Plasma tail of comet Bradfield 1987s during 1987 October 19–20
✍ Scribed by Andrea Cimatti
- Publisher
- Springer Netherlands
- Year
- 1989
- Tongue
- English
- Weight
- 909 KB
- Volume
- 47
- Category
- Article
- ISSN
- 1573-0794
No coin nor oath required. For personal study only.
✦ Synopsis
A large scale disturbance (LSD) in plasma tail of comet Bradfield 1987s has been observed in some wide field photographs taken in the days 1987 October 19-20. A conspicuous plasma 'cloud' moving along the tail axis is also visible. Wind-shock analysis shows that the LSD can be explained.as the effect of a strong variation in the ecliptical polar component of solar wind speed. An analysis of solar activity suggests that the possible cause of the LSD is a solar burst occurred on 1987 October 16.4 (UT). Correlated geomagnetic effects are found on October 25-26 using corotation method. The plasma 'cloud' seems to have a mean speed of 280 km s-l.