6533b820fe1ef96bd127a29b
RESEARCH PRODUCT
Coronal magnetograms of solar active regions
D. A. BezrukovG. B. GelfreikhV. P. MaksimovB. I. RyabovV. M. BogodT. P. BorisevichN. G. PeterovaF. DragoB. I. Lubyshevsubject
PhysicsRadio telescopeElectron densityWavelengthMagnetogramSpace and Planetary ScienceCoronal planeAstronomyAstronomy and AstrophysicsCoronal loopCoronaMicrowavedescription
A series of coronal magnetograms, related to the active region NOAA 9068 is derived using the effects of the quasi-transverse (QT-) propagation at microwaves. In the assumption that the product of the electron density N and the scale of magnetic divergence Ld is constant and equal to 10 18 cm −2 , the sensitivity of the measurements peaks at B(G) ≈ 180 λ −4/3 (cm), where λ is the observational wavelength. The radio maps of the Sun taken with the Solar Siberian Radio Telescope (SSRT) at λ =5 .2 cm were sampled and converted into the 2D coronal magnetograms supplying absolute values of the total magnetic vector � B in the range 10 - 30 G. Each coronal magnetogram covers the portion of the microwave source in the active region affected by the QT-propagation conditions in the corona.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-06-01 | Proceedings of the International Astronomical Union |