Observando la cromosfera solar en el infrarrojo

TL;DR

This paper reviews the potential of infrared observations for studying the solar chromosphere, highlighting existing ground-based instruments in Argentina and their prospects for international collaboration.

Contribution

It provides a comprehensive overview of infrared chromospheric studies and details the capabilities of Argentine telescopes for future research.

Findings

Infrared observations of the chromosphere are scarce but promising.

Argentina hosts unique telescopes suitable for chromospheric IR studies.

International cooperation is anticipated to advance this research field.

Abstract

The solar chromosphere has historically been studied from spectral lines in the visible and UV, notably H{\alpha}, Ca ii, Mg ii and Ly{\alpha}. Observations at long UV wavelengths (304, 1600 and 1700 {\AA}) from space have been recently added. However, the chromosphere can also be studied in the infrared (IR), both in the continuum as in the lines. Studies in this spectral band, which by definition extends from 1 {\mu}m to 1 mm, are scarce and recent, and its advantages having been little explored. In this work we present a review of what has been done and detail how much can be done with ground-based instruments. Argentina has a set of unique telescopes for the observation of the chromosphere, some with more than 20 years of operation and in process of renovation, others recently installed and still some in development. The panorama is very encouraging and allows to anticipate a strong international cooperation with other ground and space facilities.