Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apjs...58..255m&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 58, June 1985, p. 255-263.
Astronomy and Astrophysics
Astrophysics
49
Astronomical Photometry, Bl Lacertae Objects, Color, Relativistic Effects, Synchrotron Radiation, Ubv Spectra
Scientific paper
A total of 85 UBVRI observations of BL Lac objects is presented. For most of them, an average continuum can be traced by means of well-defined color indices. These continua are always well reproduced by power laws, strongly supporting the hypothesis of a synchrotron origin of the radiation output, as well as the conclusion that there is no dust in such objects. The analysis of the variability leads to a rough estimate of the value of the magnetic field, which is of the same order for all the objects, around 0.00003 G. The optical continua can be considered to correspond to the broken part of the synchrotron spectrum. Relativistic effects are needed in order to avoid the Compton paradox.
Aparicio Antonio
Garcia-Pelayo Jose Manuel
Masegosa Josefa
Moles Mariano
No associations
LandOfFree
UBVRI observations of BL Lacertae objects 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 UBVRI observations of BL Lacertae objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UBVRI observations of BL Lacertae objects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1663850