Multi-wavelength observations of H 2356-309

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: van Eldik C, Abramowski A, Acero F, Aharonian F, Akhperjanian AG, Anton G, De Almeida UB, Bazer-Bachi AR, Becherini Y, Behera B, Benbow W, Bernloehr K, Bochow A, Boisson C, Bolmont J, Borrel V, Brucker J, Brun F, Brun P, Buehler R, Bulik T, Buesching I, Boutelier T, Chadwick PM, Charbonnier A, Chaves RCG, Cheesebrough A, Conrad J, Chounet LM, Clapson AC, Coignet G, Costamante L, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dickinson HJ, Djannati-Atai A, Domainko W, Drury LO, Dubois F, Dubus G, Dyks J, Dyrda M, Egberts K, Eger P, Espigat P, Fallon L, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fiasson A, Foerster A, Fontaine G, Fuessling M, Gabici S, Gallant YA, Gerard L, Gerbig D, Giebels B, Glicenstein JF, Glueck B, Goret P, Göring D, Hampf D, Hauser M, Heinz S, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Hofverberg P, Holleran M, Hoppe S, Horns D, Jacholkowska A, De Jager OC, Jahn C, Jung I, Katarzynski K, Katz U, Kaufmann S, Kerschhaggl M, Khangulyan D, Khelifi B, Keogh D, Klochkov D, Kluzniak W, Kneiske TM, Komin N, Kosack K, Kossakowski R, Lamanna G, Lenain JP, Lohse T, Lu CC, Marandon V, Marcowith A, Masbou J, Maurin D, Mccomb TJL, Medina MC, Mehault J, Moderski R, Moulin E, Naumann-Godo M, De Naurois M, Nedbal D, Nekrassov D, Nguyen N, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, Wilhelmi EDO, Opitz B, Orford KJ, Ostrowski M, Panter M, Arribas MP, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Puehlhofer G, Punch M, Quirrenbach A, Raubenheimer BC, Raue M, Rayner SM, Reimer O, Renaud M, De Los Reyes R, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Ruppel J, Ryde F, Sahakian V, Santangelo A, Schlickeiser R, Schoeck FM, Schoenwald A, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sushch I, Sikora M, Skilton JL, Sol H, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Szostek A, Tam PH, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, Valerius K, Van Eldik C, Vasileiadis G, Venter C, Venter L, Vialle JP, Viana A, Vincent P, Vivier M, Voelk HJ, Volpe F, Vorobiov S, Wagner SJ, Ward M, Zdziarski AA, Zech A, Zechlin HS
Zeitschrift: Astronomy & Astrophysics
Verlag: EDP Sciences
Jahr der Veröffentlichung: 2010
Band: 516
Heftnummer: 6
ISSN: 0004-6361
Sprache: Englisch


Abstract


Aims. The properties of the broad-band emission from the high-frequency peaked BL Lac H 2356-309 (z = 0.165) are investigated. Methods. Very high energy (VHE; E > 100 GeV) observations of H 2356-309 were performed with the High Energy Stereoscopic System (HESS) from 2004 through 2007. Simultaneous optical/UV and X-ray observations were made with the XMM-Newton satellite on June 12/13 and June 14/15, 2005. NRT radio observations were also contemporaneously performed in 2005. ATOM optical monitoring observations were also made in 2007. Results. A strong VHE signal, ∼13σ total, was detected by HESS after the four years HESS observations (116.8 h live time). The integral flux above 240 GeV is I(>240 GeV) = (3.06 ± 0.26 ± 0.61) × 10 cm s, corresponding to ∼1.6% of the flux observed from the Crab Nebula. A time-averaged energy spectrum is measured from 200 GeV to 2 TeV and is characterized by a power law (photon index of Γ = 3.06 ± 0.15 ± 0.10). Significant small-amplitude variations in the VHE flux from H 2356-309 are seen on time scales of months and years, but not on shorter time scales. No evidence for any variations in the VHE spectral slope are found within these data. The XMM-Newton X-ray measurements show a historically low X-ray state, characterized by a hard, broken-power-law spectrum on both nights. Conclusions. The broad-band spectral energy distribution (SED) of the blazar can be adequately fit using a simple one-zone synchrotron self-Compton (SSC) model. In the SSC scenario, higher VHE fluxes could be expected in the future since the observed X-ray flux is at a historically low level. © 2010 ESO.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Anton, Gisela Prof. Dr.
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
Brucker, Julia Dr. rer. nat.
Lehrstuhl für Physik
Eger, Peter
Lehrstuhl für Physik
Göring, Daniel Dr. rer. nat.
Lehrstuhl für Physik
Heinz, Sebastian
Lehrstuhl für Physik
Jahn, Constanze
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)
Katz, Uli Prof. Dr.
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Stinzing, Friedrich Dr.
Lehrstuhl für Physik
Valerius, Kathrin Dr.
Lehrstuhl für Physik
van Eldik, Christopher Prof. Dr.
Professur für Experimentalphysik


Einrichtungen weiterer Autorinnen und Autoren

Commissariat à l'énergie atomique
Dublin Institute for Advanced Studies (DIAS)
Durham University
Eberhard Karls Universität Tübingen
École Polytechnique - Université Paris-Saclay
Humboldt-Universität zu Berlin
Institute of Nuclear Physics PAN / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego PAN
Jagiellonian University / Uniwersytet Jagielloński (UJ)
Leopold-Franzens-Universität Innsbruck / University of Innsbruck
Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics
Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences
Nicolaus Copernicus University / Uniwersytet Mikołaja Kopernika w Toruniu (UMK)
Noordwes-Universiteit / North-West University
Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)
Ruhr-Universität Bochum (RUB)
Ruprecht-Karls-Universität Heidelberg
Stockholm University / Stockholms universitet
Universität Hamburg
Université Joseph Fourier (UJF Grenoble 1)
Université Toulouse III - Paul Sabatier
University of Adelaide
University of Leeds
University of Montpellier / Université Montpellier
University of Namibia (UNAM)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
University of Savoy Mont Blanc / Université Savoie Mont Blanc
University of Warsaw / Uniwersytet Warszawski
Univerzita Karlova v Praze / Charles University in Prague
Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ


Zitierweisen

APA:
van Eldik, C., Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A.G., Anton, G.,... Zechlin, H.-S. (2010). Multi-wavelength observations of H 2356-309. Astronomy & Astrophysics, 516(6). https://dx.doi.org/10.1051/0004-6361/201014321

MLA:
van Eldik, Christopher, et al. "Multi-wavelength observations of H 2356-309." Astronomy & Astrophysics 516.6 (2010).

BibTeX: 

Zuletzt aktualisiert 2018-23-10 um 21:50