Ballon observations of simultaneous auroral X-ray and visible emissions
Abstract
Balloon-borne detectors capable of simultaneous measurement of auroral X-rays and visible emissions were flown from Ft. McMurray, Alberta (L = 5.5) in the fall of 1970 and the spring of 1971. The 3914 A photometer represented a marked improvement over previous instruments used in the field since it did not depend on a variable transition time such as occurs with the 5577 A line. This feature allows more accurate timing between correlated X-ray and visible auroral emissions. Six such correlated bursts were observed and were found to be simultaneous to within 0.25 seconds. These bursts are believed to result from the inverted V electron distribution pattern. It is concluded that such inverted V patterns are temporal in nature. Visible pulsations (periods of 15-20 seconds) were observed that did not fall into existing classification schemes.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1974
- Bibcode:
- 1974PhDT........12G
- Keywords:
-
- Auroras;
- Meteorological Balloons;
- Radiation Detectors;
- Canada;
- Light (Visible Radiation);
- Photometers;
- X Rays;
- Geophysics