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Title: VERITAS UPPER LIMIT ON THE VERY HIGH ENERGY EMISSION FROM THE RADIO GALAXY NGC 1275

Journal Article · · Astrophysical Journal (Online)
;  [1]; ;  [2]; ;  [3];  [4]; ;  [5]; ; ; ;  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [13]
  1. Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States)
  2. Department of Physics and Astronomy and the Bartol Research Institute, University of Delaware, Newark, DE 19716 (United States)
  3. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)
  4. Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 (United States)
  5. Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada)
  6. Department of Physics, Washington University, St. Louis, MO 63130 (United States)
  7. School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT (United Kingdom)
  8. Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 (United States)
  9. School of Physics, University College Dublin, Belfield, Dublin 4, Republic of Ireland (Ireland)
  10. School of Physics, National University of Ireland, Galway, Republic of Ireland (Ireland)
  11. Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States)
  12. Department of Physics, Purdue University, West Lafayette, IN 47907 (United States)
  13. Department of Physics, Grinnell College, Grinnell, IA 50112-1690 (United States)

The recent detection by the Fermi gamma-ray space telescope of high-energy gamma-rays from the radio galaxy NGC 1275 makes the observation of the very high energy (VHE: E>100 GeV) part of its broadband spectrum particularly interesting, especially for the understanding of active galactic nuclei with misaligned multi-structured jets. The radio galaxy NGC 1275 was recently observed by VERITAS at energies above 100 GeV for about 8 hr. No VHE gamma-ray emission was detected by VERITAS from NGC 1275. A 99% confidence level upper limit of 2.1% of the Crab Nebula flux level is obtained at the decorrelation energy of approximately 340 GeV, corresponding to 19% of the power-law extrapolation of the Fermi Large Area Telescope result.

OSTI ID:
21385090
Journal Information:
Astrophysical Journal (Online), Vol. 706, Issue 2; Other Information: DOI: 10.1088/0004-637X/706/2/L275; ISSN 1538-4357
Country of Publication:
United States
Language:
English

Cited By (13)

Deep observation of the NGC 1275 region with MAGIC: search of diffuse γ -ray emission from cosmic rays in the Perseus cluster journal April 2016
Very high energy gamma-ray emission of NGC 1275 and 3c382 and the possible activity nature of the Seyfert Galaxies journal January 2013
γ-RAY SPECTRAL EVOLUTION OF NGC 1275 OBSERVED WITH FERMI LARGE AREA TELESCOPE journal April 2010
On the physics of radio haloes in galaxy clusters: scaling relations and luminosity functions journal December 2013
Constraints on diffuse gamma-ray emission from structure formation processes in the Coma cluster journal March 2014
High-energy γ-ray properties of the Fanaroff-Riley type I radio galaxy NGC 1275: High-energy γ-ray properties of the FR I radio galaxy NGC 1275 journal March 2011
Emission from the galaxy NGC 1275 at high and very high energies and its origin journal February 2014
NEUTRINO, γ -RAY, AND COSMIC-RAY FLUXES FROM THE CORE OF THE CLOSEST RADIO GALAXIES journal October 2016
Deep observation of the NGC 1275 region with MAGIC: search of diffuse $\gamma$-ray emission from cosmic rays in the Perseus cluster text January 2016
On the Physics of Radio Halos in Galaxy Clusters: Scaling Relations and Luminosity Functions text January 2013
Constraints on diffuse gamma-ray emission from structure formation processes in the Coma cluster text January 2013
Emission from the Galaxy NGC 1275 at High and Very High Energies and its Origin text January 2014
Deep observation of the NGC 1275 region with MAGIC: search of diffuse gamma-ray emission from cosmic rays in the Perseus cluster text January 2016