CASLEO 05526
COMPLEJO ASTRONOMICO "EL LEONCITO"
congresos y reuniones científicas
Título:
Optical microvariability: signature of jetted AGN
Autor/es:
CELLONE, S. A.
Lugar:
La Plata
Reunión:
Jornada; High Energy Sky: unidentified sources; 2019
Resumen:
It is a fact that Active Galactic Nuclei (AGN) display variable emission along the whole electromagnetic spectrum. Different AGN classes and subclasses, in turn, are characterised by different amplitudes, duty-cycles,and time-scales in their light-curves. While jetted AGN are in general more variable than their non-jetted counterparts, those within the blazar class show the most extreme behaviours. Optical microvariability (i.e., significant flux variations on hours/minutes time-scales), both in total andpolarised flux, has been used as a powerful tool to test processes takingplace in the innermost regions of AGN jets.I will review here some results from studies of optical microvariability inAGN, carried out by our group at FCAG/IALP and IAR along the last several years. The potential of single-epoch polarimetric observations to identify unclassified sources will also be addressed. Finally, I will comment on the galaxy group method to find redshifts of lineless BL Lacs.
