Cluster-mining: an approach for determining core structures of metallic nanoparticles from atomic pair distribution function data
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99 GENERAL AND MISCELLANEOUS↗
Engineering topics
Jensen, K.
Publications and source records attributed to Jensen, K..
Discovery of a Seyfert 1 galaxy with an unusually soft X-ray spectrum
A newly-discovered Seyfert 1 galaxy, E1615+061, is identified with the bright, soft X-ray source H1613+06. The object possesses a steep X-ray spectrum, an energy index lower than 2.0, and is similar to BL Lac objects' variable soft X-ray components. Such components may be present at times in all compact extragalactic X-ray emitters, and could represent high-luminosity states of the accretion disks around the supermassive black holes that are the underlying power sources. Many of the presently unidentified, bright, soft X-ray sources at high galactic latitudes may fall into the category of these compact extragalactic objects.
Pravdo, S. H.↗