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MAGIC observations of PG 1553+113 during a multiwavelength campaign in July 2006

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Antoranz Canales, Pedro and Barrio Uña, Juan Abel and Contreras González, José Luis and Fonseca González, Mª Victoria and López Moya, Marcos and Miranda Pantoja, José Miguel and Nieto, Daniel (2009) MAGIC observations of PG 1553+113 during a multiwavelength campaign in July 2006. Astronomy & Astrophysics, 493 (2). pp. 467-469. ISSN 0004-6361

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Official URL: http://dx.doi.org/10.1051/0004-6361:20079048


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Abstract

The active galactic nucleus PG1553+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 h, a signal was detected with a significance of 5.0 sigma. The integral flux above 150 GeV was (2.6 +/- 0.9) x 10(-7) ph s(-1) m(-2). By fitting the differential energy spectrum with a power law, a spectral index of -4.1 +/- 0.3 was obtained.


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© ESO 2009. We would like to thank the IAC for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN and the Spanish CICYT is gratefully acknowledged. This work was also supported by ETH research grant TH-34/04-3 and by Polish grant MNiI 1P03D01028.

Uncontrolled Keywords:BL Lacertae Objects, Telescope, PG-1553+113, Spectroscopy, Redshifts.
Subjects:Sciences > Physics > Electronics
Sciences > Physics > Electricity
Sciences > Physics > Nuclear physics
ID Code:23055
Deposited On:10 Oct 2013 12:13
Last Modified:10 Dec 2018 14:58

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