CLASS B0445+123: a new two-image gravitational lens system
MetadataShow full item record
A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey. Radio observations with the Very Large Array (VLA), the Multi Element Radio Linked Interferometer Network and the Very Long Baseline Array at increasingly higher resolutions all show two components with a flux density ratio of ~7 : 1 and a separation of 1.34 arcsec. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8.4 GHz show evidence of a feature to the south-east of the brighter component and a corresponding extension of the weaker component to the northwest. Optical observations with the William Herschel Telescope show ~1.7-arcsec extended emission aligned in approximately the same direction as the separation between the radio components with an R-band magnitude of 21.8 ± 0.4.
Showing items related by title, author, creator and subject.
Talevski, Alex; Wongthongtham, Pornpit; Komchaliaw, Surasak (2008)Research has shown that component-based software engineering leads to software that exhibits higher quality, shorter time-tomarket and therefore, lower development cost. However, the development of component-based systems ...
Warton, Benjamin (1999)This thesis reports the results of investigations carried out into the composition of the saturate and aromatic unresolved complex mixtures (UCMs) in crude oils. It is divided into two sections. Section A reports on studies ...
Liu, Lifang; Feizi, A.; Österlund, T.; Hjort, C.; Nielsen, J. (2014)Background: The koji mold, Aspergillus oryzae is widely used for the production of industrial enzymes due to its particularly high protein secretion capacity and ability to perform post-translational modifications. However, ...