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The sungrazing comets, that pass extremely close to the Sun, are rare, but are of considerable scientific interest due to their unusual polarimetric properties. This paper is devoted to the interpretation of polarimetric observational data from comet Ikeya‐Seki (C/1965 S1), also known as the “Big Comet of 1965.” The data of polarimetric observations of this comet at a wavelength of 0.53 μm are sharply...
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