Instrumentação e caracterização do Radiotelescópio Uirapuru: os sinais captados por uma corneta do BINGO.

Abstract

With the construction of the BINGO radio telescope, acronym for (Baryon Acoustic Oscillations from Neutral Gas Observations), it will be possible to detect, for the first time, the baryon acoustic oscillations, the English Baryon Acoustic Oscillations (BAO), through its monitoring through electromagnetic emissions and radio frequency of atomic hydrogen. In this way, BAO will serve as a standard ruler to understand the distribution of galaxies after the Big Bang.BINGO will work in the band from 980 MHz to 1260 MHz, carrying out measurements of the radio signals emitted by the radio telescope, requiring a radio frequency interference (RFI) as low as possible for better analysis of the captured signals. The Uirapuru radio telescope, which will serve as a test to receive the signals in the radio range coming from space, will use a BINGO horn developed by INPE, and receivers that are capable of amplifying very weak signals that, when passing through the amplified and being filtered, the signals are processed and converted to be recorded in data processing systems, making it possible to perform their analysis.Radio telescopes use receivers similar to AM-FM radios and free-to-air televisions, which receive signals from space and information is collected through satellite dishes. In the case of Uirapuru, the receivers are made up of a chain of equipment, such as: Low Noise Amplifiers (LNA), isolators and bandpass filters, with the aim of capturing the signals, amplifying them and process them. In this work, measurements and tests were carried out on the receiver and, mainly, on the LNA’s, which will be integrated into the Uirapuru radio telescope, comparisons of data from the amplifiers through measurements made in the UFCG’s LABMET with the factory values.