ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] Rieke et al.1'2 recently detected several objects at 2.2 jxm in optically blank fields of flat spectrum radio sources3 4, and derived such large IR/optical spectral indices (a = -d In flux density/d In frequency) aKB 3 that they proposed a new class of quasar, because other properties of the ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/292814a0
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