DISCOVERY OF A VERY HIGH ENERGY GAMMA-RAY SIGNAL FROM THE 3C 66A/B REGION
Open Access
- 21 January 2009
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 692 (1) , L29-L33
- https://doi.org/10.1088/0004-637x/692/1/l29
Abstract
The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 hr in 2007 August-December. The observations resulted in the discovery of a γ-ray source centered at celestial coordinates R.A. = 2h23m12s and decl. = 43°07 (MAGIC J0223+430), coinciding with the nearby radio galaxy 3C 66B. A possible association of the excess with the blazar 3C 66A is discussed. The energy spectrum of MAGIC J0223+430 follows a power law with a normalization of (1.7 ± 0.3stat ± 0.6syst) × 10–11 TeV–1 cm–2 s–1 at 300 GeV and a photon index Γ = –3.10 ± 0.31stat ± 0.2syst.Keywords
All Related Versions
This publication has 37 references indexed in Scilit:
- Very High Energy Gamma-Ray Observations of Strong Flaring Activity in M87 in 2008 FebruaryThe Astrophysical Journal, 2008
- Formation of hard very high energy gamma-ray spectra of blazars due to internal photon-photon absorptionMonthly Notices of the Royal Astronomical Society, 2008
- Implementation of the Random Forest method for the Imaging Atmospheric Cherenkov Telescope MAGICNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008
- VHE γ‐Ray Observation of the Crab Nebula and its Pulsar with the MAGIC TelescopeThe Astrophysical Journal, 2008
- Unfolding of differential energy spectra in the MAGIC experimentNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007
- Discovery of Very High Energy γ-Rays from 1ES 1011+496 atz= 0.212The Astrophysical Journal, 2007
- Fast Variability of Tera–Electron Volt γ Rays from the Radio Galaxy M87Science, 2006
- Discovery of Very High Energy γ-Rays from Markarian 180 Triggered by an Optical OutburstThe Astrophysical Journal, 2006
- A low level of extragalactic background light as revealed by γ-rays from blazarsNature, 2006
- Is the giant radio galaxy M 87 a TeV gamma-ray emitter?Astronomy & Astrophysics, 2003