| タイトル | New Hubble Space Telescope Observations of High-Velocity Ly(alpha) and H(alpha) in SNR 1987A |
| 著者（英） | Challis, Peter; Schmidt, Brian; Pun, C. S. J.; Kirshner, Robert P.; Suntzef, Nicholas; Fransson, Claes; Borkowski, Kazimierz; Michael, Eli; Panagia, Nino; Phillips, Mark; McCray, Richard; Filippenko, Alexei V.; Chevalier, Roger; Garnavich, Peter |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1998-12-20 |
| 言語 | eng |
| 内容記述 | We describe and model high-velocity (approximately 15,000 km S(exp -1)) Ly Alpha and H Alpha emission from the supernova remnant SNR 1987A seen in 1997 September and October with the Space Telescope Imaging Spectrograph. Part of this emission comes from a reverse shock located at approximately 75% of the radius of the inner boundary ofthe innercircumstellar ring and confined within + or - 30 degrees of the equatorial plane. Departure from axisymmetry in the Ly Alpha and H Alpha emission correlates with that seen in nonthermal radio emission and reveals an asymmetry in the circumstellar gas distribution. We also see diffuse high-velocity Ly-Alpha emission from supernova debris inside the reverse shock that may be due to excitation by nonthermal particles accelerated by the shock. |
| NASA分類 | Astronomy |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/344495 |
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