Banerjee, D. ; O'Shea, E. ; Doyle, J. G. ; Goossens, M. (2001) Signatures of very long period waves in the polar coronal holes Astronomy & Astrophysics, 380 (2). L39-L42. ISSN 0004-6361
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Official URL: http://doi.org/10.1051/0004-6361:20011548
Related URL: http://dx.doi.org/10.1051/0004-6361:20011548
Abstract
We examine long spectral time series of a coronal hole observed on the 7th March 2000 with the Coronal Diagnostic Spectrometer (CDS) on-board SoHO. The observations were obtained in the chromospheric He i, and a series of higher temperature oxygen lines. In this letter we report on the presence of long period oscillations in a polar coronal hole region on the disk. Our observations indicate the presence of compressional waves with periods of 20-30 min or longer.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Privacy Policy. |
| Keywords: | Sun: Corona; Ultraviolet: Solar System; Sun: Oscillations. |
| ID Code: | 115731 |
| Deposited On: | 18 Mar 2021 05:13 |
| Last Modified: | 18 Mar 2021 05:13 |
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