Optical variability of PKS0048-097

Details Optical variability of PKS0048-097 Optical variability of PKS0048-097

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.252..365u&link_type=abstract

Nature, Volume 252, Issue 5482, pp. 365 (1974).

Computer Science

12

Scientific paper

HOSKINS et al.1 have identified the Parkes radio source 0048-097 with a neutral stellar object of 17 mag, and Carswell et al.2 have shown that, in common with the BL Lacertae class of quasistellar object (BL Lacertids) it has a featureless optical spectrum, that it is a rapid radio variable at high frequencies3-6 and that it has a radio spectrum similar to BL Lacertae3. (The name `Lacertid' has been suggested7 for this class, but this invites confusion with meteor showers.) To complete the identification of PKS0048-097, we have investigated two further characteristics of the BL Lacertids: the rapidity of the optical variability; and the total range of optical variability and its correlation with the decimetric spectral index8.

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