利用伽利略光偏振计辐射计对苏梅克-列维撞击事件的观测。

Observation of shoemaker-levy impacts by the galileo photopolarimeter radiometer.

作者信息

Martin T Z, Orton G S, Travis L D, Tamppari L K, Claypool I

出版信息

Science. 1995 Jun 30;268(5219):1875-9. doi: 10.1126/science.268.5219.1875.

DOI:10.1126/science.268.5219.1875

Abstract

The Galileo Photopolarimeter Radiometer experiment made direct photometric observations at 678 and 945 nanometers of several comet Shoemaker-Levy 9 fragments impacting with Jupiter. Initial flashes occurred at (fragment G) 18 July 1994 07:33:32, (H) 18 July 19:31:58, (L) 19 July 22:16:48, and (Q1) 20 July 20:13:52 [equivalent universal time coordinated (UTC) observed at Earth], with relative peak 945-nanometer brightnesses of 0.87, 0.67, 1.00, and 0.42, respectively. The light curves show a 2-second rise to maximum, a 10-second plateau, and an accelerating falloff. The Q1 event, observed at both wavelengths, yielded a color temperature of more than 10,000 kelvin at its peak.

摘要

伽利略光偏振辐射计实验对苏梅克-列维9号彗星的几个碎片撞击木星的过程进行了678纳米和945纳米波长的直接光度观测。最初的闪光分别出现在（碎片G）1994年7月18日07:33:32、（H）19:31:58、（L）7月19日22:16:48以及（Q1）7月20日20:13:52[在地球上观测到的协调世界时（UTC）]，相对峰值945纳米亮度分别为0.87、0.67、1.00和0.42。光变曲线显示，亮度上升到最大值用时2秒，有10秒的平稳期，然后亮度加速下降。在两个波长下都观测到的Q1事件，其峰值色温超过10000开尔文。