VLBI Monitoring of the Bright Gamma-Ray Blazar PKS 0537-441

One of the defining characteristics of BL Lacertae objects is their strong variability across the electromagnetic spectrum. PKS 0537-441 is one such object and is one of the most luminous blazars from radio to gamma-ray wavelengths. It was detected as a strong and highly variable source by EGRET and...

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Bibliographische Detailangaben
Hauptverfasser:	Hungwe, F, Ojha, R, Kadler, M, Booth, R, Blanchard, J, Lovell, J, Mueller, C, Boeck, M
Format:	Report
Sprache:	eng
Schlagworte:	AGN(ACTIVE GALACTIC NUCLEI) Astronomy Astrophysics GAMMA RAY BLAZARS GAMMA RAYS PKS 0537-441(BLASAR) QUASARS RADIO ASTRONOMY RADIO INTERFEROMETRY RADIO LIGHT CURVES RADIO SOURCES(ASTRONOMY) SYMPOSIA VLBI(VERY LONG BASELINE INTERFEROMETRY)
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Beschreibung
Zusammenfassung:	One of the defining characteristics of BL Lacertae objects is their strong variability across the electromagnetic spectrum. PKS 0537-441 is one such object and is one of the most luminous blazars from radio to gamma-ray wavelengths. It was detected as a strong and highly variable source by EGRET and has been reported several times to be in an active state by Fermi . It is one of the brightest gamma-ray blazars detected in the southern sky so far. The TANAMI (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry) program is monitoring PKS 0537-441 at VLBI resolutions. We present 8.4 GHz and 22 GHz images of the milliarcsecond scale structure. We also present our ongoing analysis of the spectral and temporal changes in this object. Proceedings of the workshop Fermi meets Jansky: AGN in Radio and Gamma Rays : held in Bonn, Germany, 21-23 June 2010, p199-202. Prepared in collaboration with CRESST/NASA Goddard Space Flight Center, Greenbelt, MD. Government or Federal Purpose Rights License.