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Observation of gamma rays from the galactic center with the MAGIC telescope

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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 (2006) Observation of gamma rays from the galactic center with the MAGIC telescope. Astrophysical journal, 638 (2 (Par). L101-L104. ISSN 0004-637X

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Official URL: http://dx.doi.org/10.1086/501164




Abstract

Recently, the Galactic center has been reported to be a source of very high energy (VHE) gamma-rays by the CANGAROO, VERITAS, and HESS experiments. The energy spectra as measured by these experiments show substantial differences. In this Letter we present MAGIC observations of the Galactic center, resulting in the detection of a differential gamma-ray flux consistent with a steady, hard-slope power law, described as dN gamma/(dA dt dE) = (2.9 +/- 0.6) x 10(-12) (E/TeV)-2.2 +/- 0.2 cm(-2) s(-1) TeV-1. The gamma-ray source is centered at (R.A., decl.) p (17(h)45(m)20(s), -29 degrees 2'). This result confirms the previous measurements by the HESS experiment and indicates a steady source of TeV gamma-rays. We briefly describe the observational technique used and the procedure implemented for the data analysis, and we discuss the results in the perspective of different models proposed for the acceleration of the VHE gamma-rays.


Item Type:Article
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© The American Astronomical Society. We would like to thank the IAC for the excellent working conditions at the Observatory de los Muchachos in La Palma. This work was supported by the German BMBF and MPG, the Italian INFN, ETH research grant TH-34/04-3, and the Polish MNiI grant 1P03D01028.

Uncontrolled Keywords:Black-Hole, Sagittarius-A, Center Region, TEV Emissiom, Dark-Matter, Direction, Egret, Neutrons, East.
Subjects:Sciences > Physics > Electronics
Sciences > Physics > Astrophysics
Sciences > Physics > Electricity
Sciences > Physics > Nuclear physics
ID Code:24349
Deposited On:24 Jan 2014 11:05
Last Modified:10 Dec 2018 14:58

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