Gauribidanur Low-Frequency Solar Spectrograph

Abstract

A new radio spectrograph, dedicated to observe the Sun, has been recently commissioned by the Indian Institute of Astrophysics (IIA) at the Gauribidanur Radio Observatory, about 100 km North of Bangalore. The instrument, called the Gauribidanur Low-frequency Solar Spectrograph (GLOSS), operates in the frequency range≈40 – 440 MHz. Radio emission in this frequency range originates close to the Sun, typically in the radial distance range r ≈1.1 – 2.0 R ⊙ . This article describes the characteristics of the GLOSS and the first results.