MAGIC Observations of PG 1553+113 during a Multiwavelength Campaign in July 2006

Abstract

The active galactic nucleus PG 1553+113 was observed by the MAGIC telescope in July 2006 during a multiwavelength campaign, in which telescopes in the optical, X-ray, and very high energies participated. Although the MAGIC data were affected by strong atmospheric absorption (calima), they were analyzed after applying a correction. In 8.5 hours, a signal was detected with a significance of 5.0 sigma. The integral flux above 150 GeV was (2.6 +/- 0.9)*10^{-7} ph/s/m^2. By fitting the differential energy spectrum with a power law, a spectral index of -4.1 +/- 0.3 was obtained.

4 pages, 3 figures, accepted for publication in A&A

References in corpus (11)

• VHE Gamma-Ray Observation of the Crab Nebula and its Pulsar with the MAGIC telescope
• Imaging redshifts of BL Lac objects
• The HST Survey of BL Lacertae Objects. I. Surface Brightness Profiles, Magnitudes, and Radii of Host Galaxies
• ESO-VLT optical spectroscopy of BL Lac objects: II. New redshifts, featureless objects and classification assessments
• Detection of VHE radiation from the BL Lac PG 1553+113 with the MAGIC telescope
• Evidence for VHE Gamma-ray Emission from the Distant BL Lac PG 1553+113
• The Carlsberg Meridian Telescope CCD Drift Scan Survey
• Break in the VHE spectrum of PG 1553+113: new upper limit on its redshift?
• A Hard X-Ray View of Two Distant VHE Blazars: 1ES 1101-232 and 1ES 1553+113
• On the distance of PG 1553+11. A lineless BL Lac object active in the TeV band
• A method to correct IACT data for atmospheric absorption due to the Saharan Air Layer

Cited by in corpus (14)

• Fermi observations of TeV-selected AGN
• Long-term optical monitoring of TeV emitting Blazars
• Detection of Intra-day Variability Timescales of Four High Energy Peaked Blazars with XMM-Newton
• Simultaneous Multiwavelength Observations of Markarian 421 During Outburst
• PG 1553+113: five years of observations with MAGIC
• Fermi Observations of the Very Hard Gamma-ray Blazar PG 1553+113
• Multi-band Variability of the TeV Blazar PG 1553+113 with XMM-Newton
• Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March-April 2008
• Redshifts of distant blazar limited by Fermi and VHE $\gamma$-ray observations
• A method to correct IACT data for atmospheric absorption due to the Saharan Air Layer
• An exploration of hadronic interactions in blazars using IceCube
• Constraining Extragalactic Background Light From TeV Blazars
• Model-independent Redshift Estimation of BL Lac Objects through VHE Observations
• Infrared emission from dust and the spectral features of extragalactic gamma-ray sources