Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990rmxaa..21..155f&link_type=abstract
Revista Mexicana de Astronomia y Astrofisica, 21, 155 (1990)
Astronomy and Astrophysics
Astronomy
Scientific paper
ABSTRACT. This work consists in the study of the variability of the nucleus of the peculiar galaxy NGC 5128 (Centaurus A) at the radio continuum frequency of 43 GHz. The data were obtained with the 13.7 m itapetinga Radiotelescope. The radio source presents a pair of inner radio lobes and a compact variable nucleus. The observational technique used was scans through the inner radio lobes and the nucleus. The quasi- simultaneous measurements of the flux density of each source allowed us to derive accurately the relative flux between them, and to obtain the real variability of the nucleus. RESUMO. Este trabalho consiste no estudo da variabilidade do nucleo da galaxia peculiar NGC 5128 (Centaurus A) no de radio na de 43 GHz. Os dados foram obtidos com 0 Radiotelescopio do Itapetinga. A radio fonte apresenta um par de lobulos internos e um nucleo compacto variavel. A tetnica observacional utilizada foi a de varreduras passando pelos lobulos e pelo nucleo. As medidas quase simultaneas da densidade de fluxo de cada fonte permitiu obter precisa- mente 0 fluxo relativo entre elas e a variabilidade real do nucleo. Keq woit : GALAXIES-RADIO
Abraham Zulema
Fernandes de Mello Rabaca D.
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