Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005chjaa...5..273n&link_type=abstract
Chinese Journal of Astronomy and Astrophysics, Volume 5, Issue 3, pp. 273-284 (2005).
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
We analyze oscillation behaviours in chromospheric internetwork regions using spectral observations of the CII 1334 Å line obtained with the Solar Ultraviolet Measurements of Emitted Radiation spectrograph (SUMER) aboard Solar and Heliospheric Observatory (SOHO). Three areas, 26×120arcsec2 each, at the various latitudes from the disk center to the north polar coronal hole, were rastered with a cadence of about 40 60 s in the solar minimum year. We obtained the time evolution of two-dimensional (2D) line intensity, continuum and line core shift. The continuum and the line shift show ~3 min chromospheric oscillations in the internetwork regions underlying the coronal hole as well as at the disk center. We find that the CII 1334 Å line shift oscillates with an average speed of ~1.7km-1, independent of the latitude, while its coherent scale decreases with latitude. On the other hand, the oscillation amplitude of the continuum around the 1334 Å and the phase delay between the Doppler shift and continuum slightly increase with latitude.
Ming-DeDing
Ning Zong-Jun
No associations
LandOfFree
Chromospheric Internetwork Oscillations at Various Locations of the Quiet Sun does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chromospheric Internetwork Oscillations at Various Locations of the Quiet Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromospheric Internetwork Oscillations at Various Locations of the Quiet Sun will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-871673