Abstract Details
| Name: Sajal Kumar Dhara Affiliation: Istituto Ricerche Solari Locarno, Switzerland Conference ID: ASI2018_1742 Title : Narrow-band imaging spectropolarimetric observation of active region at Fe I 6173Ã… Authors and Co-Authors : Emilia Capozzi, Michele Bianda, Renzo Ramelli Istituto Ricerche Solari Locarno, Switzerland Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : Narrow-band spectropolarimetry is often used to obtain information about the magnetic field structure of the solar atmosphere. Here we present a study of a magnetic field measurement using the imaging spectroplarimeter at Istituto Ricerche Solari Locarno (IRSOL). The imaging spectropolarimeter comprises a tunable narrow band filter, based on two LiNbO3 Fabry-Parot etalons, and Zurich IMaging POLarimeter (ZIMPOL) coupled with a high-resolution grating Czerny-Turner spectrograph. With this instrumental set up, one can carry out imaging spectropolarimetry of any spectral line from 390 to 700 nm, with a spectral resolution of ~30 mÃ… at 630 nm. A set of monochromatic images of active region (AR) in a scan of spectral line Fe I 6173Ã… is obtained. We used ZIMPOL to measure the full Stokes vectors for every pixel of the monochromatic images. The map of the Stokes profiles of an AR has been compared with the data obtained with HMI/SDO. Here we will present the details about the obtained results from our measurements. |