Investigating the Physical Properties of the Outburst of comet 67P/Churyumov-Gerasmenko
Zhong-Yi Lin1*, J. Knollenberg2, J.-B. Vincent2
1Institute of Astronomy, National Central University, Taoyuan City, Taiwan
2Institute of Planetary Research, DLR, Berlin, Germany
* presenting author:Zhong-Yi Lin, email:zylin@astro.ncu.edu.tw
The phenomena of cometary outbursts have been observed in several comets by ground-based telescope and in situ instruments of spacecraft. However, the mechanism and physical properties for these activities are still unclear. The OSIRIS camera onboard the Rosetta spacecraft provided first-hand information on the transient events (outbursts) of comet 67P/C-G during perihelion passage in 2015. The physical properties of the outbursts can be therefore investigated via time-series images with high-resolution images. Our analysis is given to the wide- and narrow-angle images obtained in the monitoring and outburst sequences between July and September 2015.
In this work, we will present our results of the calculated excess brightness from these outburst plume, the delta ejection masses during outbursts, and the brightness slopes of outburst plumes.


Keywords: comets, 67P/Churyumov-Gerasmenko, outbursts