Astrophysics Source Code Library

Making codes discoverable since 1999

SIR: Stokes Inversion based on Response functions

Discussion topics for individual codes
User avatar
Guardian of the Codes
Posts: 1078
Joined: Wed Aug 04, 2004 4:18 pm
Location: Washington, DC

SIR: Stokes Inversion based on Response functions

Postby owlice » Mon Dec 17, 2012 7:21 am

SIR: Stokes Inversion based on Response functions

Abstract: SIR is a general-purpose code capable of dealing with gradients of the physical quantities with height. It admits one and two-component model atmospheres. It allows the recovery of the stratification of the temperature, the magnetic field vector, and the line of sight velocity through the atmosphere, and the micro- and macroturbulence velocities - which are assumed to be constant with depth. It is based on the response functions, which enter a Marquardt nonlinear least-squares algorithm in a natural way. Response functions are calculated at the same time as the full radiative transfer equation for polarized light is integrated, which determines values of many free parameters in a reasonable computation time. SIR demonstrates high stability, accuracy, and uniqueness of results, even when simulated observations present signal-to-noise ratios of the order of the lowest acceptable values in real observations.

Credit: Ruiz Cobo, B.; del Toro Iniesta, J. C.


Bibcode: 2012ascl.soft12008R

ID: ascl:1212.008
Last edited by Ada Coda on Fri Aug 10, 2018 10:56 pm, edited 1 time in total.
Reason: Updated code entry.
Code-seeking owl at your service

Return to “Astrophysics Source Code Library”

Who is online

Users browsing this forum: No registered users and 2 guests