By this time, cloud chamber observations had clarified the nature of the hard component.
2.
From January 9-August 14, 1991, the spectrum had a strong hard component extending up to < " 300 keV.
3.
Its X-ray spectrum is dominated by a soft component but there is also a hard component above 3 keV ( a hard tail ).
4.
Crabs are arthropods whose carapace is made of a mineralized hard component ( which exhibits brittle fracture ) and a softer organic component composed primarily of chitin.
5.
If this were the only process, the intensity of the hard component passing through a layer of solid material would decrease by the same amount as in an equivalent layer of air.
6.
ROSAT measurements showed a log " L " x / " L " bol C " 5.93 for the range 0.1-2.4 keV . The hard component of the X-ray spectrum from ? Sco as studied with XMM-Newton supports the presence of in-falling clumps of plasma in ? Sco.
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