Detection of extended vhe gamma ray emission from G106.3+2.7 with veritas

  • V. A. Acciari
  • , E. Aliu
  • , T. Arlen
  • , T. Aune
  • , M. Bautista
  • , M. Beilicke
  • , W. Benbow
  • , D. Boltuch
  • , S. M. Bradbury
  • , J. H. Buckley
  • , V. Bugaev
  • , Y. Butt
  • , K. Byrum
  • , A. Cannon
  • , A. Cesarini
  • , Y. C. Chow
  • , L. Ciupik
  • , P. Cogan
  • , W. Cui
  • , R. Dickherber
  • T. Ergin, S. J. Fegan, J. P. Finley, P. Fortin, L. Fortson, A. Furniss, D. Gall, G. H. Gillanders, E. V. Gotthelf, J. Grube, R. Guenette, G. Gyuk, D. Hanna, J. Holder, D. Horan, C. M. Hui, T. B. Humensky, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, A. Konopelko, H. Krawczynski, F. Krennrich, M. J. Lang, S. Lebohec, G. Maier, A. McCann, M. McCutcheon, J. Millis

Research output: Contribution to journalArticlepeer-review

79 Scopus citations

Abstract

We report the detection of very-high-energy (VHE) gamma-ray emission from supernova remnant (SNR) G106.3+2.7. Observations performed in 2008 with the VERITAS atmospheric Cherenkov gamma-ray telescope resolve extended emission overlapping the elongated radio SNR. The 7.3σ (pre-trials) detection has a full angular extent of roughly 06 by 04. Most notably, the centroid of the VHE emission is centered near the peak of the coincident 12CO (J = 1-0) emission, 04 away from the pulsar PSR J2229+6114, situated at the northern end of the SNR. Evidently the current-epoch particles from the pulsar wind nebula are not participating in the gamma-ray production. The VHE energy spectrum measured with VERITAS is well characterized by a power law dN/dE = N 0(E/3 TeV) with a differential index of Γ = 2.29 ± 0.33stat ± 0.30sys and a flux of N 0 = (1.15 ± 0.27stat ±0.35sys) × 10-13 cm-2 s-1 TeV-1. The integral flux above 1 TeV corresponds to ∼5 percent of the steady Crab Nebula emission above the same energy. We describe the observations and analysis of the object and briefly discuss the implications of the detection in a multiwavelength context.

Original languageEnglish (US)
Pages (from-to)L6-L9
JournalAstrophysical Journal
Volume703
Issue number1 PART 2
DOIs
StatePublished - 2009

Keywords

  • Gamma rays: observations
  • Supernova remnants

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