Skip to main content
SpringerLink
Log in

High-resolution measurements of photosphere and sunspot velocity and magnetic fields using a narrow-band birefringent filter

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

Modifications to a Zeiss 1/4 Å filter are described which allow high spatial resolution observations of the line-of-sight velocities and magnetic fields in the photosphere and in sunspots. First results show: (1) the granular velocity field to be very strong; differences in upward motions in the granules and downward motions in between are as much as 6 km/sec; (2) the Evershed effect in sunspots to originate primarily in the dark regions between bright penumbral filaments.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Beckers, J.M.: 1966a, Proceedings of the Sunspot Symposium, G. Barbera, Florence, p. 186.

    Google Scholar 

  • Beckers, J.M.: 1966b, Anacapri Symposium, on the Fine Structure of the Solar Atmosphere, F. Steiner, Wiesbaden, p. 56.

    Google Scholar 

  • Beckers, J. M. and Schröter, E. H.: 1966, Boulder Solar A.A.S. Symposium.

  • Beckers, J.M. and Schröter, E.H.: 1967, Budapest IAU Symposium on Solar Activity.

  • Bhavilai, Rawi: 1965, Monthly Notices Roy. Astron. Soc. 130, 411.

    Google Scholar 

  • Danielson, R.: 1964, Astrophys. J. 139, 45.

    Google Scholar 

  • Frazier, E. N.: 1967, Thesis, University of California, Berkeley.

    Google Scholar 

  • Leighton, R. B., Noyes, R. W., and Simon, G. W.: 1962, Astrophys. J. 138, 252.

    Google Scholar 

  • Noyes, R. W.: 1967, Proceedings of the IAU Symposium No. 28 (Nice), p. 293.

  • Schröter, E.H.: 1966, Proceedings of the Sunspot Symposium, G. Barbera, Florence, p. 190.

    Google Scholar 

  • Steel, W. H. Smartt, R. N., and Giovanelli, R. G.: 1961, Australian J. Phys. 14, 20.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Sacramento Peak Observatory, Air Force Cambridge Research Laboratories, Sunspot, N.M., U.S.A.

    J. M. Beckers

Authors
  1. J. M. Beckers
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Beckers, J.M. High-resolution measurements of photosphere and sunspot velocity and magnetic fields using a narrow-band birefringent filter. Sol Phys 3, 258–268 (1968). https://doi.org/10.1007/BF00155161

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00155161

Keywords

Search

Navigation