X-Ray Spectra of BL Lacertae Objects from the ROSAT Archive
- 1 January 1996
- journal article
- relation between-radio-and-other-wavelenghts
- Published by Cambridge University Press (CUP) in Symposium - International Astronomical Union
- Vol. 175, 265-266
- https://doi.org/10.1017/s007418090008075x
Abstract
Our sample comprises all BL Lac objects listed in the catalogue of Véron-Cetty & Véron (1993) and which are detected in a ROSAT PSPC observation with at least 50 source counts: 74 objects in total. We reduced the data from the ROSAT archives at MPE and GSFC and fitted single power-law models with photoelectric absorption to the spectra. We calculated the broad band spectral indices αrx, αro, and αox from the ROSAT 1 keV fluxes, 5 GHz radio, and optical V band fluxes (Véron-Cetty & Véron 1993).Keywords
This publication has 4 references indexed in Scilit:
- The connection between x-ray- and radio-selected BL Lacertae objectsThe Astrophysical Journal, 1995
- Unified Model for X-Ray-- and Radio-selected BL Lacertae ObjectsThe Astrophysical Journal, 1993
- The luminosity function and cosmological evolution of X-ray-selected BL Lacertae objectsThe Astrophysical Journal, 1991
- Bulk acceleration in relativistic jets and the spectral properties of blazarsThe Astrophysical Journal, 1989