OBSERVATION OF EXTENDED VERY HIGH ENERGY EMISSION FROM THE SUPERNOVA REMNANT IC 443 WITH VERITAS
| العنوان: | OBSERVATION OF EXTENDED VERY HIGH ENERGY EMISSION FROM THE SUPERNOVA REMNANT IC 443 WITH VERITAS |
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| المؤلفون: | R. A. Ong, Thomas Weisgarber, S. LeBohec, S. M. Bradbury, A. Cannon, D. Pandel, D. Horan, P. Cogan, J. Grube, David Kieda, L. Ciupik, P. T. Reynolds, A. McCann, Lucy Fortson, M. Kertzman, M. K. Daniel, E. Aliu, H. Krawczynski, A. Varlotta, Gernot Maier, S. P. Swordy, V. V. Vassiliev, Martin Pohl, S. P. Wakely, Daniel Gall, K. Ragan, M. Wood, M. Beilicke, G. Finnegan, T. B. Humensky, A. W. Smith, B. Zitzer, A. Konopelko, R. G. Wagner, C. Duke, M. Schroedter, L. Valcarcel, Vikram V. Dwarkadas, P. Moriarty, Geza Gyuk, A. Weinstein, T. Arlen, P. Colin, A. N. Otte, A. Furniss, J. H. Buckley, P. Kaaret, Tulun Ergin, F. Krennrich, P. Fortin, S. Vincent, D. S. Hanna, Wystan Benbow, M. Theiling, C. M. Hui, Y. Butt, J. P. Finley, V. Bugaev, G. H. Sembroski, J. A. Toner, T. C. Weekes, R. Dickherber, A. Imran, E. Hays, J. S. Perkins, John Kildea, D. A. Williams, R. Guenette, J. Millis, O. Celik, K. Byrum, Wei Cui, Stephanie Wissel, T. Aune, Y. C. K. Chow, S. J. Fegan, D. Steele, V. A. Acciari, M. J. Lang, H. J. Rose, N. Karlsson, A. Cesarini, John L. Quinn, M. Bautista, K. G. Gibbs, Jamie Holder, L. C. Reyes, E. Roache, J. E. Ward, G. H. Gillanders, S. Godambe, M. McCutcheon |
| المساهمون: | OpenMETU |
| المصدر: | The Astrophysical Journal. 698:L133-L137 |
| بيانات النشر: | American Astronomical Society, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Physics, nebula, 010308 nuclear & particles physics, ic-443, Molecular cloud, cosmic-rays, Flux, Astronomy and Astrophysics, Context (language use), xmm-newton observations, molecular clouds, Astrophysics, gamma-ray emission, 01 natural sciences, Pulsar wind nebula, ism: individual (ic 443=ver j0616.9+2230, = magic j0616+225), radiation, Space and Planetary Science, 0103 physical sciences, Supernova remnant, 010303 astronomy & astrophysics, gamma rays: observations, magic telescope, discovery, pulsar |
| الوصف: | We present evidence that the very high energy (VHE, E > 100 GeV) gamma-ray emission coincident with the supernova remnant IC 443 is extended. IC 443 contains one of the best studied sites of supernova remnant/molecular cloud interaction and the pulsar wind nebula CXOU J061705.3+222127, both of which are important targets for VHE observations. VERITAS observed IC 443 for 37.9 hr during 2007 and detected emission above 300 GeV with an excess of 247 events, resulting in a significance of 8.3 standard deviations (sigma) before trials and 7.5 sigma after trials in a point-source search. The emission is centered at 6(h)16(m)51(s)+22 degrees 30'11 '' (J2000)+/- 0 degrees.03(stat)+/- 0 degrees.08(sys), with an intrinsic extension of 0 degrees.16 +/- 0 degrees.03(stat)+/- 0 degrees.04(sys). The VHE spectrum is well fit by a power law (dN/dE = N(0) x(E/TeV)(-Gamma)) with a photon index of 2.99 +/- 0.38(stat)+/- 0.3(sys) and an integral flux above 300 GeV of (4.63 +/- 0.90(stat)+/- 0.93(sys)) x 10(-12) cm(-2) s(-1). These results are discussed in the context of existing models for gamma-ray production in IC 443. |
| وصف الملف: | application/pdf |
| تدمد: | 1538-4357 0004-637X |
| DOI: | 10.1088/0004-637x/698/2/l133 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c47175e089b39e4e612de507d12c40f8 https://doi.org/10.1088/0004-637x/698/2/l133 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....c47175e089b39e4e612de507d12c40f8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15384357 0004637X |
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| DOI: | 10.1088/0004-637x/698/2/l133 |