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Title: A SEARCH FOR ENHANCED VERY HIGH ENERGY GAMMA-RAY EMISSION FROM THE 2013 MARCH CRAB NEBULA FLARE

In 2013 March, a flaring episode from the Crab Nebula lasting ∼2 weeks was detected by Fermi-LAT (Large Area Telescope on board the Fermi Gamma-ray Space Telescope). The Very Energetic Radiation Imaging Telescope Array System (VERITAS) provides simultaneous observations throughout this period. During the flare, Fermi-LAT detected a 20 fold increase in flux above the average synchrotron flux >100 MeV seen from the Crab Nebula. Simultaneous measurements with VERITAS are consistent with the non-variable long-term average Crab Nebula flux at TeV energies. Assuming a linear correlation between the very high energy flux change >1 TeV and the flux change seen in the Fermi-LAT band >100 MeV during the period of simultaneous observations, the linear correlation factor can be constrained to be at most 8.6 × 10{sup –3} with 95% confidence.
Authors:
;  [1] ;  [2] ;  [3] ; ;  [4] ;  [5] ;  [6] ;  [7] ; ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] ; ;  [13] ;  [14] ;  [15] ;  [16] more »; « less
  1. Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027 (United States)
  2. Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada)
  3. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)
  4. Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States)
  5. Department of Physics and Astronomy and the Bartol Research Institute, University of Delaware, Newark, DE 19716 (United States)
  6. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)
  7. Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 (United States)
  8. Department of Physics, Washington University, St. Louis, MO 63130 (United States)
  9. Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 (United States)
  10. Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm (Germany)
  11. Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States)
  12. School of Physics, National University of Ireland Galway, University Road, Galway (Ireland)
  13. Department of Physics, Purdue University, West Lafayette, IN 47907 (United States)
  14. School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)
  15. Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802 (United States)
  16. DESY, Platanenallee 6, D-15738 Zeuthen (Germany)
Publication Date:
OSTI Identifier:
22364284
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 781; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CORRELATIONS; CRAB NEBULA; FLARING; GAMMA ASTRONOMY; GAMMA RADIATION; MEV RANGE; SPACE; SYNCHROTRON RADIATION; TELESCOPES; TEV RANGE