Spectropolarimetric investigation of Ellerman bomb. I. Observations

1Kondrashova, NN
1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2016, 32(1):21-32
Start Page: Solar Physics
Language: Russian

The data of the spectropolarimetric observations of the Ellerman bomb in the active region NOAA 11024 with the French-Italian solar telescope THEMIS (Tenerife, Spain) are used for the analysis of the variations of the Stokes profiles I, Q, U, V of the photospheric lines. The photospheric lines under consideration have different intensities and Lande factors. The photospheric line profiles in the Ellerman bomb spectra differ from the profiles for the quiet photosphere. Stokes profiles I of the photospheric lines in the Ellerman bomb spectra are weaker strongly. Largest values of the Stokes parameters Q, U, V are found for the magnetic sensitive line Fe I λ 630.25 nm. Stokes parameter V is highest in the central region of the Ellerman bomb. Largest values of the parameters Q and U are at one of the edges of the Ellerman bomb. Comparison of the Stokes Q, U, V parameters for the Ellerman bomb and microflares shows that the parameters for the Ellerman bomb are much greater.

Keywords: Ellerman bomb, Stokes parameters, Sun

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