6533b85efe1ef96bd12c07c6
RESEARCH PRODUCT
Multiband Photometry of the Blazar PKS 0537-441: A Major Active State in December 2004 - March 2005
P. D'avanzoAlberto Fernández-sotoG. ChincariniG. ChincariniGiuseppe CutispotoAldo TrevesEliana PalazziGino TostiL. A. AntonelliA. DolciniMauro StefanonFilippo Maria ZerbiFabrizio VitaliAlessandro MonfardiniE. MolinariStefano CovinoE. MeursPaolo ConconiVincenzo TestaJohn DanzigerMarcello RodonoMarcello RodonoElena Piansubject
Physicsgalaxies: active; galaxies: BL Lacertae objects: PKS 0537-441galaxies: activeAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICAAstrophysicslaw.inventionTelescopePhotometry (astronomy)galaxies: BL Lacertae objects: PKS 0537-441Space and Planetary Sciencelawgalaxies: active ; galaxies: BL Lacertae objects: PKS 0537-441active [galaxies]Spectral energy distributionActive stateBlazarBL Lacertae objects: PKS 0537-441 [galaxies]:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]description
Multiband VRIJHK photometry of the Blazar PKS 0537-441 obtained with the REM telescope from December 2004 to March 2005 is presented. A major period of activity is found with more than four magnitudes variability in the V filter in 50 days and of 2.5 in 10 days. In intensity and duration the activity is similar to that of 1972 reported by Eggen (1973), but it is much better documented. No clear evidence of variability on time-scale of minutes is found. The spectral energy distribution is roughly described by a power-law, with the weaker state being the softer.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-01-01 |