Computer Science
Scientific paper
Mar 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8126998u&link_type=abstract
Unknown
Computer Science
Bl Lacertae Objects, Radio Spectra, Relativistic Electron Beams, Synchrotron Radiation, X Ray Spectra, Compton Effect, Energetic Particles, Heao 1, Proton Flux Density, Red Shift
Scientific paper
The newly discovered BL Lacertae object, PKS 2155-304, was observed with the medium and high intensity energy detectors of the HEAO-1 A2 experiment. The variability by a factor of two in less than a day reported by Snyder, et al (1979) is confirmed. Two spectra, obtained a year apart, while the satellite was in scanning mode, are well fit by simple power laws with energy spectral index alpha1 equals approximately 1.4. A third spectrum, of higher statistical quality, obtained while the satellite was pointed at its source, has has two components. An acceptable fit was obtained using a two power law model, with indices alpha1 equals 2.0 (+1.2, -0.6) and alpha2 equals -1.5 (+1.5, -2.3). An interpretation of the overall spectrum from radio through X-rays in terms of a synchrotron self-Compton model gives a good description of the data if allowance is made for relativistic beaming. Thus, from a consideration of the spectrum, combined with an estimate of the size of the source, the presence of jets is inferred without their observation.
Mushotzky Richard F.
Urry Claudia Megan
No associations
LandOfFree
PKS 2155-304 relativistically beamed synchrotron radiation from BL LAC object 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 PKS 2155-304 relativistically beamed synchrotron radiation from BL LAC object, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PKS 2155-304 relativistically beamed synchrotron radiation from BL LAC object will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1040342