Listar Ciencias Exactas y Naturales por tema "X-rays: diuse background"
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The obscuring starburst of NGC 6221 and implications for the hard x-ray background
(2001) [Artículo de periódico]We present NGC 6221 as a case study of "X-ray-loud composite galaxies", which appear similar to starbursts at optical wavelengths and resemble traditional active galactic nuclei in X-rays. The net optical spectrum of NGC ...