ROSAT observations of BL Lacertae objects (Lamer+ 1996)

Details ROSAT observations of BL Lacertae objects (Lamer+ 1996) ROSAT observations of BL Lacertae objects (Lamer+ 1996)

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..33110384l&link_type=abstract

VizieR On-line Data Catalog: J/A+A/311/384. Originally published in: 1996A&A...311..384L

Computer Science

Bl Lac Objects, X-Ray Sources

Scientific paper

We present soft X-ray spectra of 74 BL Lacertae objects observed with the PSPC detector on board of the ROSAT satellite. The sample contains all BL Lac objects detected during the pointed observation phase as a target or serendipitously. We have investigated the soft X-ray and broad band spectral properties and discuss the consequences for the X-ray emission processes. For the first time a clear dependence of the X-ray spectral steepness on the radio to X-ray spectral energy distribution is found: {alpha}rx and {alpha}x are correlated in the X-ray selected (XBL) subsample and anticorrelated in the radio selected (RBL) subsample. The objects with intermediate {alpha}rx values thus do have the steepest soft X-ray spectra. Simulated PSPC spectra based on a set of simple two component multifrequency spectra are in good agreement with the measurements and suggest a broad range of synchrotron cutoff energies. We have calculated synchrotron self-Compton beaming factors for a subsample of radio bright objects and find a correlation of the beaming factors {delta}IC with {alpha}rx and {alpha}x. The most extreme RBL objects are very similar to flat spectrum radio quasars in all their broad band and X-ray properties.
(2 data files).

Affiliated with

Also associated with

No associations

Rating

ROSAT observations of BL Lacertae objects (Lamer+ 1996) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with ROSAT observations of BL Lacertae objects (Lamer+ 1996), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ROSAT observations of BL Lacertae objects (Lamer+ 1996) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1619800