2000/07/12 by D. Trèvese, Dario Trevese, Trevese, Dario +3
Chemistry · Engineering · Physics and Astronomy · #Adaptive optics and wavefront sensing #Solid State Laser Technologies #Spectroscopy and Laser Applications #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0007161
3 pages, 2 figures, proc. 4th Italian Meeting on AGN "AGN nel 2000", Trieste, May 15-18, 2000, to be published in Mem. SAIt
arxiv created 2000/07/12 · arxiv updated 2009/12/01
A new analysis of the variability of the spectral slope of PG QSOs has been performed, on the basis of recent literature data in the B and R photometric bands. Preliminary results confirm our previous findings concerning the increase of variability with the rest-frame observing frequency. We also find a correlation of the spectral slope with luminosity, consistent with temperature changes of an emitting black body.