A
A. E. Volvach
Researcher at ASTRON
Publications - 64
Citations - 1557
A. E. Volvach is an academic researcher from ASTRON. The author has contributed to research in topics: Blazar & Maser. The author has an hindex of 17, co-authored 36 publications receiving 1458 citations.
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Journal ArticleDOI
The unprecedented optical outburst of the quasar 3C 454.3 - The WEBT campaign of 2004–2005
M. Villata,C. M. Raiteri,Thomas J. Balonek,Margo F. Aller,Svetlana G. Jorstad,Omar M. Kurtanidze,Fabrizio Nicastro,Fabrizio Nicastro,Fabrizio Nicastro,Kari Nilsson,Hugh D. Aller,A. Arai,A. A. Arkharov,U. Bach,Erika Benítez,Andrei Berdyugin,Carla Buemi,Markus Böttcher,D. Carosati,Ricard Casas,A. Caulet,Wen Ping Chen,P.-S. Chiang,Yi Chou,Stefano Ciprini,J. M. Coloma,G. Di Rico,C. Díaz,N. V. Efimova,N. V. Efimova,C. Forsyth,Antonio Frasca,Lars Fuhrmann,Lars Fuhrmann,Bryce Gadway,S. Gupta,Vladimir A. Hagen-Thorn,Vladimir A. Hagen-Thorn,Jonathan E. Harvey,Jochen Heidt,H. Hernandez-Toledo,Filip Hroch,Chin-Ping Hu,René Hudec,Mansur Ibrahimov,Akira Imada,M. Kamata,Taichi Kato,M. Katsuura,Tatiana S. Konstantinova,E. N. Kopatskaya,D. Kotaka,Yuri Y. Kovalev,Yuri Y. Kovalev,Yu. A. Kovalev,Thomas P. Krichbaum,K. Kubota,M. Kurosaki,L. Lanteri,Valeri M. Larionov,Valeri M. Larionov,L. V. Larionova,Eija Laurikainen,C.-U. Lee,Paolo Leto,Anne Lähteenmäki,Omar López-Cruz,E. Marilli,Alan P. Marscher,I. M. McHardy,Soumen Mondal,B. Mullan,N. Napoleone,Maria G. Nikolashvili,J. M. Ohlert,S. Postnikov,T. Pursimo,M. Ragni,J. A. Ros,Kozo Sadakane,A. C. Sadun,Tuomas Savolainen,E. A. Sergeeva,Lorand A. Sigua,A. Sillanpää,L. Sixtova,Naoko Sumitomo,L. O. Takalo,Harri Teräsranta,Merja Tornikoski,Corrado Trigilio,G. Umana,A. E. Volvach,B. Voss,S. Wortel +94 more
TL;DR: In this article, a large multi-wavelength campaign was organized by the Whole Earth Blazar Telescope (WEBT) to follow the emission behavior of the radio quasar 3C 454.3.
Journal ArticleDOI
Results of WEBT, VLBA and RXTE monitoring of 3C 279 during 2006-2007 ⋆
Valeri M. Larionov,Valeri M. Larionov,Svetlana G. Jorstad,Svetlana G. Jorstad,Alan P. Marscher,C. M. Raiteri,M. Villata,Ivan Agudo,Margo F. Aller,Arkady A. Arkharov,I. M. Asfandiyarov,Uwe Bach,Rumen Bachev,Andrei Berdyugin,Markus Böttcher,Carla Buemi,P. Calcidese,D. Carosati,Patrick Charlot,Wen Ping Chen,A. Di Paola,Mauro Dolci,S.S. Doğru,V. T. Doroshenko,V. T. Doroshenko,Yu. S. Efimov,Ahmet Erdem,Antonio Frasca,Lars Fuhrmann,P. Giommi,L. Glowienka,Alok C. Gupta,Alok C. Gupta,Mark Gurwell,Vladimir A. Hagen-Thorn,W.-S. Hsiao,Mansur Ibrahimov,B. Jordan,M. Kamada,Tatiana S. Konstantinova,E. N. Kopatskaya,Yuri Y. Kovalev,Yuri Y. Kovalev,Yuri Kovalev,Omar M. Kurtanidze,Anne Lähteenmäki,L. Lanteri,L. V. Larionova,Paolo Leto,P. Le Campion,C.-U. Lee,Elina Lindfors,E. Marilli,I. M. McHardy,M. G. Mingaliev,S. V. Nazarov,E. Nieppola,Kari Nilsson,J. M. Ohlert,M. Pasanen,D. Porter,T. Pursimo,J. A. Ros,Kozo Sadakane,A. C. Sadun,S. G. Sergeev,N. Smith,A. Strigachev,Naoko Sumitomo,L. O. Takalo,Ken'ichi Tanaka,Corrado Trigilio,G. Umana,H. Ungerechts,A. E. Volvach,W. Yuan +75 more
TL;DR: In this article, the authors present radio-to-optical data taken by the WEBT, supplemented by our VLBA and RXTE observations, of 3C 279.
Journal ArticleDOI
Multifrequency monitoring of the blazar 0716+714 during the GASP-WEBT-AGILE campaign of 2007
M. Villata,C. M. Raiteri,Valeri M. Larionov,Valeri M. Larionov,Omar M. Kurtanidze,K. Nilsson,Margo F. Aller,Merja Tornikoski,A. E. Volvach,Hugh D. Aller,Arkady A. Arkharov,Uwe Bach,P. Beltrame,Gopal Bhatta,Carla Buemi,Markus Böttcher,P. Calcidese,D. Carosati,A. J. Castro-Tirado,D. da Rio,A. Di Paola,Mauro Dolci,E. Forné,Antonio Frasca,Vladimir A. Hagen-Thorn,Jochen Heidt,David Hiriart,Martin Jelínek,Givi N. Kimeridze,Tatiana S. Konstantinova,E. N. Kopatskaya,L. Lanteri,Paolo Leto,R. Ligustri,Elina Lindfors,Anne Lähteenmäki,E. Marilli,E. Nieppola,M. G. Nikolashvili,M. Pasanen,B. Ragozzine,J. A. Ros,Lorand A. Sigua,Richard L. Smart,M. Sorcia,L. O. Takalo,Marco Tavani,Corrado Trigilio,R. Turchetti,Kyle Uckert,G. Umana,S. Vercellone,James R. Webb +52 more
TL;DR: In this paper, the authors presented the GASP-WEBT optical and radio light curves of this blazar obtained in July-November 2007, about various AGILE pointings at the source.
Journal ArticleDOI
Multifrequency monitoring of the blazar 0716+714 during the GASP-WEBT-AGILE campaign of 2007
M. Villata,C. M. Raiteri,Valeri M. Larionov,Omar M. Kurtanidze,K. Nilsson,M. F. Aller,Merja Tornikoski,A. E. Volvach +7 more
TL;DR: In this article, the authors presented the GASP-WEBT optical and radio light curves of this blazar obtained in July-November 2007, about various AGILE pointings at the source.
Journal ArticleDOI
WEBT and XMM-Newton observations of 3C 454.3 during the post-outburst phase Detection of the little and big blue bumps ⋆
C. M. Raiteri,M. Villata,Valeri M. Larionov,Valeri M. Larionov,T. Pursimo,Mansur Ibrahimov,Kari Nilsson,Margo F. Aller,Omar M. Kurtanidze,Luigi Foschini,J. M. Ohlert,I. E. Papadakis,I. E. Papadakis,Naoko Sumitomo,A. E. Volvach,Hugh D. Aller,Arkady A. Arkharov,Uwe Bach,Andrei Berdyugin,Markus Böttcher,Carla Buemi,P. Calcidese,P. Charlot,A. J Delgado Sanchez,A. Di Paola,A. A Djupvik,Mauro Dolci,N. V. Efimova,Jun-Hui Fan,E. Forné,C. A. Gomez,Alok C. Gupta,Vladimir A. Hagen-Thorn,L. Hooks,Talvikki Hovatta,Y Ishii,M. Kamada,Tatiana S. Konstantinova,E. N. Kopatskaya,Yu. A. Kovalev,Yuri Y. Kovalev,Yuri Y. Kovalev,Anne Lähteenmäki,L. Lanteri,J. F. Le Campion,C.-U. Lee,Paolo Leto,H. C. Lin,Elina Lindfors,M. G. Mingaliev,Sahori Mizoguchi,Fabrizio Nicastro,M. G. Nikolashvili,Shinji Nishiyama,Linda Ostman,Evgeni Ovcharov,Pertti Pääkkönen,M. Pasanen,Elena Pian,Travis A. Rector,J. A. Ros,Kozo Sadakane,J. H. Selj,Evgeni Semkov,D Sharapov,Auni Somero,I Stanev,Anton Strigachev,L. O. Takalo,Ken'ichi Tanaka,Marco Tavani,I. Torniainen,Merja Tornikoski,Corrado Trigilio,G. Umana,S. Vercellone,Antoniya Valcheva,Antoniya Valcheva,L. N. Volvach,Masayuki Yamanaka +79 more
TL;DR: In this article, the authors report on follow-up observations to study the multiwavelength emission in the post-outburst phase of 3C 454.3 and ascribe this redder-when-brighter behaviour to the presence of a ''little blue bump'' due to line emission from the broad line region, which is clearly visible in the source spectral energy distribution (SED) during faint states.