A. Witzel

Max Planck Institute for Radio Astronomy — Germany

Physics and Astronomy · Physical Sciences

34h-index4.5kcitations341works0.02yr avg
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Research Topics

Astrophysics and Cosmic Phenomena(200), Radio Astronomy Observations and Technology(182), Gamma-ray bursts and supernovae(66), Astronomical Observations and Instrumentation(45), Geophysics and Gravity Measurements(43)

Publications340 total

Possible evidence for a supermassive binary black hole in 3C454.3
Astronomy and Astrophysics·2021· 7 citedOpen Access
VizieR Online Data Catalog: NGC 1333-IRAS4A radio images (Taquet+, 2020)
VizieR Online Data Catalog·2020
Possible evidence of a supermassive black hole binary with two radio jets in blazar 3C279
Astronomy and Astrophysics·2018· 15 citedOpen Access
A precessing and nutating jet in OJ287
Proceedings of the International Astronomical Union·2018· 1 cited
OJ287: Deciphering the “Rosetta stone of blazars★”
Monthly Notices of the Royal Astronomical Society·2018· 120 citedOpen Access
Model simulation of jet precession in quasar PG 1302-102
Astronomy and Astrophysics·2018· 15 citedOpen Access
OJ287 taken to pieces: the origin of a precessing and rotating jet
Journal of Physics Conference Series·2017· 1 citedOpen Access
Possible quasi-periodic ejections in quasar B1308+326
Astronomy and Astrophysics·2017· 7 citedOpen Access
A swirling jet in the quasar 1308+326
Astronomy and Astrophysics·2017· 34 citedOpen Access
A possible precessing nozzle and the Lense-Thirring effect in blazar 3C 454.3
Research in Astronomy and Astrophysics·2014· 14 citedOpen Access
2251<b>+</b>158 (3C 454.3): detection of an arc-like structure on parsec scales
Astronomy and Astrophysics·2013· 9 citedOpen Access
BREVES CONSIDERAÇÕES SOBRE A PROTEÇÃO DO IDOSO NO ÂMBITO DA FAMÍLIA
Revista Eletrônica da Faculdade de Direito de Franca·2012Open Access
Detecting supermassive binary black holes with VLBI - discovery of a ring-structure in 3C454.3
Journal of Physics Conference Series·2012· 5 citedOpen Access
A seasonal cycle and an abrupt change in the variability characteristics of the intraday variable source S4 0954+65
Springer Link (Chiba Institute of Technology)·2012· 16 cited
Deconstructing blazars: A different scheme for jet kinematics in flat-spectrum AGN
Astronomy and Astrophysics·2011· 11 citedOpen Access
On the influence of the Sun on the rapid variability of compact extragalactic sources
Astronomy and Astrophysics·2011· 8 citedOpen Access
<i>γ</i>-rays in flat-spectrum AGN: revisiting the fast jet hypothesis with the CJF sample
Astronomy and Astrophysics·2011· 10 citedOpen Access
A possible jet precession in the periodic quasar B0605–085
Springer Link (Chiba Institute of Technology)·2010· 21 cited
Multiwavelength VLBI observations of Sagittarius A*
Astronomy and Astrophysics·2010· 49 citedOpen Access
Tracing the merger-driven evolution of active galaxies using the CJF sample
Astronomy and Astrophysics·2010· 11 citedOpen Access
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Frequent Co-authors

T. P. Krichbaum(29), J. A. Zensus(19), S. Britzen(15), A. Kraus(14), M. F. Aller(10), L. Fuhrmann(10), I. I. K. Pauliny‐Toth(10), H. D. Aller(9), U. Bach(8), S. J. Wagner(7), L. Ostorero(7), A. Quirrenbach(7), E. Preuß(7), A. Eckart(7), H. Ungerechts(6), K. I. Kellermann(6), E. Ros(6), I. Agudo(6), M. Villata(5), O. M. Kurtanidze(5)