54 citations · 361 across the 19 of their papers we have counts for
7 papers · 1 filter
Detection of Polarimetric Variations Associated with the Shortest Time-Scale Variability in S5 0716714
Mahito Sasada, Makoto Uemura, Akira Arai +7
We present the result of near-infrared and optical observations of the BL Lac object S5 0716714 carried out by the KANATA telescope. S5 0716714 has both a long term high-…
Outburst of a WZ Sge-type dwarf nova, AL Com in 2007
M. Uemura, A. Arai, M. Sasada +8
We report photometric observations of AL Com during its rare outburst in 2007. The light curve is reminiscent of its past superoutbursts in 1995 and 2001, except for the rebrighten…
Spectropolarimetry of R Coronae Borealis in 1998--2003: Discovery of Transient Polarization at Maximum Brightness
K. S. Kawabata, Y. Ikeda, H. Akitaya +5
We present an extended optical spectropolarimetry of R CrB from 1998 January to 2003 September. The polarization was almost constant in the phase of maximum brightness, being consi…
Very early multi-color observations of the plateau phase of GRB 041006 afterglow
Y. Urata, K. Y. Huang, Y. L. Qiu +17
Observations of the optical afterglow of GRB 041006 with the Kiso Observatory 1.05 m Schmidt telescope, the Lulin Observatory 1.0 m telescope and the Xinglong Observatory 0.6 m tel…
Multi-color Shallow Decay and Chromatic Breaks in the GRB 050319 Optical Afterglow
K. Y. Huang, Y. Urata, P. H. Kuo +19
Multi-wavelength B, V, R, I observations of the optical afterglow of GRB 050319 were performed by the 1.05-m telescope at Kiso Observatory and the 1.0-m telescope at Lulin Observat…
Spectropolarimetric Study on Circumstellar Structure of Microquasar LS I +61deg 303
Osamu Nagae, Koji S. Kawabata, Yasushi Fukazawa +10
We present optical linear spectropolarimetry of the microquasar LS I +61 303. The continuum emission is mildly polarized (up to 1.3 %) and shows almost no temporal change…