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Flux upper limits f...
Flux upper limits for 47 AGN observed with HESS in 2004-2011
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Abramowski, A. (author)
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Aharonian, F. (author)
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Benkhali, F. Ait (author)
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show more...
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Akhperjanian, A. G. (author)
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Anguener, E. (author)
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Anton, G. (author)
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Balenderan, S. (author)
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Balzer, A. (author)
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Barnacka, A. (author)
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- Becherini, Yvonne (author)
- Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE)
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Tjus, J. Becker (author)
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Bernloehr, K. (author)
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Birsin, E. (author)
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Bissaldi, E. (author)
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Biteau, J. (author)
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Boettcher, M. (author)
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Boisson, C. (author)
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Bolmont, J. (author)
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Bordas, P. (author)
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Brucker, J. (author)
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Brun, F. (author)
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Brun, P. (author)
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Bulik, T. (author)
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Carrigan, S. (author)
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Casanova, S. (author)
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Cerruti, M. (author)
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- Punch, Michael (author)
- Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France
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Chalme-Calvet, R. (author)
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Chaves, R. C. G. (author)
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Cheesebrough, A. (author)
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Chretien, M. (author)
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Colafrancesco, S. (author)
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Cologna, G. (author)
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- Conrad, Jan (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Couturier, C. (author)
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Cui, Y. (author)
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Dalton, M. (author)
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Daniel, M. K. (author)
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Davids, I. D. (author)
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Degrange, B. (author)
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Deil, C. (author)
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dewilt, P. (author)
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- Dickinson, Hugh J. (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Djannati-Atai, A. (author)
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Domainko, W. (author)
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Drury, L. O 'C. (author)
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Dubus, G. (author)
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Dutson, K. (author)
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Dyks, J. (author)
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Dyrda, M. (author)
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Edwards, T. (author)
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Egberts, K. (author)
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Eger, P. (author)
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Espigat, P. (author)
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- Farnier, Christian (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum
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Fegan, S. (author)
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Feinstein, F. (author)
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Fernandes, M. V. (author)
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Fernandez, D. (author)
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Fiasson, A. (author)
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Fontaine, G. (author)
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Foerster, A. (author)
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Fuessling, M. (author)
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Gajdus, M. (author)
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Gallant, Y. A. (author)
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Garrigoux, T. (author)
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Giavitto, G. (author)
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Giebels, B. (author)
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Glicenstein, J. F. (author)
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Grondin, M. -H (author)
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Grudzinska, M. (author)
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Haeffner, S. (author)
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Hahn, J. (author)
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Harris, J. (author)
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Heinzelmann, G. (author)
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Henri, G. (author)
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Hermann, G. (author)
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Hervet, O. (author)
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Hillert, A. (author)
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Hinton, J. A. (author)
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Hofmann, W. (author)
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Hofverberg, P. (author)
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Holler, M. (author)
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Horns, D. (author)
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Jacholkowska, A. (author)
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Jahn, C. (author)
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Jamrozy, M. (author)
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Janiak, M. (author)
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Jankowsky, F. (author)
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Jung, I. (author)
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Kastendieck, M. A. (author)
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Katarzynski, K. (author)
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Katz, U. (author)
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Kaufmann, S. (author)
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Khelifi, B. (author)
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Kieffer, M. (author)
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Klepser, S. (author)
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Klochkov, D. (author)
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Kluzniak, W. (author)
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Kneiske, T. (author)
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Kolitzus, D. (author)
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Komin, Nu. (author)
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Kosack, K. (author)
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Krakau, S. (author)
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Krayzel, F. (author)
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Krueger, P. P. (author)
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Laffon, H. (author)
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Lamanna, G. (author)
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Lefaucheur, J. (author)
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Lemiere, A. (author)
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Lemoine-Goumard, M. (author)
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Lenain, J. -P (author)
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Lennarz, D. (author)
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Lohse, T. (author)
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Lopatin, A. (author)
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Lu, C. -C (author)
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Marandon, V. (author)
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Marcowith, A. (author)
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Marx, R. (author)
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Maurin, G. (author)
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Maxted, N. (author)
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Mayer, M. (author)
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McComb, T. J. L. (author)
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Mehault, J. (author)
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Meintjes, P. J. (author)
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Menzler, U. (author)
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- Meyer, Manuel (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Moderski, R. (author)
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Mohamed, M. (author)
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Moulin, E. (author)
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Murach, T. (author)
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Naumann, C. L. (author)
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de Naurois, M. (author)
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Niemiec, J. (author)
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Nolan, S. J. (author)
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Oakes, L. (author)
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Ohm, S. (author)
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Wilhelmi, E. de Ona (author)
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Opitz, B. (author)
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Ostrowski, M. (author)
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Oya, I. (author)
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Panter, M. (author)
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Parsons, R. D. (author)
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Arribas, M. Paz (author)
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Pekeur, N. W. (author)
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Pelletier, G. (author)
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Perez, J. (author)
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Petrucci, P. -O (author)
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Peyaud, B. (author)
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Pita, S. (author)
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Poon, H. (author)
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Puehlhofer, G. (author)
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Punch, M. (author)
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Quirrenbach, A. (author)
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Raab, S. (author)
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Raue, M. (author)
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Reimer, A. (author)
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Reimer, O. (author)
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Renaud, M. (author)
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Reyes, R. de Los (author)
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Rieger, F. (author)
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Rob, L. (author)
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Romoli, C. (author)
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Rosier-Lees, S. (author)
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Rowell, G. (author)
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Rudak, B. (author)
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Rulten, C. B. (author)
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Sahakian, V. (author)
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Sanchez, D. A. (author)
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Santangelo, A. (author)
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Schlickeiser, R. (author)
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Schuessler, F. (author)
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Schulz, A. (author)
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Schwanke, U. (author)
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Schwarzburg, S. (author)
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Schwemmer, S. (author)
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Sol, H. (author)
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Spengler, G. (author)
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Spies, F. (author)
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Stawarz, L. (author)
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Steenkamp, R. (author)
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Stegmann, C. (author)
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Stinzing, F. (author)
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Stycz, K. (author)
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Sushch, I. (author)
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Szostek, A. (author)
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Tavernet, J. -P (author)
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Tavernier, T. (author)
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Taylor, A. M. (author)
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Terrier, R. (author)
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Tluczykont, M. (author)
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Trichard, C. (author)
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Valerius, K. (author)
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van Eldik, C. (author)
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van Soelen, B. (author)
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Vasileiadis, G. (author)
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Venter, C. (author)
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Viana, A. (author)
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Vincent, P. (author)
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Voelk, H. J. (author)
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Volpe, F. (author)
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Vorster, M. (author)
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Vuillaume, T. (author)
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Wagner, S. J. (author)
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Wagner, P. (author)
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Ward, M. (author)
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Weidinger, M. (author)
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Weitzel, Q. (author)
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White, R. (author)
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Wierzcholska, A. (author)
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Willmann, P. (author)
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Woernlein, A. (author)
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Wouters, D. (author)
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Zabalza, V. (author)
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Zacharias, M. (author)
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Zajczyk, A. (author)
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Zdziarski, A. A. (author)
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Zech, A. (author)
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Zechlin, H. -S (author)
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(creator_code:org_t)
- 2014-03-28
- 2014
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 564, s. A9-
- Related links:
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https://doi.org/10.1...
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- Context. About 40% of the observation time of the High Energy Stereoscopic System (H.E.S.S.) is dedicated to studying active galactic nuclei (AGN), with the aim of increasing the sample of known extragalactic very-high-energy (VHE, E > 100 GeV) sources and constraining the physical processes at play in potential emitters. Aims. H.E.S.S. observations of AGN, spanning a period from April 2004 to December 2011, are investigated to constrain their gamma-ray fluxes. Only the 47 sources without significant excess detected at the position of the targets are presented. Methods. Upper limits on VHE fluxes of the targets were computed and a search for variability was performed on the nightly time scale. Results. For 41 objects, the flux upper limits we derived are the most constraining reported to date. These constraints at VHE are compared with the flux level expected from extrapolations of Fermi-LAT measurements in the two-year catalog of AGN. The H.E.S.S. upper limits are at least a factor of two lower than the extrapolated Fermi-LAT fluxes for 11 objects Taking into account the attenuation by the extragalactic background light reduces the tension for all but two of them, suggesting intrinsic curvature in the high-energy spectra of these two AGN. Conclusions. Compilation efforts led by current VHE instruments are of critical importance for target-selection strategies before the advent of the Cherenkov Telescope Array (CTA).
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- gamma rays: galaxies
- galaxies: active
- Astropartikelfysik
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Abramowski, A.
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Aharonian, F.
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Benkhali, F. Ait
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Akhperjanian, A. ...
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Anguener, E.
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Anton, G.
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show more...
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Balenderan, S.
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Balzer, A.
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Barnacka, A.
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Becherini, Yvonn ...
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Tjus, J. Becker
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Bernloehr, K.
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Birsin, E.
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Bissaldi, E.
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Biteau, J.
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Boettcher, M.
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Boisson, C.
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Bolmont, J.
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Bordas, P.
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Brucker, J.
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Brun, F.
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Brun, P.
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Bulik, T.
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Carrigan, S.
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Casanova, S.
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Cerruti, M.
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Punch, Michael
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Chalme-Calvet, R ...
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Chaves, R. C. G.
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Cheesebrough, A.
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Chretien, M.
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Colafrancesco, S ...
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Cologna, G.
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Conrad, Jan
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Couturier, C.
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Cui, Y.
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Dalton, M.
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Daniel, M. K.
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Davids, I. D.
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Degrange, B.
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Deil, C.
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dewilt, P.
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Dickinson, Hugh ...
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Djannati-Atai, A ...
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Domainko, W.
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Drury, L. O 'C.
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Dubus, G.
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Dutson, K.
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Dyks, J.
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Dyrda, M.
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Edwards, T.
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Egberts, K.
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Eger, P.
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Espigat, P.
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Farnier, Christi ...
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Fegan, S.
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Feinstein, F.
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Fernandes, M. V.
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Fernandez, D.
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Fiasson, A.
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Fontaine, G.
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Foerster, A.
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Fuessling, M.
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Gajdus, M.
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Gallant, Y. A.
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Garrigoux, T.
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Giavitto, G.
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Giebels, B.
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Glicenstein, J. ...
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Grondin, M. -H
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Grudzinska, M.
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Haeffner, S.
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Hahn, J.
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Harris, J.
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Heinzelmann, G.
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Henri, G.
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Hermann, G.
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Hervet, O.
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Hillert, A.
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Hinton, J. A.
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Hofmann, W.
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Hofverberg, P.
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Holler, M.
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Horns, D.
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Jacholkowska, A.
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Jahn, C.
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Jamrozy, M.
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Janiak, M.
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Jankowsky, F.
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Jung, I.
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Kastendieck, M. ...
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Katarzynski, K.
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Katz, U.
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Kaufmann, S.
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Khelifi, B.
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Kieffer, M.
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Klepser, S.
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Klochkov, D.
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Kluzniak, W.
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Kneiske, T.
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Kolitzus, D.
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Komin, Nu.
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Kosack, K.
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Krakau, S.
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Krayzel, F.
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Krueger, P. P.
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Laffon, H.
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Lamanna, G.
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Lefaucheur, J.
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Lemiere, A.
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Lemoine-Goumard, ...
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Lenain, J. -P
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Lennarz, D.
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Lohse, T.
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Lopatin, A.
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Lu, C. -C
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Marandon, V.
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Marcowith, A.
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Marx, R.
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Maurin, G.
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Maxted, N.
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Mayer, M.
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McComb, T. J. L.
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Mehault, J.
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Meintjes, P. J.
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Menzler, U.
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Meyer, Manuel
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Moderski, R.
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Mohamed, M.
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Moulin, E.
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Murach, T.
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Naumann, C. L.
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de Naurois, M.
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Niemiec, J.
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Nolan, S. J.
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Oakes, L.
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Ohm, S.
-
Wilhelmi, E. de ...
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Opitz, B.
-
Ostrowski, M.
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Oya, I.
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Panter, M.
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Parsons, R. D.
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Arribas, M. Paz
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Pekeur, N. W.
-
Pelletier, G.
-
Perez, J.
-
Petrucci, P. -O
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Peyaud, B.
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Pita, S.
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Poon, H.
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Puehlhofer, G.
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Punch, M.
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Quirrenbach, A.
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Raab, S.
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Raue, M.
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Reimer, A.
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Reimer, O.
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Renaud, M.
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Reyes, R. de Los
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Rieger, F.
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Rob, L.
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Romoli, C.
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Rosier-Lees, S.
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Rowell, G.
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Rudak, B.
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Rulten, C. B.
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Sahakian, V.
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Sanchez, D. A.
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Santangelo, A.
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Schlickeiser, R.
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Schuessler, F.
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Schulz, A.
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Schwanke, U.
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Schwarzburg, S.
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Schwemmer, S.
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Sol, H.
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Spengler, G.
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Spies, F.
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Stawarz, L.
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Steenkamp, R.
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Stegmann, C.
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Stinzing, F.
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Stycz, K.
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Sushch, I.
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Szostek, A.
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Tavernet, J. -P
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Tavernier, T.
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Taylor, A. M.
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Terrier, R.
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Tluczykont, M.
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Trichard, C.
-
Valerius, K.
-
van Eldik, C.
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van Soelen, B.
-
Vasileiadis, G.
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Venter, C.
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Viana, A.
-
Vincent, P.
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Voelk, H. J.
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Volpe, F.
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Vorster, M.
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Vuillaume, T.
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Wagner, S. J.
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Wagner, P.
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Ward, M.
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Weidinger, M.
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Weitzel, Q.
-
White, R.
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Wierzcholska, A.
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Willmann, P.
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Woernlein, A.
-
Wouters, D.
-
Zabalza, V.
-
Zacharias, M.
-
Zajczyk, A.
-
Zdziarski, A. A.
-
Zech, A.
-
Zechlin, H. -S
-
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astronomy and As ...
- By the university
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Stockholm University
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Linnaeus University