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Title: Discovery of very high energy gamma-rays from Markarian 180 triggered by an optical outburst
Author: MAGIC Collaboration
Paredes i Poy, Josep Maria
Ribó Gomis, Marc
Bosch i Ramon, Valentí
Keywords: Raigs gamma
Observacions astronòmiques
Gamma rays
Astronomical observations
Issue Date: 2006
Publisher: Institute of Physics (IOP)
Abstract: The high-frequency-peaked BL Lacertae object Markarian 180 (Mrk 180) was observed to have an optical outburst in 2006 March, triggering a Target of Opportunity observation with the MAGIC telescope. The source was observed for 12.4 hr, and very high energy γ-ray emission was detected with a significance of 5.5 σ. An integral flux above 200 GeV of (2.3 ± 0.7) × 10-11 cm-2 s-1 was measured, corresponding to 11% of the Crab Nebula flux. A rather soft spectrum with a photon index of -3.3 ± 0.7 has been determined. No significant flux variation was found.
Note: Reproducció del document publicat a:
It is part of: Astrophysical Journal, 2006, vol. 648, p. 105-108
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ISSN: 0004-637X
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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