Design and development of a solar radio interferometer of two elements

Abstract. The design and implementation of a two-element solar radio interferometer, and the pertinence of these initiatives for development of the astronomy in Colombia are presented in this the is. The scientific and technical objectives of this thesis were the design and construction of an instrument capable of performing observations of physical phenomena occurring in the Sun, as well as the constant monitoring of space weather through observations of radio emissions. To accomplish this, a log periodic dipole array (LPDA) was selected as the most appropriate type of antenna to detect radio waves in a broad frequency bandwidth (up to 800 MHz) and therefore achieving the main scientific objective of the present work. In order to have a better capability of detection, two LPDAs were set as an interferometric array. The design of this instrument includes a digital signal processing system. The ROACH 1 hardware was programmed and used as the receiver system that generates the radio spectra by using signal correlation techniques. During commissioning, several tests were performed to ensure the correct operation of the First Colombian Solar Radio Interferometer (FiCoRI). The description and results of these tests are presented in this thesis. The combination of different devices and methods used for the detection and processing of the signals compose the First Colombian Solar Radio Interferometer (FiCoRI). The analysis of a solar radio burst observed by FiCoRI and other instruments is also described. Results of the estimated electron velocity generating the observed radio emission are presented. This is the first time that such an analysis has been made with data obtain from a radio astronomical instrument designed and constructed in Colombia. Some ideas and suggestions for future improvements of FiCoRI are also given.

• Autores: Guevara Gómez, Juan Camilo
• Fecha de publicación: 2017
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/60788
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/60788; http://bdigital.unal.edu.co/59121/
• Palabra clave: 5 Ciencias naturales y matemáticas / Science; 52 Astronomía y ciencias afines / Astronomy; 53 Física / Physics; 6 Tecnología (ciencias aplicadas) / Technology; 62 Ingeniería y operaciones afines / Engineering; Radioastronomy; Solar Radio Bursts; Radio Interferometry; Solar radio astronomy; Sun; Radio astronomía; Estallidos solares en radio; Radio interferometría; Sol
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional