H
H. Ungerechts
Publications - 56
Citations - 2984
H. Ungerechts is an academic researcher. The author has contributed to research in topics: Blazar & Quasar. The author has an hindex of 30, co-authored 56 publications receiving 2842 citations.
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Journal ArticleDOI
Simultaneous Planck, Swift, and Fermi observations of X-ray and γ-ray selected blazars
Paolo Giommi,G. Polenta,G. Polenta,Anne Lähteenmäki,Anne Lähteenmäki,D. J. Thompson,M. Capalbi,S. Cutini,Dario Gasparrini,J. González-Nuevo,Jonathan León-Tavares,M. López-Caniego,Mn Mazziotta,C. Monte,C. Monte,M. Perri,S. Rainò,S. Rainò,G. Tosti,G. Tosti,Andrea Tramacere,F. Verrecchia,Hugh D. Aller,M. F. Aller,E. Angelakis,Denis Bastieri,Denis Bastieri,Andrei Berdyugin,Anna Bonaldi,Laura Bonavera,Laura Bonavera,Carlo Burigana,David N. Burrows,S. Buson,E. Cavazzuti,G. Chincarini,Sergio Colafrancesco,L. Costamante,F. Cuttaia,Filippo D'Ammando,G. de Zotti,G. de Zotti,M. Frailis,Lars Fuhrmann,S. Galeotta,F. Gargano,N. Gehrels,Nicola Giglietto,Nicola Giglietto,Francesco Giordano,Marcello Giroletti,E. Keihänen,O. King,Thomas P. Krichbaum,Anthony Lasenby,N. Lavonen,Charles R. Lawrence,C. Leto,Elina Lindfors,Nazzareno Mandolesi,Marcella Massardi,Walter Max-Moerbeck,Peter F. Michelson,M. G. Mingaliev,Paolo Natoli,Paolo Natoli,Paolo Natoli,I. Nestoras,E. Nieppola,E. Nieppola,Kari Nilsson,B. Partridge,Vasiliki Pavlidou,T. J. Pearson,Pietro Procopio,Jörg P. Rachen,Anthony C. S. Readhead,R. Reeves,A. Reimer,R. Reinthal,S. Ricciardi,Joseph L. Richards,D. Riquelme,Jari Saarinen,Anna Sajina,M. Sandri,P. Savolainen,A. Sievers,A. Sillanpää,Yu. V. Sotnikova,Mark Stevenson,G. Tagliaferri,L. O. Takalo,Joni Tammi,D. Tavagnacco,Luca Terenzi,L. Toffolatti,Merja Tornikoski,Corrado Trigilio,M. Turunen,G. Umana,H. Ungerechts,F. Villa,Jingwen Wu,Andrea Zacchei,J. A. Zensus,Xu Zhou +106 more
TL;DR: In this paper, simultaneous Planck, Swift, Fermi, and ground-based data for 105 blazars belonging to three samples with flux limits in the soft X-ray, hard Xray, and gamma-ray bands, with additional 5 GHz flux-density limits to ensure a good probability of a Planck detection.
Journal ArticleDOI
Simultaneous Planck, Swift, and Fermi observations of X-ray and gamma-ray selected blazars
P. Giommi,G. Polenta,Anne Lähteenmäki,D. J. Thompson,M. Capalbi,S. Cutini,D. Gasparrini,J. González-Nuevo,Jonathan León-Tavares,M. López-Caniego,Mn Mazziotta,C. Monte,M. Perri,S. Rainò,G. Tosti,Andrea Tramacere,F. Verrecchia,Hugh D. Aller,M. F. Aller,Emmanouil Angelakis,D. Bastieri,Andrei Berdyugin,Anna Bonaldi,Laura Bonavera,Carlo Burigana,David N. Burrows,S. Buson,E. Cavazzuti,G. Chincarini,S. Colafrancesco,Luigi Costamante,F. Cuttaia,F. D'Ammando,G. de Zotti,M. Frailis,L. Fuhrmann,S. Galeotta,F. Gargano,N. Gehrels,Nicola Giglietto,Francesco Giordano,Marcello Giroletti,E. Keihänen,O. King,Thomas P. Krichbaum,Anthony Lasenby,N. Lavonen,Charles R. Lawrence,C. Leto,Elina Lindfors,N. Mandolesi,Marcella Massardi,Walter Max-Moerbeck,P. F. Michelson,M. G. Mingaliev,Paolo Natoli,I. Nestoras,E. Nieppola,Kari Nilsson,B. Partridge,Vasiliki Pavlidou,T. J. Pearson,Pietro Procopio,Jörg P. Rachen,A. C. S. Readhead,R. Reeves,A. Reimer,R. Reinthal,S. Ricciardi,J. L. Richards,D. Riquelme,Jari Saarinen,Anna Sajina,M. Sandri,P. Savolainen,A. Sievers,A. Sillanpää,Yu. V. Sotnikova,Mark Stevenson,G. Tagliaferri,L. O. Takalo,Joni Tammi,D. Tavagnacco,Luca Terenzi,L. Toffolatti,Merja Tornikoski,Corrado Trigilio,M. Turunen,G. Umana,H. Ungerechts,F. Villa,Jingwen Wu,Andrea Zacchei,J. A. Zensus,Xu Zhou +94 more
TL;DR: In this paper, simultaneous Planck, Swift, Fermi, and ground-based data for 105 blazars belonging to three samples with flux limits in the soft X-ray, hard Xray, and gamma-ray bands were presented.
Journal ArticleDOI
Detection of significant cm to sub-mm band radio and γ-ray correlated variability in Fermi bright blazars
Lars Fuhrmann,Stefan Larsson,James Chiang,E. Angelakis,J. A. Zensus,I. Nestoras,Thomas P. Krichbaum,H. Ungerechts,A. Sievers,Vasiliki Pavlidou,A. C. S. Readhead,Walter Max-Moerbeck,T. J. Pearson +12 more
TL;DR: In this paper, a cross-correlation analysis between radio and γ-ray signals is presented, showing that radio lagging γ rays is a significant phenomenon in the frequency-dependent frequency domain with a frequency dependence τ(r, γ) ∈ ν^(−1), in good agreement with jet opacity.
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
Radio to gamma-ray variability study of blazar S5 0716+714
Bindu Rani,Thomas P. Krichbaum,Lars Fuhrmann,Markus Böttcher,Markus Böttcher,Benoit Lott,Hugh D. Aller,M. F. Aller,Emmanouil Angelakis,U. Bach,Denis Bastieri,Denis Bastieri,A. D. Falcone,Yasushi Fukazawa,Krisztina É. Gabányi,Alok C. Gupta,Mark Gurwell,Ryosuke Itoh,Koji S. Kawabata,M. Krips,Anne Lähteenmäki,Xin Liu,Nicola Marchili,Nicola Marchili,Walter Max-Moerbeck,I. Nestoras,E. Nieppola,G. Quintana-Lacaci,Anthony C. S. Readhead,J. L. Richards,Mahito Sasada,Mahito Sasada,A. Sievers,Kirill Sokolovsky,Kirill Sokolovsky,Michael C. Stroh,Joni Tammi,Merja Tornikoski,Makoto Uemura,H. Ungerechts,T. Urano,J. A. Zensus +41 more
TL;DR: In this article, a series of radio, optical, X-ray, and γ-ray observations of the BL Lac object S50716+714 carried out between April 2007 and January 2011 were obtained using several ground and space-based facilities.