Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-06-21T03:06:47.414Z Has data issue: false hasContentIssue false
  • English
  • Français

Intraday Variability Statistics in Radio-Selected and X-Ray Selected BL Lac Objects Implications for Unified schemes

Published online by Cambridge University Press:  25 May 2016

J. Heidt
J. Heidt*
Affiliation:
Landessternwarte, Königstuhl, 69117 Heidelberg, Germany

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

BL Lac objects, characterized by their high variability across the electromagnetic spectrum, strong and variable polarization in the radio and optical domain and a (nearly) featureless continuum can in general be divided into the radio-selected (RBL) and X-ray selected BL Lac objects (XBL) according to their αro – αox spectral indices (Stocke et al., 1985). Attempts to unify both classes within a single model have been suggested e.g. by Ghisellini et al. (1993) or Giommi et al. (1994).

Type
Relation between Radio and Other Wavelenghts
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 246 - 247
Copyright
Copyright © Kluwer 1996 

References

Ghisellini, G. et al.: 1993, ApJ 407, 65 Google Scholar
Giommi, P. & Padovani, P.: 1994, MNRAS 268, L51 Google Scholar
Giommi, P., et al.: 1991, ApJ 378, 77 Google Scholar
Morris, S.L., et al.: 1991, ApJ 380, 49 Google Scholar
Stickel, M., et al.: 1991 ApJ 374, 431 Google Scholar
Stocke, J.T. et al.: 1985, ApJ 298, 619 Google Scholar