Abstract
To allow an objective study of transition region blinkers an automated identification program has been developed to analyse the CDS/SoHO data. The general properties of blinkers identified by this method confirmed the properties of those identified by eye in previous studies. Blinkers have typical lifetimes of about 20 minutes, areas of about 2.8 x 10(7) km(2) and intensity enhancement factors of about 2. For the first time, blinkers have been identified in active regions. These blinkers have the same general properties as quiet-region blinkers. The automated approach found many more blinkers than previously had been found giving a global birth rates of about 9 s(-1) for quiet-region blinkers and 16 s(-1) for active-region blinkers. Most blinkers, active or quiet region, are red shifted with typical velocities of about 13 km s(-1). Finally, we can confirm that blinkers are not enhancements in temperature, but either enhancements in density or increases in the filling factor.
| Original language | English |
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| Title of host publication | Recent Insights into the Physics of the Sun and Heliosphere - Highlights from Soho and other Space Missions |
| Subtitle of host publication | IAU Symposium 203 |
| Place of Publication | San Francisco |
| Publisher | Astronomical Society of the Pacific |
| Pages | 359-361 |
| Number of pages | 3 |
| Publication status | Published - 2001 |
| Event | IAU Symposium 203 : Recent Insights into the Physics of the Sun and Heliosphere - Highlights from Soho and other Space Missions - Manchester, United Kingdom Duration: 7 Aug 2000 → 11 Aug 2000 |
Conference
| Conference | IAU Symposium 203 : Recent Insights into the Physics of the Sun and Heliosphere - Highlights from Soho and other Space Missions |
|---|---|
| Country/Territory | United Kingdom |
| City | Manchester |
| Period | 7/08/00 → 11/08/00 |
Keywords
- QUIET SUN
- ULTRAVIOLET