PKS 0537-441: optical monitoring

Details PKS 0537-441: optical monitoring PKS 0537-441: optical monitoring

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..564....1c&link_type=abstract

The Astronomer's Telegram, #564

Astronomy and Astrophysics

Astronomy

5

Optical, Request For Observations, Agn, Transients

Scientific paper

The REM 60cm robotic telescope located at La Silla, Chile, has observed the blazar PKS 0537-441 with the CCD camera and VRI filters on 2005 July 7.35, 9.35, 10.35, 11.35 UT. A steady and achromatic increase in flux by almost 1.5 magnitudes is detected. The amplitude of the variation in such short time scale is remarkable, and if compared to the dramatic variability observed in December 2004 - March 2005 (Dolcini et al., submitted) suggests a long-term active state of the source.

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