Abstract
Scattering polarization from the photosphere observed close to the solar limb has recently become of interest to study turbulent magnetic fields, abundances, and radiative transfer effects. We extend these studies by measuring the scattering polarization off the limb, i.e. in the chromosphere. However, instrumental effects are much more pronounced and more complicated than those affecting on-disk measurements. In particular, scattered light from the telescope mirrors leads to a new type of instrumental polarization that we describe in detail. The differences between the linearly polarized spectra on the disk and off the limb are often very substantial. Here we show the profiles of Hei D3, the OI triplet at 777 nm, and the Nai D lines. The change in the latter is in reasonable agreement with the recent modeling efforts of atomic polarization in the lower level by Landi Degl’Innocenti (1998).
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Beckers, J.M.: 1974, Solar Phys. 37, 351
Harvey, J.E., Vernold, C.L.: 1997,SPIE Proceedings 3141, 113
Keller, C.U.: 1996, in J.O. Stenflo, K.N. Nagendra (eds.), Solar Polarization, Proc. 1st SPW, Kluwer, Dordrecht, p. 243 (also Solar Phys. 164, 243)
Landi Degl’Innocenti, E.: 1998, Nature 392, 256
Pierce, A.K.: 1968, Astrophys. J. Suppl. Ser. 17, 1
Pierce, A.K.: 1991,Solar Phys. 133, 215
Stenflo, J.O.: 1994, Solar Magnetic Fields, Kluwer Academic Publishers, Dordrecht, The Netherlands
Stenflo, J.O., Keller, C.U.: 1996, Nature 382, 588
Stenflo, J.O., Keller, C.U.: 1997, Astron. Astrophys. 321, 927
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1999 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Keller, C.U., Sheeley, N.R. (1999). Scattering Polarization in the Chromosphere. In: Nagendra, K.N., Stenflo, J.O. (eds) Solar Polarization. Astrophysics and Space Science Library, vol 243. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9329-8_2
Download citation
DOI: https://doi.org/10.1007/978-94-015-9329-8_2
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5261-2
Online ISBN: 978-94-015-9329-8
eBook Packages: Springer Book Archive