Binary Black Hole System
The x-ray source at the core of NGC 300 is designated NGC 300 X-1. Astronomers speculate that NGC 300 X-1 is a new kind of Wolf-Rayet black hole binary system similar to the confirmed such system IC 10 X-1. Their shared properties include an orbital period of ~30 hours and x-ray brightness of ~1×1038 ergs.
Read more about this topic: NGC 300
Famous quotes containing the words black, hole and/or system:
“... the black woman can never forget—however lukewarm the party may to-day appear—that it was a Republican president who struck the manacles from her own wrists and gave the possibilities of manhood to her helpless little ones; and to her mind the Democratic Negro is a traitor and a time-server.”
—Anna Julia Cooper (1859–1964)
“Give a beggar a dime and he’ll bless you. Give him a dollar and he’ll curse you for witholding the rest of your fortune. Poverty is a bag with a hole at the bottom.”
—Anzia Yezierska (c. 1881–1970)
“The genius of any slave system is found in the dynamics which isolate slaves from each other, obscure the reality of a common condition, and make united rebellion against the oppressor inconceivable.”
—Andrea Dworkin (b. 1946)