How to Find BL Lac Objects in the Rass

Conference paper
Part of the International Astronomical Union/Union Astronomique Internationale book series (IAUS, volume 179)

Abstract

The correlation of an X-ray survey like the ROSAT All-Sky Survey (RASS) with optical surveys like the Hamburg Quasar Survey (HQS) can significantly increase the number of known BL Lac objects.

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References

  1. Nass P., Bade, N., Kollgaard, R. I. et al., 1996, Astron.Astrophys., 309,419ADSGoogle Scholar

Copyright information

© IAU 1997

Authors and Affiliations

  • P. Nass
    • 1
  1. 1.Max-Planck-Institut für Extraterrestrische PhysikGermany

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