A5028759418- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Astrophysics and Cosmic Phenomena
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Stellar, planetary, and galactic studies
- Particle Accelerators and Free-Electron Lasers
- Geophysics and Gravity Measurements
- Particle accelerators and beam dynamics
- Diverse Music Education Insights
- Social and Cultural Dynamics
- Astrophysics and Star Formation Studies
- Galaxies: Formation, Evolution, Phenomena
- Magnetic confinement fusion research
- Cultural Industries and Urban Development
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- Astronomical Observations and Instrumentation
- Superconducting Materials and Applications
Saitama University
2025
Hiroshima University
2014-2015
Abstract The relationships between youth culture and social transitions are examined through a Bourdieusian analysis of musical inequality in contemporary Japan. Employing Bourdieu's concepts habitus, capital, field, space, the traditional divide cultural studies transition research is addressed. Using mixed methods combining multiple correspondence (MCA) survey data ( n = 1425) in‐depth interviews 42), this study examines how practices music intersect with career trajectories positions. MCA...
We present optical and near-infrared multi-band linear polarimetry of the highly reddened Type Ia supernova (SN) 2014J that appeared in M82. SN exhibits large polarization at shorter wavelengths, e.g., 4.8% B band, which decreases rapidly longer while position angle remains approximately 40° over observed wavelength range. These polarimetric properties suggest is likely predominantly caused by interstellar dust within Further analysis shows peaks a wavelengths much than those obtained for...
Abstract The Kiso Supernova Survey (KISS) is a high-cadence optical wide-field supernova (SN) survey. primary goal of the survey to catch very early light SN, during shock breakout phase. Detection SN breakouts combined with multi-band photometry obtained other facilities would provide detailed physical information on progenitor stars SNe. performed using 2 $_{.}^{\circ}$2 × field-of-view instrument 1.05-m Schmidt telescope, Wide Field Camera (KWFC). We take 3-min exposure in g-band once...
We report on monitoring observations of the TeV gamma-ray binary HESS J0632+057, which were carried out to constrain interaction between Be circumstellar disk and compact object unknown nature, provide for first time high-dispersion (R > 50000) optical spectra in second half orbital cycle, from apastron through periastron. The Halpha, Hbeta, Hgamma line profiles are found exhibit remarkable short-term variability ~1 month after (phase 0.6--0.7), whereas they show little variation near These...
We present our discovery of dramatic variability in SDSS J1100+4421 by the high-cadence transient survey Kiso Supernova Survey (KISS). The source brightened optical at least a factor three within about half day. Spectroscopic observations suggest that this object is likely narrow-line Seyfert 1 galaxy (NLS1) z=0.840, however with unusually strong narrow emission lines. estimated black hole mass ~ 10^7 Msun implies bolometric nuclear luminosity close to Eddington limit. also extremely...
Thanks to the unprecedented spectral resolution and sensitivity of Soft X-ray Spectrometer (SXS) soft thermal emission, ASTRO-H will open a new discovery window for understanding young, ejecta-dominated, supernova remnants (SNRs). In particular we study how observations address, comprehensively, three key topics in SNR research: (1) using abundance measurements unveil progenitors, (2) spatial velocity distribution ejecta understand explosion mechanisms, (3) revealing link between plasma...
Most supernova remnants (SNRs) are old, in the sense that their structure has been profoundly modified by interaction with surrounding interstellar medium (ISM). Old SNRs very heterogenous terms of appearance, reflecting differences evolutionary state, environments which SNe explode and explosion products. Some old seen primarily as a result strong shock wave interacting ISM. Others, so-called mixed-morphology SNRs, show central concentrations emission, may still evidence emission from...