Výsledky vyhledávání - "K. S. Kawabata"

Optical Spectropolarimetry of SN 2002[CLC]ap[/CLC]: A High-Velocity Asymmetric Explosion

Publikováno v: The Astrophysical Journal. 580:L39-L42

We present spectropolarimetry of the Type Ic supernova SN 2002ap and give a preliminary analysis: the data were taken at two epochs, close to and one month later than the visual maximum (2002 February 8). In addition we present June 9 spectropolarime

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a523b97d7892b7a304abf9af9fef7fd7
https://doi.org/10.1086/345545

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Prompt optical polarimetry of GRB afterglow

Autor: K. S. Kawabata, HOWPol Grb Observaton Team, Kanata

Publikováno v: AIP Conference Proceedings.

Polarimetry of afterglows of GRBs can be a unique probe to the structure of the relativistic jets and their magnetic fields. However, polarimetry of early optical afterglow (t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8d6ce892ea20bab455fe3b37b5b697d
https://doi.org/10.1063/1.3701924

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Rapidly-Responding Optical Polarimetry of GRB afterglows with Hiroshima 1.5-m Telescope and One-shot Wide-field Polarimeter

Publikováno v: AIP Conference Proceedings.

We have developed an optical wide‐field polarimeter, HOWPol, which employs a wedged double Wollaston prism and enables us to derive linear polarization (i.e., Stokes Q/I and U/I) from only a single exposure. We successfully performed observation fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b3e28c1ae81b8d1b7290ecff0620c7f
https://doi.org/10.1063/1.3509309

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No Evidence for Variability of Intervening Absorption Lines toward GRB 060206: Implications for the Mg II Incidence Problem

Autor: K. Aoki, T. Totani, T. Hattori, K. Ohta, K. S. Kawabata, N. Kobayashi, M. Iye, K. Nomoto, N. Kawai, Charles Meegan, Chryssa Kouveliotou, Neil Gehrels

We examine variability of absorption line strength of intervening systems along the line of sight to GRB 060206 at $z = 4.05$, by the low-resolution optical spectra obtained by the Subaru telescope from six to ten hours after the burst. Strong variab

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Optical Spectropolarimetry of Three microquasars, Cyg X-1, LS 5039, LS I +61d 303

Autor: O. Nagae, K. S. Kawabata, Y. Fukazawa, A. Okazaki, M. Isogai, Ye-Fei Yuan, Xiang-Dong Li, Dong Lai

Publikováno v: AIP Conference Proceedings.

We present optical spectropolarimetric observations of three microquasars, Cyg X‐1, LS 5039 and LS I +61d 303. For Cyg X‐1, the observed polarization shows time variation correlated with the orbital phase. For LS 5039, there is no evidence of int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::66d7c5fae8e051396099fae187dff6c0
https://doi.org/10.1063/1.2840421

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