Detecting Magnetic Fields in Exoplanets with Spectropolarimetry of the Helium Line at 1083 nm

Published in The Astrophysical Journal, 2020

We proposed a new method for detecting magnetic fields in exoplanets based on existing methods used by the solar physics community. The method in question is based on the meta-stable He 1083 nm transition line. We show that in the conditions in the escaping atmospheres of close-in exoplanets, metastable helium atoms should be optically pumped by the starlight, and depending of the strenght of the magnetic field, they should align with the magnetic field. This results in linearly polarized absorption at 1083 nm that traces the field direction.

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Impact of inhomogeneous reionization in the Lyman-alpha forest

Published in Monthly Notices of the Royal Astronomical Society, 2019

We study the impact of patchy reionization in the Lyman-alpha forest. We find a considerably strong effect in the 3D Lya forest power spectra even at low redshifts (z = 2). Also, we analyzed the possibility of using the quadrupole of the 21cm power spectra to mitigate this signal.

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Slowly rotating curzon-chazy metric

Published in Revista de Matemática: Teoría y Aplicaciones, 2015

We added slow rotation to the Chazy-Curzon metric, which is capable of describing a non-point like object. This slowly rotating metric is also a Kerr-like metric.

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Approximate metric for a rotating deformed mass

Published in International Journal of Astronomy and Astrophysics, 2015

The Kerr metric presents complications when trying to match it to a real physical interior solution. As a mathematical exercise we generated a ‘squashed’ Kerr-like metric that in principle should be easier to match with a physical interior.

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