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681f5ba3
bvd*mfs}@gmail.com
2015-07-17 14:06
- With stocks trading very near to all time highs, and with the Standard Poor 500 closing at all time highs 33 times so far in 2013, market participants are becoming increasingly jittery. Valuations are very expensive at present, and as the overall level of the market rising, and valuations are extended, the risk of a correction also increases.By the time Swift launched, mounting evidence already pointed to the deaths of massive stars as the source of most long GRBs a scenario that still stands. When such a star runs out of fuel, its core collapses and likely forms a black hole surrounded by a dense hot disk of gas called an accretion disk. Somehow, the black hole diverts part of the infalling matter into a pair of high energy jets that tear through the collapsing star.
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