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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.39 [2010] >
IJRSP Vol.39(5) [October 2010] >
| Title: | Solar Vector Magnetograph: Instrument status and vector field measurements of non-flaring solar active regions |
| Authors: | Gosain, Sanjay
Venkatakrishnan, P |
| Keywords: | Solar vector magnetic field
Solar Vector Magnetograph
Polarimetric calibrations
Flaring active region |
| Issue Date: | Oct-2010 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 96.60.Hv; 96.60.qe |
| Abstract: | The
Solar Vector Magnetograph (SVM) of Udaipur Solar Observatory (USO) is an
imaging polarimeter based on a tunable Fabry-Perot filter. In the present
paper, the development efforts during phase-II of this instrument have been
presented. These include: (i) installation of the instrument on a new robotic
mount at the island site of USO; (ii) polarimetric calibrations of the
instrument; and (iii) development of tools for performing data reduction and Stokes
inversion. In particular, the Milne-Eddington inversion of polarized line
profiles of the entire active region using parallel computing concept is
described. Finally, few preliminary results regarding the vector magnetic field
and other activity parameters of sunspots in non-flaring solar active regions
are discussed. Such observations serve as a reference for comparison with
flaring active regions. |
| Page(s): | 319-324 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.39(5) [October 2010]
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