RX J1131-1231 (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "RX J1131-1231" in Spanish language version.

refsWebsite

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harvard.edu

chandra.harvard.edu

«Chandra & XMM-Newton Provide Diretc Measurement of Distant Black Hole´s Spin».

nasa.gov

«Distant Quasar RX J1131-1231». Consultado el 5 de marzo de 2014.

space.com

«Monster Black Hole Spins at Half the Speed of Light». Consultado el 5 de marzo de 2014.