiqueFR8 papers
- Pennsylvania State UniversityUS8 papers
- The University of OsakaJP7 papers
- University of California, BerkeleyUS7 papers
11 papers · 1 filter
Equidimensionality of complex Lagrangian fibrations
Daisuke Matsushita
We prove that every irreducible component of a fibre of a complex Lagrangian fibration is Lagrangian subvariety. Especially, complex Lagrangian fibations are equidimensional.
Observational Test of Environmental Effects on The Local Group Dwarf Spheroidal Galaxies
Naoyuki Tamura, Hiroyuki Hirashita
In this paper, we examine whether tidal forces exerted by the Galaxy or M31 have an influence on the Local Group dwarf spheroidal galaxies (dSphs) which are their companions. We fo…
ASCA Observations of the Sgr B2 Cloud: An X-Ray Reflection Nebula
H. Murakami, K. Koyama, M. Sakano +2
We present the ASCA results of imaging spectroscopy of the giant molecular cloud Sgr B2. The X-ray spectrum is found to be very peculiar; it exhibits a strong emission line at 6.4…
A Universal Profile of the Dark Matter Halo and the Two-point Correlation Function
Taihei Yano, Naoteru Gouda
We have investigated the relation between the two-point spatial correlation function and the density profile of the dark matter halo in the strongly non-linear regime. It is well k…
X-Ray/Gamma-Ray Observations of the PSR B1259-63/SS 2883 system near Apastron
M. Hirayama, L. R. Cominsky, V. M. Kaspi +4
We report the results from X-ray and hard X-ray observations of the PSR B1259-63/SS 2883 system with the ASCA and CGRO satellites, performed between 1995 February and 1996 January…
Source Size Limitation from Variabilities of a Lensed Quasar
Atsunori Yonehara
In the case of gravitationally-lensed quasars, it is well-known that there is a time delay between occurrence of the intrinsic variabilities in each split image. Generally, the sou…
The Mass-to-Light Ratio of Binary Galaxies
Mareki Honma
We report on the mass-to-light ratio determination based on a newly selected binary galaxy sample, which includes a large number of pairs whose separations exceed a few hundred kpc…
Further studies of 1E 1740.7-2942 with ASCA
Masaaki Sakano, Kensuke Imanishi, Masahiro Tsujimoto +2
We report the ASCA results of the Great Annihilator 1E 1740.7-2942 obtained with five pointing observations in a time span of 3.5 years. The X-ray spectrum for each period is well…
MACHO Mass Determination Based on Space Telescope Observation
Mareki Honma
We investigate the possibility of lens mass determination for a caustic crossing microlensing event based on a space telescope observation. We demonstrate that the parallax due to…
Dust-to-Gas Ratio and Metallicity in Dwarf Galaxies
H. Hirashita
We examine the dust-to-gas ratio as a function of metallicity for dwarf galaxies [dwarf irregular galaxies (dIrrs) and blue compact dwarf galaxies (BCDGs)]. Using a one-zone model…
Evolution of Interstellar Clouds in Local Group Dwarf Spheroidal Galaxies in the Context of Their Star Formation Histories
H. Hirashita
We consider evolution of interstellar clouds in Local Group dwarf spheroidal galaxies (dSphs) in the context of their observed star formation histories. The Local Group dSphs gener…