| タイトル | Recoil of the Stellar Remnant from the Puppis A Supernova: Proper-Motion Measurement from Chandra |
| 著者（英） | Petre, Robert; Winkler, P. F. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2006-01-01 |
| 言語 | eng |
| 内容記述 | A sequence of three Chandra X-ray Observatory High Resolution Camera images taken over a span of five years reveals arc-second-scale displacement of RX-J0822--4300, the stellar remnant near the center of the Puppis A supernova remnant. We measure its proper motion to be 0.16+/-0.02 arcsec/yr toward the west-southwest. At a distance of 2 kpc, this corresponds to a transverse space velocity of approx. 1500 km/s. This is the first case of a compact X-ray source with a directly measured proper motion. The space velocity is consistent with the explosion center inferred from proper motions of the oxygen-rich optical filaments, and confirms the idea that Puppis A resulted from an asymmetric explosion accompanied by a kick that imparted on the order of 3 x 10(exp 49) ergs of kinetic energy (some 3 percent of the supernova kinetic energy) to the stellar remnant. We will summarize this measurement and discuss possible mechanisms for producing such a violent kick. This research has been supported by NASA grant G04-5062X. |
| NASA分類 | Astrophysics |
| 権利 | Copyright |
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