The gravitationalenergy of electrons transforms into radiation in burst phase through bremsstrahlung of electrons.
电子的引力能通过电子的轫致辐射转化为爆发相的辐射能。
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The conclusion runs counter to the alternate theory that the gas lights up as it cools to release gravitationalenergy--with no black holes in the picture.
Anyone who can follow their closing paragraphs on the relation between negative gravitationalenergy and the creation of the universe probably knows it all already.