Zobrazeno 1 - 10
of 317
pro vyhledávání: '"Nagendra, K. N."'
Angle-frequency coupling in scattering of polarized light on atoms is represented by the angle-dependent (AD) partial frequency redistribution (PRD) matrices. There are several lines in the linearly polarized solar spectrum, for which PRD combined wi
Externí odkaz:
http://arxiv.org/abs/2007.04044
Publikováno v:
Proceedings of the 9th Solar Polarization Workshop SPW9, Published open access by MPS 2020
In the present paper we consider the problem of resonance line polarization formed in the spherically symmetric expanding atmospheres. For the solution of the concerned polarized transfer equation we use the comoving frame formulation, and apply the
Externí odkaz:
http://arxiv.org/abs/2001.06201
Publikováno v:
2019, The Astrophysical Journal, 883, 188 (11 pages)
Quantum interference effects together with partial frequency redistribution (PFR) in line scattering produce subtle signatures in the so called Second Solar Spectrum (the linearly polarized spectrum of the Sun). These signatures are modified in the p
Externí odkaz:
http://arxiv.org/abs/1910.10913
Interference between magnetic substates of the hyperfine structure states belonging to different fine structure states of the same term influences the polarization for some of the diagnostically important lines of the Sun's spectrum, like the sodium
Externí odkaz:
http://arxiv.org/abs/1512.07736
$F$-state interference significantly modifies the polarization produced by scattering processes in the solar atmosphere. Its signature in the emergent Stokes spectrum in the absence of magnetic fields is depolarization in the line core. In the presen
Externí odkaz:
http://arxiv.org/abs/1512.07731
Blend lines form an integral part of the theoretical analysis and modeling of the polarized spectrum of the Sun. Their interaction with other spectral lines needs to be explored and understood before we can properly use the main spectral lines to dia
Externí odkaz:
http://arxiv.org/abs/1512.07728
The Ba II D2 line at 4554 A is a good example, where the F-state interference effects due to the odd isotopes produce polarization profiles, which are very different from those of the even isotopes that do not exhibit F-state interference. It is ther
Externí odkaz:
http://arxiv.org/abs/1409.0465
The Sc II 4247 A line formed in the chromosphere is one of the lines well known, like the Na I D_2 and Ba II D_2, for its prominent triple peak structure in Q/I and the underlying quantum interference effects governing it. In this paper, we try to st
Externí odkaz:
http://arxiv.org/abs/1408.4247
Oxygen is the most abundant element on the Sun after Hydrogen and Helium. The intensity spectrum of resonance lines of neutral Oxygen namely O {\sc i} (1302, 1305 and 1306 \AA\,) has been studied in the literature for chromospheric diagnostics. In th
Externí odkaz:
http://arxiv.org/abs/1407.8456