IS THERE LIFE IN OUR SOLAR SYSTEM?

S. Bagnulo, Armagh Observatory (UK) – M.F. Sterzik, ESO (Germany) A. Azua, PUC (Chile) - A. Cellino, INAF-Torino (Italy)

B4

PRD effects on polarized lines formed in moving media in the presence of a weak magnetic field

M. Sampoorna and K. N. Nagendra Indian Institute of Astrophysics, Koramangala, Bengaluru, India

• We study the effect of macroscopic vertical velocity fields on the scattering line polarization profiles including the effects of partial frequency redistribution (PRD) and a weak magnetic field (Hanle effect).

• We consider a 1-D planar isothermal atmosphere with velocity field υz along the atmospheric normal.

• We show that the presence of a vertical velocity gradients enhances the linear polarization, produces a Doppler shift, and asymmetric line profiles (see Carlin et al. 2012).

• We show that, AD-PRD effects are important in a moving atmosphere with velocity gradients for both non-magnetic and magnetic cases.

B8

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B16

B21

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B25

B25-p2

B25-p3

B25-p4