Presentation Type
Poster
Presentation Type
Submission
Department
Physics
Major
Physics
Abstract
Changes in the interplanetary magnetic field (IMF) orientation can affect pulsations in the dayside aurora. It has been reported that multiple dayside arcs(Pc 5 band) were replaced by diffuse pulsating aurora (Pc 3-4 band) when the IMF turned northward. Dayside green (557.7 nm emission) pulsating aurora had been reported to occur between 0800 and 1100 MLT (0500-0800 UT) in patches. The pulsations are normally associated with Pc 3-5 range. This statistical study examines pulsating green aurora using ground-based optical data are obtained from the Kjell Henriksen Observatory (KHO) in Longyearbyen, Svalbard (GEO: N, E; AACGM: N, E). All-Sky Camera images are obtained from the Boreal Aurora Camera Constellation (BACC) and intensities are obtained from the meridian scanning photometer data. Oscillations from the pulsating aurora are obtained from the BACC and compared with the magnetic deflections obtained from the IMAGE magnetometer network. The pulsating events are combined with IMF data. The results of the study show that (i) the pulsating green aurora occurs over a large area of the BACC field of view, (ii) the period of oscillations are between 5-10 minutes, (iii) very few events occur past 12 MLT.
Faculty Mentor
Gerard Fasel
Funding Source or Research Program
Summer Undergraduate Research Program
Location
Waves Cafeteria
Start Date
22-3-2024 1:30 PM
End Date
22-3-2024 2:30 PM
Included in
Dayside Pulsating Diffuse Aurora and the Interplanetary Magnetic Field
Waves Cafeteria
Changes in the interplanetary magnetic field (IMF) orientation can affect pulsations in the dayside aurora. It has been reported that multiple dayside arcs(Pc 5 band) were replaced by diffuse pulsating aurora (Pc 3-4 band) when the IMF turned northward. Dayside green (557.7 nm emission) pulsating aurora had been reported to occur between 0800 and 1100 MLT (0500-0800 UT) in patches. The pulsations are normally associated with Pc 3-5 range. This statistical study examines pulsating green aurora using ground-based optical data are obtained from the Kjell Henriksen Observatory (KHO) in Longyearbyen, Svalbard (GEO: N, E; AACGM: N, E). All-Sky Camera images are obtained from the Boreal Aurora Camera Constellation (BACC) and intensities are obtained from the meridian scanning photometer data. Oscillations from the pulsating aurora are obtained from the BACC and compared with the magnetic deflections obtained from the IMAGE magnetometer network. The pulsating events are combined with IMF data. The results of the study show that (i) the pulsating green aurora occurs over a large area of the BACC field of view, (ii) the period of oscillations are between 5-10 minutes, (iii) very few events occur past 12 MLT.