2016
article
Discovery of Very High Energy Gamma Rays from
S. Archambault, Avery Archer, A. Barnacka, B. Behera, M. Beilicke, W. Benbow, K. Berger, R. Bird, J. H. Buckley, V. Bugaev, J. V Cardenzana, Matteo Cerruti, X. Chen, Jessie L. Christiansen, E. Collins-Hughes, M. P. Connolly, Wei Cui, H. J. Dickinson, J. Dumm, J. Eisch, M. Errando, A. Falcone, S. Federici, Q. C. Feng, Henrike Fleischhack, L. Fortson, Amy Furniss, G. H. Gillanders, S. Godambe, Sean C. Griffin, S. Griffiths, J. Grube, G. Gyuk, David S. Hanna, Jamie Holder, G. Hughes, C. A. Johnson, P. Kaaret, P. Kar, M. Kertzman, Y. Khassen, David B Kieda, Henric S. Krawczynski, Sajan Kumar, M. J. Lang, A. S Madhavan, Gernot Maier, S. McArthur, A. McCann, Kevin J. Meagher, J. Millis, P. Moriarty, Thomas Nelson, Daniel Nieto, R. A. Ong, A. Nepomuk Otte, Jeremy S Perkins, MARTIN POHL, A. Popkow, H. Prokoph, Elisa Pueschel, J. Quinn, K. Ragan, Jean-François Rajotte, L. C. Reyes, P. T. Reynolds, G. T. Richards, E. Roache, G. H. Sembroski, K. Shahinyan, A. W. Smith, D. Staszak, Kevin Sweeney, Igor Telezhinsky, J. V. Tucci, J. Tyler, A. Varlotta, Vladimir V. Vassiliev, S. P. Wakely, R. Welsing, A. Wilhelm, David A. Williams, B. Zitzer
2Citations signalées, ce qui n’est pas une note de qualité
0Institutions déclarées
0Pays d’affiliation déclarés
Le résumé fourni par la source
The BL Lacertae object 1ES 1440+122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and totalling 53 hours, resulted in the discovery of $\gamma$-ray emission from the blazar, which has a redshift $z$=0.163. 1ES 1440+122 is detected at a statistical significance of 5.5 standard deviations above the background with an integral flux of (2.8$\pm0.7_{\mathrm{stat}}\pm0.8_{\mathrm{sys}}$) $\times$ 10$^{-12}$ cm$^{-2}$ s$^{-1}$ (1.2\% of the Crab Nebula's flux) above 200 GeV. The measured spectrum is described well by a power law from 0.2 TeV to 1.3 TeV with a photon index of 3.1 $\pm$ 0.4$_{\mathrm{stat}}$ $\pm$ 0.2$_{\mathrm{sys}}$. Quasi-simultaneous multi-wavelength data from the Fermi Large Area Telescope (0.3--300 GeV) and the Swift X-ray Telescope (0.2--10 keV) are additionally used to model the properties of the emission region. A synchrotron self-Compton model produces a good representation of the multi-wavelength data. Adding an external-Compton or a hadronic component also adequately describes the data.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
Aucun DOI disponible pour le contrôle Crossref.
Les sujets associés
Astrophysics and Cosmic PhenomenaComputational Physics and Python ApplicationsParticle Detector Development and Performance