Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.0410p&link_type=abstract
American Astronomical Society, AAS Meeting #211, #04.10; Bulletin of the American Astronomical Society, Vol. 39, p.731
Astronomy and Astrophysics
Astronomy
Scientific paper
We observed the blazar 3C 279 simultaneously in J, H, and Ks-bands using the near-infrared imaging polarimeter SIRPOL mounted on the 1.4 m telescope IRSF (InfraRed Survey Facility) at the South African Astronomical Observatory. We monitored the variability of the flux and polarization during 5 nights in 2007 January - February when the blazar was in active state. We detected inter-day variabilities in the flux, about 0.5 magnitude differences in J, H, and Ks-bands, the degree of polarization, between 2 and 9 percent, and the polarization angle, between -30 and 90 degree. We also notices small variations in the color indexes, about 0.1 magnitude differences in (J-H) and (H-K). Simultaneous polarization and flux variability studies of blazars can reveal their internal radiation mechanisms and magnetic field structures.
Bai Jinming
Gupta Alok C.
Kwon John
Pak Soojong
Sato Sasumu
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