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 gamma-ray emission was detected with a significance of 5.5 sigma. An integral flux above 200 GeV of (2.3 +/- 0.7) x 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 has been determined. No significant flux -3.3 x 0.7 variation was found.

J., A., E., A., H., A., P., A., A., A., M., A., et al. (2006). Discovery of Very High Energy γ-Rays from Markarian 180 Triggered by an Optical Outburst. THE ASTROPHYSICAL JOURNAL, 648(2), L105-L108 [10.1086/508020].

Discovery of Very High Energy γ-Rays from Markarian 180 Triggered by an Optical Outburst

STAMERRA, ANTONIO;TURINI, NICOLA;
2006-01-01

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 gamma-ray emission was detected with a significance of 5.5 sigma. An integral flux above 200 GeV of (2.3 +/- 0.7) x 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 has been determined. No significant flux -3.3 x 0.7 variation was found.
J., A., E., A., H., A., P., A., A., A., M., A., et al. (2006). Discovery of Very High Energy γ-Rays from Markarian 180 Triggered by an Optical Outburst. THE ASTROPHYSICAL JOURNAL, 648(2), L105-L108 [10.1086/508020].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/42081
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