0. 35-3. 5 micron photometry of blazars
- Cincinnati Univ., OH (USA) Cincinnati Observatory, OH (USA)
Thirty-one blazars were observed photometrically in the near-infrared, with additional observations in the optical for many of them. A few of them exhibit spectral behavior indicative of multiple emission components or emission processes. Six objects were also analyzed for any possible correlation between spectral steepness and luminosity. In one object, 0735 + 178, the spectral index alpha is correlated with the flux level with 99.9 pct confidence. Two other objects, 0846 + 513 and 0851 + 202, showed similar correlations at the 98 and 90 pct confidence levels, respectively. In all three cases the spectrum became flatter at higher flux levels. the data are consistent with expectations of models of inhomogeneous synchrotron models. In some cases, the self-Compton component may contribute significantly to the optical flux. 27 refs.
- OSTI ID:
- 5913932
- Journal Information:
- Publications of the Astronomical Society of the Pacific; (USA), Vol. 103; ISSN 0004-6280
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multiwavelength Variability Study of the Classical BL Lac Object PKS 0735+178 on Timescales Ranging from Decades to Minutes
Multifrequency studies of the narrow-line Seyfert 1 galaxy SBS 0846+513
Related Subjects
GENERAL PHYSICS
COSMIC X-RAY SOURCES
PHOTOMETRY
CORRELATIONS
GALAXY NUCLEI
LUMINOSITY
MATHEMATICAL MODELS
NEAR INFRARED RADIATION
RED SHIFT
SYNCHROTRON RADIATION
VISIBLE RADIATION
BREMSSTRAHLUNG
COSMIC RAY SOURCES
ELECTROMAGNETIC RADIATION
INFRARED RADIATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources