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Discovery of Short-Timescale Oscillations in the Transition Region by CLASP
- Publication Year :
- 2017
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 2017.
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Abstract
- High cadence spectroscopic observations by CLASP reveal that intensity fluctuations of blue and red peaks of the hydrogen Lyman-alpha line (121.57 nm) recurrently appear in the quiet Sun at short timescale. The intensity fluctuations of the blue and red peaks are opposite in phase to each other: the blue peak is enhanced during the decease of the red peak, and vice versa. Similar intensity fluctuations also can be seen in Mg II h & k profiles observed with IRIS. It is suggested that the short-timescale oscillatory or torsional phenomena take place in the transition region or the upper chromosphere.
- Subjects :
- Solar Physics
Subjects
Details
- Language :
- English
- Database :
- NASA Technical Reports
- Notes :
- NNG10WA17C
- Publication Type :
- Report
- Accession number :
- edsnas.20170005240
- Document Type :
- Report