Abstract
During the 2008 total solar eclipse, the coronal emission lines were observed by using optical fibre spectrometric and polarization imaging system in near infrared waveband. The profiles of the coronal emission lines including Fe XIII 10747 Å, 10798 Å and He I 10830 Å were obtained with dispersion of 0.5 Å /pix. The intensity of Fe XIII 10747 Å remained unchanged in the two different coronal regions while the intensity of He I 10830 Å varied considerably in the two coronal locations no matter whether the prominence appeared or not. The coronal polarization images were observed at Fe XI 7892 Å with a bandpass of 30 Å in a series of exposure times.
Similar content being viewed by others
References
Edlén B. Die Deutung der Emissionlinien im Spektrum der Sonnenkorona. Z Astrophys, 1942, 22: 30–46
Lin H, Penn M J, Tomczyk S. A new precise measurement of the coronal magnetic field strength. Astrophys J, 2000, 541: L83–L86
Lin H, Kuhn J R, Coulter R. Coronal magnetic field measurements. Astrophys J, 2004, 613: L177–180
Liu Y, Lin H. Observational test of coronal magnetic field models. I. Comparison with potential field model. Astrophys J, 2008, 680: 1496–1507
Eddy J A, Lee R H, Emerson J D. The λ10747 coronal line at the 1966 eclipse. Sol Phys, 1973, 30: 351–369
Kuhn J R, Penn M J, Mann I. The near-infrared cornal spectrum. Astrophys J, 1996, 456: L67–L70
Habbal S R, Arndt M B, Nayfeh M H, et al. On the detection of the signature of silicon nanoparticle dust grains in the coronal holes. Astrophys J, 2003, 592: L87–L90
Chevalier R A, Lambert D L. The excitation of the forbidden coronal lines. Sol Phys, 1969, 10: 115–134
Flower D R. Pineau des Forêts Excitation of the Fe XIII spectrum in the solar corona. Astron Astrophys, 1973, 24: 181–192
Penn M J, Kuhn J R, Arnaud J, et al. Coronal electron density measurement using the near-IR [FE XIII] emission lines. Space Sci Rev, 2004, 70: 185–188
Lagg A. Recent advances in measuring chromospheric magnetic fields in the He I 10830 Å line. Adv Space Res, 2007, 39: 1734–1740
Mann I, Kuhn J R, Penn M J. Infrared spectroscopic observations of neutral Helium during the 1994 eclipse. In: Gustafson B A S, Hanner M S, eds. Proceedings of the 150th colloquium of the International Astronomical Union held in Gainesville, Florida, U.S.A. 1996, 104: 345–348
Liu Y. The coronal magnetic field reversal observed by the SOLARC instrument. Sci China Ser G-Phys Mech Astron, 2009, 52: 1696–1701
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by the National Natural Science Foundation of China (Grant No. 10843003)
Rights and permissions
About this article
Cite this article
Bao, X., Zhang, Z., Deng, J. et al. Near infrared spectral and polarization imaging observation of coronal emission lines during the 2008 total solar eclipse. Sci. China Ser. G-Phys. Mech. Astron. 52, 1794–1798 (2009). https://doi.org/10.1007/s11433-009-0235-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11433-009-0235-6