Masashi Kimura

Line-of-sight Shell Structure of the Cygnus Loop (2009)

Uchida, Hiroyuki, Tsunemi, Hiroshi, Katsuda, Satoru, Kimura, Masashi, Kosugi, Hiroko, Takahashi, Hiroaki

We conducted a comprehensive study on the shell structure of the Cygnus Loop using 41 observation data obtained by the Suzaku and the XMM-Newton satellites. To investigate the detailed plasma...

Topology Changing Process of Coalescing Black Holes on Eguchi-Hanson Space (2009)

Kimura, Masashi, Ishihara, Hideki, Tomizawa, Shinya, Yoo, Chul-Moon

We numerically study the event horizons of two kinds of five-dimensional coalescing black hole solutions with different asymptotic structures: the five-dimensional Kastor-Traschen solution (5DKT) and...

Hoop Conjecture and the Horizon Formation Cross-Section in Kaluza-Klein Spacetimes (2009)

Yoo, Chul-moon, Ishihara, Hideki, Kimura, Masashi, Tanzawa, Sugure

We analyze momentarily static initial data sets of the gravitational field produced by two-point sources in five-dimensional Kaluza-Klein spacetimes which are characterized by mass, separation of...

Dynamical Black Rings with a Positive Cosmological Constant (2009)

Kimura, Masashi

We construct dynamical black ring solutions in the five dimensional Einstein-Maxwell system with a positive cosmological constant and investigate the geometrical structure. The solutions describe the...

The Abundance Inhomogeneity in the Northern Rim of the Cygnus Loop (2009)

Uchida, Hiroyuki, Tsunemi, Hiroshi, Katsuda, Satoru, Kimura, Masashi, Kosugi, Hiroko, Takahashi, Hiroaki

We observed the northern rim of the Cygnus Loop with the \textit{Suzaku} observatory in 5 pointings (P21-P25). From the spatially resolved analysis, all the spectra are well fitted by the single...

The Ejecta Distributions of the Heavy Elements in the Cygnus Loop (2009)

Uchida, Hiroyuki, Tsunemi, Hiroshi, Katsuda, Satoru, Kimura, Masashi, Kosugi, Hiroko

We analyzed the metal distribution of the Cygnus Loop using 14 and 7 pointings observation data obtained by the \textit{Suzaku} and the \textit{XMM-Newton} observatories. The spectral analysis shows...

Forward Shock Proper Motions of Kepler's Supernova Remnant (2008)

Katsuda, Satoru, Tsunemi, Hiroshi, Uchida, Hiroyuki, Kimura, Masashi

The X-ray structure of Kepler's supernova remnant shows a rounded shape delineated by forward shocks. We measure proper motions of the forward shocks on overall rims of the remnant, by using archival...

Another Abundance Inhomogeneity in the South East Limb of the Cygnus Loop (2008)

Tsunemi, Hiroshi, Kimura, Masashi, Uchida, Hiroyuki, Mori, Koji, Katsuda, Satoru

We have observed the south-east (SE) limb of the Cygnus Loop with {\it Suzaku}. Our spatially-resolved spectroscopic study shows that a one-$kT_\mathrm{e}$ non-equilibrium ionization model represents...

Suzaku Observations across the Cygnus Loop from the Northeastern to the Southwestern Rim (2008)

Kimura, Masashi, Tsunemi, Hiroshi, Katsuda, Satoru, Uchida, Hiroyuki

We have observed the Cygnus Loop from the northeast (NE) rim to the southwest (SW) rim using Suzaku in 10 pointings that is just north of previous XMM-Newton observations. The observation data...

New CTI Correction Method for the Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer (2008)

Uchiyama, Hideki, Ozawa, Midori, Matsumoto, Hironori, Tsuru, Takeshi Go, Koyama, Katsuji, Kimura, Masashi, ...

The charge transfer inefficiency (CTI) of the X-ray CCDs on board the Suzaku satellite (X-ray Imaging Spectrometers; XIS) has increased since the launch due to radiation damage, and the energy...

The Plasma Structure of the Southwestern Region of the Cygnus Loop with the XMM-Newton Observatory (2008)

Uchida, Hiroyuki, Tsunemi, Hiroshi, Katsuda, Satoru, Kimura, Masashi

We observed the southwestern region of the Cygnus Loop in two pointings with \textit{XMM-Newton}. The region observed is called the "blow-out" region that is extended further in the south. The origin...

Chandra Observations of the Northeastern Rim of the Cygnus Loop (2008)

Katsuda, Satoru, Tsunemi, Hiroshi, Kimura, Masashi, Mori, Koji

We present results from spatially resolved spectral analyses of the northeastern (NE) rim of the Cygnus Loop supernova remnant (SNR) based on two Chandra observations. One pointing includes northern...

Anisotropic Inflation from Vector Impurity (2008)

Kanno, Sugumi, Kimura, Masashi, Soda, Jiro, Yokoyama, Shuichiro

We study an inflationary scenario with a vector impurity. We show that the universe undergoes anisotropic inflationary expansion due to a preferred direction determined by the vector. Using the...

Analyticity of Event Horizons of Five-Dimensional Multi-Black Holes with Non-Trivial Asymptotic Structure (2008)

Kimura, Masashi

We show that there exist five-dimensional multi-black hole solutions which have analytic event horizons when the space-time has non-trivial asymptotic structure, unlike the case of five-dimensional...

Evolution of perturbations of squashed Kaluza-Klein black holes: escape from instability (2008)

Ishihara, Hideki, Kimura, Masashi, Konoplya, Roman A., Murata, Keiju, Soda, Jiro, Zhidenko, Alexander

The squashed Kaluza-Klien (KK) black holes differ from the Schwarzschild black holes with asymptotic flatness or the black strings even at energies for which the KK modes are not excited yet, so that...

One-step isolation of plasma membrane proteins using magnetic beads with immobilized concanavalin A (2008)

Lee, Yu-Chen, Block, Gregory, Chen, Huiwen, Folch-Puy, Emma, Foronjy, Robert, Jalili, Roxana, ...

We have developed a simple method for isolating and purifying plasma membrane proteins from various cell types. This one-step affinity-chromatography method uses the property of the lectin...

On the Stability of Squashed Kaluza-Klein Black Holes (2007)

Kimura, Masashi, Murata, Keiju, Ishihara, Hideki, Soda, Jiro

The stability of squashed Kaluza-Klein black holes is studied. The squashed Kaluza-Klein black hole looks like five dimensional black hole in the vicinity of horizon and four dimensional Minkowski...

Horizons of Coalescing Black Holes on Eguchi-Hanson Space (2007)

Yoo, Chul-Moon, Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Tomizawa, Shinya

Using the numerical method, we study dynamics of coalescing black holes on the Eguchi-Hanson base space. Effects of a difference in spacetime topology on the black hole dynamics is discussed. We...

Coalescence of Rotating Black Holes on Eguchi-Hanson Space (2007)

Matsuno, Ken, Ishihara, Hideki, Kimura, Masashi, Tomizawa, Shinya

We obtain new charged rotating multi-black hole solutions on the Eguchi-Hanson space in the five-dimensional Einstein-Maxwell system with a Chern-Simons term and a positive cosmological constant. In...

Supersymmetric Black Rings on Eguchi-Hanson Space (2007)

Tomizawa, Shinya, Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken

We construct new supersymmetric black ring solutions on the Eguchi-Hanson base space as solutions of five-dimensional minimal supergravity. The solutions have the same two angular momentum components...

Cosmological Black Holes on Taub-NUT space in Five-Dimensional Einstein-Maxwell Theory (2007)

Ida, Daisuke, Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Morisawa, Yoshiyuki, Tomizawa, Shinya

The cosmological black hole solution on the Gibbons-Hawking space has been constructed. We also investigate the properties of this solution in the case of a single black hole. Unlike the...

Topology Change of Coalescing Black Holes on Eguchi-Hanson Space (2006)

Ishihara, Hideki, Kimura, Masashi, Tomizawa, Shinya

We construct multi-black hole solutions in the five-dimensional Einstein-Maxwell theory with a positive cosmological constant on the Eguchi-Hanson space, which is an asymptotically locally Euclidean...

Black Holes on Eguchi-Hanson Space in Five-Dimensional Einstein-Maxwell Theory (2006)

Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Tomizawa, Shinya

We construct a pair of black holes on the Eguchi-Hanson space as a solution in the five-dimensional Einstein-Maxwell theory.

Kaluza-Klein Multi-Black Holes in Five-Dimensional Einstein-Maxwell Theory (2006)

Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Tomizawa, Shinya

We construct the Kaluza-Klein multi-black hole solutions on the Gibbons-Hawking multi-instanton space in the five-dimensional Einstein-Maxwell theory. We study geometric properties of the multi-black...

Clinical and Arthroscopic Findings of Acute Anterior Cruciate Ligament Tears of the Knee (1995)

Kenji Shirakura, Masanori Terauchi, Naoki Fukasawa, Masashi Kimura, Takachika Shimizu

Clinical, arthrographic, and arthroscopic findings in 53 patients with acutely torn anterior cruciate ligaments (ACLs) were documented. Arthroscopy and instability tests under anesthesia were...

A micronucleus-specific sequence exists in the 5'-upstream region of calmodulin gene in Tetrahymena thermophila (1993)

Katoh, Mariko, Hirono, Masafumi, Takemasa, Tohru, Kimura, Masashi, Watanabe, Yoshio

Tetrahymena thermophila possesses a transcriptionally inactive mlcronucleus and an active macronucleus. Both nuclei are developed from micronucleus-derived germ nuclei during conjugation. Extensive...

Drastic Change in the Level of Actin mRNA in the Course of Synchronous Division in Tetrahymena (1991)

Kimura, Masashi, Hirono, Masafumi, Takemasa, Tohru, Watanabe, Yoshio

Change in actin mRNA level was investigated in the course of synchronous division in Tetrahymena induced by intermittent heat treatment. The level of actin mRNA decreased from just after the end of...

Mitotic Phosphorylation of Histone H3: Spatio-Temporal Regulation by Mammalian Aurora Kinases

Crosio, Claudia, Fimia, Gian Maria, Loury, Romain, Kimura, Masashi, Okano, Yukio, Zhou, Hongyi, ...

Phosphorylation at a highly conserved serine residue (Ser-10) in the histone H3 tail is considered to be a crucial event for the onset of mitosis. This modification appears early in the G2 phase...

Mitotic Phosphorylation of Histone H3: Spatio-Temporal Regulation by Mammalian Aurora Kinases

Crosio, Claudia, Fimia, Gian Maria, Loury, Romain, Kimura, Masashi, Okano, Yukio, Zhou, Hongyi, ...

Phosphorylation at a highly conserved serine residue (Ser-10) in the histone H3 tail is considered to be a crucial event for the onset of mitosis. This modification appears early in the G2 phase...

Clinical and Arthroscopic Findings of Acute Anterior Cruciate Ligament Tears of the Knee

Shirakura, Kenji, Terauchi, Masanori, Fukasawa, Naoki, Kimura, Masashi, Shimizu, Takachika

Clinical, arthrographic, and arthroscopic findings in 53 patients with acutely torn anterior cruciate ligaments (ACLs) were documented. Arthroscopy and instability tests under anesthesia were...