Discovery of very high energy gamma-ray emission from the BL Lacertae object H 
2356-309 with the HESS Cherenkov telescopes

Aharonian, Felix; Akhperjanian, A. G.; Bazer-Bachi, A. R.; Beilicke, M.; Benbow, Wystan; Berge, David; Braun, Isabel; Bernlöhr, Konrad; Bolz, Oliver; Boisson, C:; Glicenstein, J.F.; Breitling, F.; Brown, A. M.; Dickinson, H.J.; Chadwick, P. M.; Egberts, Kathrin; Chounet, L.-M.; Cornils, R.; Costamante, L.; Degrange, B.; Djannati-Atai, A.; Drury, L.O'C.; Emmanoulopoulos, D.; Espigat, P.; Feinstein, F.; Jacholkowska, A.; Fontaine, G.; Funk, Stefan; Gallant, Y. A.; Giebels, B.; Borrel, V.; Goret, P.; Dubus, G.; Hadjichristidis, C.; Hauser, M.; Heinzelmann, G.; Henri, G.; Hermann, German; Hinton, James Anthony; Hofmann, Werner; Holleran, M.; Horns, D.; de Jager, O. C.; Khélifi, Bruno; Komin, N.; Konopelko, A.; Latham, I. J.; Le Gallou, R.; Lemoine-Goumard, M.; Lemière, A.; Lohse, T.; Martin, J. M.; Marcowith, A.; Masterson, Conor; McComb, T. J. L.; de Naurois, M.; Nolan, S. J.; Noutsos, A.; Orford, K. J.; Osborne, J. L.; Ouchrif, M.; Panter, Michael; Pelletier, G.; Pita, S.; Pühlhofer, G.; Punch, M.; Raubenheimer, B. C.; Raue, M.; Rayner, S. M.; Reimer, A.; Reimer, O.; Ripken, J.; Terrier, R.; Rob, L.; Rolland, L.; Rowell, Gavin; Sahakian, V.; Saugé, L.; Schlenker, S.; Schlickeiser, R.; Schwanke, U.; Sol, H.; Steenkamp, R.; Stegmann, C.; Tavernet, J.-P-; Théoret, C. G.; Tluczykont, M.; Venter, C.; Vasileiadis, G.; Vincent, P.; Völk, H. J.; Wagner, S. J.; Martineau-Huynh, O.; Spangler, D.; Bühler, Rolf; Büsching, I.; Carrigan, Svenja; Hauser, Dominik; Jacholkowska, A.; Nedbal, Dalibor; Spanier, F.; Superina, G.; Terrier, R.; van Eldik, Christopher; Ward, M.

doi:10.1051/0004-6361:20054732

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Discovery of very high energy gamma-ray emission from the BL Lacertae object H 2356-309 with the HESS Cherenkov telescopes

MPG-Autoren

/persons/resource/persons30244

Aharonian, Felix
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30247

Akhperjanian, A. G.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30290

Beilicke, M.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30293

Benbow, Wystan
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30296

Berge, David
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30333

Braun, Isabel
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30300

Bernlöhr, Konrad
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30322

Bolz, Oliver
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30521

Glicenstein, J.F.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30436

Egberts, Kathrin
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30380

Cornils, R.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30382

Costamante, L.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30414

Djannati-Atai, A.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30460

Feinstein, F.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30497

Funk, Stefan
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30502

Gallant, Y. A.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30428

Dubus, G.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30584

Hermann, German
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30597

Hinton, James Anthony
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30605

Hofmann, Werner
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30623

Horns, D.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30670

Khélifi, Bruno
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30703

Konopelko, A.
Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30798

Masterson, Conor
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30397

de Naurois, M.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30865

Orford, K. J.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30869

Osborne, J. L.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30878

Panter, Michael
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30914

Pühlhofer, G.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30923

Raue, M.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30959

Rowell, Gavin
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30976

Saugé, L.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31135

Vasileiadis, G.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31141

Völk, H. J.
Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30350

Bühler, Rolf
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30367

Carrigan, Svenja
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30573

Hauser, Dominik
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30841

Nedbal, Dalibor
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31132

van Eldik, Christopher
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Zitation

Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., et al. (2006). Discovery of very high energy gamma-ray emission from the BL Lacertae object H 2356-309 with the HESS Cherenkov telescopes. Astronomy and Astrophysics, 455(2), 461-466. doi:10.1051/0004-6361:20054732.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0011-8748-6

Zusammenfassung

The extreme synchrotron BL Lac object H 2356-309, located at a redshift of z = 0.165, was observed from June to December 2004 with a total exposure of 40 h live-time with the HESS (High Energy Stereoscopic System) array of atmospheric-Cherenkov telescopes (ACTs). Analysis of this data set yields, for the first time, a strong excess of 453 -rays (10 standard deviations above background) from H 2356-309, corresponding to an observed integral flux above 200 GeV of I(>200 GeV) = (4.1 0.5) 10-12 cm-2 s-1 (statistical error only). The differential energy spectrum of the source between 200 GeV and 1.3 TeV is well-described by a power law with a normalisation (at 1 TeV) of N0 = (4.1 0.5) 10-13 cm-2 s-1 TeV-1 and a photon index of = . H 2356-309 is one of the most distant BL Lac objects detected at very-high-energy -rays so far. Results from simultaneous observations from ROTSE-III (optical), RXTE (X-rays) and NRT (radio) are also included and used together with the HESS data to constrain a single-zone homogeneous synchrotron self-Compton (SSC) model. This model provides an adequate fit to the HESS data when using a reasonable set of model parameters.