3 papers
astro-ph.SR2017
Inference of chromospheric magnetic fields in a sunspot derived from spectropolarimetry of Ca II 8542 A
Ali G. A. Abdelkawy, Abdelrazek M. K. Shaltout, M. M. Beheary +1
We analyze spectropolarimetric observations of the chromospheric Ca II 8542 A line taken by the Interferometric Bidimensional Spectrometer (IBIS) at the Dunn Solar Telescope. The d…
astro-ph.SR2017
The chromospheric magnetic field in active regions derived from spectropolarimetry of Ca II 8542
Ali G. A. Abdelkawy, Abdelrazek M. K. Shaltout, M. M. Beheary
We analyze spectropolarimetric observations of the chromospheric Ca II 8542 line taken by the Interferometric Bidimensional Spectrometer (IBIS) at the Dunn Solar Telescope and phot…
astro-ph.SR2017
The LTE solar abundance of neodymium
A. G. A. Abdelkawy, Abdelrazek M. K. Shaltout, M. M. Beheary +1
We study the solar photospheric abundance of singly ionized neodymium (Nd II) using high resolution spectroscopic data obtained by Fourier transform spectrograph (FTS). Based on th…