INVESTIGADORES
CELLONE Sergio Aldo
congresos y reuniones científicas
Título:
Study of photo-polarimetric microvariability in the blazars 1ES 1959+650 and HB89 2201+044
Autor/es:
SOSA, M. S.; CELLONE, S. A.; ANDRUCHOW, I.; VON ESSEN, C.
Lugar:
Tandil
Reunión:
Congreso; 56a. Reunión Anual de la Asoc. Argentina de Astronomía; 2013
Institución organizadora:
AAA
Resumen:
We present a study carried out to determine variations in scales ranging
from hours to days, both in the total flux and optical linear
polarization in two blazars: 1ES1959+650 and HB89 2201+044. Both blazars
are relatively nearby active galactic nuclei (AGN), so their host
galaxies are well resolved, having accurately measured photometric
parameters. This allowed us to apply models that take into account the
depolarizing effect introduced by the (un-polarized) light of the
galaxy, and, at the same time, to evaluate any spurious variation in
polarization time-curves due to variable seeing conditions, that affect
differently the (point-like) core and the (extended) host galaxy. Our
results provide information on the optical behavior of high energy
blazars, taking advantage of a scarcely explored technique as optical
polarimetry with high-temporal resolution.