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

Acciari, V A; Benbow, W; Aliu, E; Boltuch, D; Arlen, T; Celik, O; Aune, T; Bautista, M; Cogan, P; Beilicke, M; Buckley, J H; Bugaev, V; Dickherber, R; Bradbury, S M; Byrum, K; Cannon, A; Cesarini, A; Ciupik, L; Cui, W; Duke, C

doi:10.1088/0004-637X/706/2/L275

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

Journal Article · Tue Dec 01 04:00:00 EST 2009 · Astrophysical Journal (Online)

DOI:https://doi.org/10.1088/0004-637X/706/2/L275· OSTI ID:21385090

Acciari, V A; Benbow, W ^[1]; Aliu, E; Boltuch, D ^[2]; Arlen, T; Celik, O ^[3]; Aune, T ^[4]; Bautista, M; Cogan, P ^[5]; Beilicke, M; Buckley, J H; Bugaev, V; Dickherber, R ^[6]; Bradbury, S M ^[7]; Byrum, K ^[8]; Cannon, A ^[9]; Cesarini, A ^[10]; Ciupik, L ^[11]; Cui, W ^[12]; Duke, C ^[13]

Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States)
Department of Physics and Astronomy and the Bartol Research Institute, University of Delaware, Newark, DE 19716 (United States)
Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)
Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 (United States)
Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada)
Department of Physics, Washington University, St. Louis, MO 63130 (United States)
School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT (United Kingdom)
Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 (United States)
School of Physics, University College Dublin, Belfield, Dublin 4, Republic of Ireland (Ireland)
School of Physics, National University of Ireland, Galway, Republic of Ireland (Ireland)
Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States)
Department of Physics, Purdue University, West Lafayette, IN 47907 (United States)
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), Journal Name: Astrophysical Journal (Online) Journal Issue: 2 Vol. 706; ISSN 1538-4357

Country of Publication:: United States

Language:: English

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γ-RAY SPECTRAL EVOLUTION OF NGC 1275 OBSERVED WITH FERMI LARGE AREA TELESCOPE Kataoka, J.; Stawarz, Ł.; Cheung, C. C. The Astrophysical Journal, Vol. 715, Issue 1 https://doi.org/10.1088/0004-637x/715/1/554	journal	April 2010
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Emission from the galaxy NGC 1275 at high and very high energies and its origin Sinitsyna, V. G.; Sinitsyna, V. Yu. Astronomy Letters, Vol. 40, Issue 2-3 https://doi.org/10.1134/s1063773714030074	journal	February 2014
Very high energy gamma-ray emission of NGC 1275 and 3c382 and the possible activity nature of the Seyfert Galaxies Sinitsyna, V. G.; Sinitsyna, V. Y. EPJ Web of Conferences, Vol. 52 https://doi.org/10.1051/epjconf/20135210005	journal	January 2013
Constraints on diffuse gamma-ray emission from structure formation processes in the Coma cluster Zandanel, Fabio; Ando, Shin'ichiro arXiv https://doi.org/10.48550/arxiv.1312.1493	text	January 2013

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

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