V
V. Fonseca
Researcher at Complutense University of Madrid
Publications - 50
Citations - 2157
V. Fonseca is an academic researcher from Complutense University of Madrid. The author has contributed to research in topics: HEGRA & Cherenkov radiation. The author has an hindex of 24, co-authored 50 publications receiving 2103 citations. Previous affiliations of V. Fonseca include Paul Scherrer Institute.
Papers
More filters
Journal ArticleDOI
Evidence for TeV gamma ray emission from Cassiopeia A
Felix Aharonian,A. G. Akhperjanian,Juan Abel Barrio,Konrad Bernlöhr,H. Börst,H. Bojahr,O. Bolz,Jose Luis Contreras,Juan Cortina,S. Denninghoff,V. Fonseca,J. C. Gonzalez,N. Götting,G. Heinzelmann,G. Hermann,A. Heusler,Werner Hofmann,Dieter Horns,A. Ibarra,C. Iserlohe,I. Jung,R. Kankanyan,M. Kestel,J. Kettler,A. Kohnle,A. Konopelko,H. Kornmeyer,D. Kranich,Henric Krawczynski,Henric Krawczynski,H. Lampeitl,M. López,E. Lorenz,F. Lucarelli,N. Magnussen,O. Mang,H. J. Meyer,R. Mirzoyan,Abelardo Moralejo,E. Ona,L. Padilla,M. Panter,R. Plaga,A. Plyasheshnikov,A. Plyasheshnikov,J. Prahl,Gerd Pühlhofer,G. Rauterberg,A. Röhring,Wolfgang Rhode,Gavin Rowell,V. Sahakian,M. Samorski,M. Schilling,Frank G. Schröder,M. Siems,W. Stamm,M. Tluczykont,Heinrich J. Völk,C. A. Wiedner,W. Wittek +60 more
TL;DR: In this article, a supernova remnant Cassiopeia A was detected at the 5 level, and a flux of (5:8 1:2stat 1.2syst )1 0 9 ph m 2 s 1 above 1 TeV was derived.
Journal ArticleDOI
An unidentified TeV source in the vicinity of Cygnus OB2
Felix Aharonian,A. G. Akhperjanian,M. Beilicke,Konrad Bernlöhr,H. Börst,H. Bojahr,O. Bolz,T. Coarasa,Jose Luis Contreras,Juan Cortina,S. Denninghoff,V. Fonseca,M. Girma,N. Götting,G. Heinzelmann,G. Hermann,A. Heusler,Werner Hofmann,Dieter Horns,I. Jung,R. Kankanyan,M. Kestel,J. Kettler,A. Kohnle,A. Konopelko,H. Kornmeyer,D. Kranich,Henric Krawczynski,H. Lampeitl,M. López,E. Lorenz,F. Lucarelli,N. Magnussen,O. Mang,H. J. Meyer,M. Milite,R. Mirzoyan,Abelardo Moralejo,E. Ona,M. Panter,A. Plyasheshnikov,A. Plyasheshnikov,J. Prahl,Gerd Pühlhofer,G. Rauterberg,Raquel de los Reyes,Wolfgang Rhode,J. Ripken,A. Röhring,Gavin Rowell,V. Sahakian,M. Samorski,M. Schilling,Frank G. Schröder,M. Siems,D. Sobzynska,W. Stamm,M. Tluczykont,Heinrich J. Völk,C. A. Wiedner,W. Wittek,Yasunobu Uchiyama,Tadayuki Takahashi +62 more
TL;DR: In this article, a signal positionally inside the core of the OB association Cygnus OB2, at the edge of the 95% error circle of the EGRET source 3EG J2033+4118, and 0:5 north of Cyg X-3.
Journal ArticleDOI
First results on the performance of the HEGRA IACT array
A. Daum,G. Hermann,M. Heß,Werner Hofmann,H. Lampeitl,G. Pühlhofer,Felix Aharonian,A. G. Akhperjanian,Juan Abel Barrio,Juan Abel Barrio,A. S. Beglarian,Konrad Bernlöhr,J. J. G. Beteta,S.M. Bradbury,Jose Luis Contreras,Juan Cortina,T. Deckers,E. Feigl,José Fernández,José Fernández,V. Fonseca,A. Fraß,Burkhardt Funk,J. C. Gonzalez,G. Heinzelmann,M. Hemberger,A. Heusler,I. Holl,Dieter Horns,R. Kankanyan,R. Kankanyan,O. Kirstein,C. Köhler,A. Konopelko,D. Kranich,Henric Krawczynski,H. Kornmayer,Axel Lindner,E. Lorenz,N. Magnussen,H. J. Meyer,R. Mirzoyan,R. Mirzoyan,R. Mirzoyan,H. Möller,Abelardo Moralejo,L. Padilla,M. Panter,D. Petry,R. Plaga,J. Prahl,C. Prosch,G. Rauterberg,Wolfgang Rhode,A. Röhring,V. Sahakian,M. Samorski,Javier Sánchez,D. Schmele,W. Stamm,M. Ulrich,Heinrich J. Völk,S. Westerhoff,B. Wiebel-Sooth,C. A. Wiedner,M. Willmer,H. Wirth +66 more
TL;DR: In this paper, the performance characteristics of the HEGRA IACT array are given based on stereoscopic observations of the Crab Nebula with four telescopes, which provides a γ-ray energy threshold around 0.5 TeV.
Journal ArticleDOI
Variations of the TeV energy spectrum at different flux levels of Mkn 421 observed with the HEGRA system of Cherenkov telescopes
Felix Aharonian,A. G. Akhperjanian,M. Beilicke,Konrad Bernlöhr,H. Börst,H. Bojahr,O. Bolz,T. Coarasa,Jose Luis Contreras,Juan Cortina,Luigi Costamante,S. Denninghoff,V. Fonseca,M. Girma,N. Götting,G. Heinzelmann,G. Hermann,A. Heusler,Werner Hofmann,Dieter Horns,I. Jung,R. Kankanyan,M. Kestel,J. Kettler,A. Kohnle,A. Konopelko,H. Kornmeyer,D. Kranich,Henric Krawczynski,Henric Krawczynski,H. Lampeitl,M. López,E. Lorenz,F. Lucarelli,O. Mang,H. J. Meyer,R. Mirzoyan,M. Milite,Abelardo Moralejo,E. Ona,M. Panter,A. Plyasheshnikov,A. Plyasheshnikov,Gerd Pühlhofer,G. Rauterberg,Raquel de los Reyes,Wolfgang Rhode,J. Ripken,Gavin Rowell,V. Sahakian,M. Samorski,M. Schilling,M. Siems,D. Sobzynska,W. Stamm,M. Tluczykont,Heinrich J. Völk,C. A. Wiedner,W. Wittek,R. A. Remillard +59 more
TL;DR: F. Aharonian, A. Akhperjanian, M. Beilicke, K. Bernlohr, H. Bojahr, O. Bolz, T. Contreras, J. Contraras, S. Cortina, L. Girma, N. Gotting, G. Heusler, W. Hofmann, D. Horns, I. Jung, R. Kankanyan,M.
Journal ArticleDOI
The unidentified TeV source (TeV J2032+4130) and surrounding field: Final HEGRA IACT-System results
Felix Aharonian,A. G. Akhperjanian,M. Beilicke,Konrad Bernlöhr,H. Börst,H. Bojahr,O. Bolz,T. Coarasa,Jose Luis Contreras,Juan Cortina,S. Denninghoff,V. Fonseca,M. Girma,N. Götting,G. Heinzelmann,German Hermann,A. Heusler,Werner Hofmann,Dieter Horns,I. Jung,I. Jung,R. Kankanyan,M. Kestel,A. Kohnle,A. Konopelko,A. Konopelko,D. Kranich,H. Lampeitl,M. A. Lopez,E. Lorenz,F. Lucarelli,O. Mang,Daniel Mazin,H. J. Meyer,R. Mirzoyan,Abelardo Moralejo,E. Ona-Wilhelmi,M. Panter,A. Plyasheshnikov,A. Plyasheshnikov,G. Pühlhofer,R. de los Reyes,Wolfgang Rhode,J. Ripken,Gavin Rowell,V. Sahakian,M. Samorski,M. Schilling,M. Siems,D. Sobzynska,W. Stamm,M. Tluczykont,M. Tluczykont,V. Vitale,Heinrich J. Völk,C. A. Wiedner,W. Wittek +56 more
TL;DR: The unknown TeV source in Cygnus is now confirmed by follow-up observations from 2002 with the HEGRA-stereoscopic system of Cherenkov Telescopes.