ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] The quasar PKS0558 - 504 (z = 0.137, V = 15.0) was identified optically on the basis of X-ray positions from the HEAO-1 survey2. The X-ray spectrum is remarkably steep, with an energy index ax=1.31 (Sxoc E~a*, where 5X is the radiation flux per energy interval, and E is the photon energy) of ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/350589a0
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