Photoelectric observations of chromospheric sunspot oscillations. V. Penumbral oscillations
Journal Article
·
· Astrophys. J.; (United States)
Observations of penumbral magneto-atmospheric oscillations in which both the spatial and temporal behavior are measured simultaneously in two spectral lines (Fe I 5434 A and Ca II 8498 A) formed at widely separated heights in the atmosphere are analyzed. It is found that no single theoretical model can account for the variations in both strength and orientation of the magnetic field with radial distance from the center of the spot, with height in and below the penumbral photospehre, and on small spatial scales (penumbral filamentation). 29 references.
- Research Organization:
- High Altitude Observatory, Boulder, CO (USA)
- OSTI ID:
- 6438721
- Journal Information:
- Astrophys. J.; (United States), Vol. 334
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photoelectric observations of chromospheric sunspot oscillations. II. Propagation chracteristics
TRANSITION-REGION/CORONAL SIGNATURES AND MAGNETIC SETTING OF SUNSPOT PENUMBRAL JETS: HINODE (SOT/FG), Hi-C, AND SDO/AIA OBSERVATIONS
Photoelectric observations of propagating sunspot oscillations
Journal Article
·
Wed Feb 15 00:00:00 EST 1984
· Astrophys. J.; (United States)
·
OSTI ID:6438721
TRANSITION-REGION/CORONAL SIGNATURES AND MAGNETIC SETTING OF SUNSPOT PENUMBRAL JETS: HINODE (SOT/FG), Hi-C, AND SDO/AIA OBSERVATIONS
Journal Article
·
Sun Jan 10 00:00:00 EST 2016
· Astrophysical Journal
·
OSTI ID:6438721
Photoelectric observations of propagating sunspot oscillations
Journal Article
·
Mon Feb 01 00:00:00 EST 1982
· Astrophys. J.; (United States)
·
OSTI ID:6438721