Zeeman-Doppler imaging of solar-type and AP stars. IV - Maximum entropy reconstruction of 2D magnetic topologies

Details Zeeman-Doppler imaging of solar-type and AP stars. IV - Maximum entropy reconstruction of 2D magnetic topologies Zeeman-Doppler imaging of solar-type and AP stars. IV - Maximum entropy reconstruction of 2D magnetic topologies

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...250..463b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 250, no. 2, Oct. 1991, p. 463-474.

Astronomy and Astrophysics

Astrophysics

88

A Stars, Doppler Effect, Maximum Entropy Method, Peculiar Stars, Topology, Zeeman Effect, Circular Polarization, Imaging Techniques, Late Stars, Stellar Magnetic Fields

Scientific paper

Recently Semel (1989) introduced the technique of Zeeman-Doppler Imaging (ZDI) which essentially consists of Doppler Imaging using the Stokes V (circular polarization) profile. A code which uses maximum entropy principles to recover the distribution of brightness, abundance, and magnetic fields across the surface of stars is presented. For brightness and abundance mappings, the code is found to produce results comparable to those found in the literature. The first reconstructions of magnetic test structures from the Stokes V parameter alone show that this quantity contains enough spatial information to recover spotted images but not dipolar ones. According to the magnetic topologies that may be expected in solar-type or Ap stars, it is concluded that ZDI may be well adapted in deriving magnetic maps of active RS CVn systems, while it is anticipated that the use of the two other Stokes parameters (linear polarizations) are needed to derive reliable results for Ap stars.

Affiliated with

Also associated with

No associations

Rating

Zeeman-Doppler imaging of solar-type and AP stars. IV - Maximum entropy reconstruction of 2D magnetic topologies 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 Zeeman-Doppler imaging of solar-type and AP stars. IV - Maximum entropy reconstruction of 2D magnetic topologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zeeman-Doppler imaging of solar-type and AP stars. IV - Maximum entropy reconstruction of 2D magnetic topologies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1874615