First bounds on the very high energy gamma-ray emission from Arp 220

Details First bounds on the very high energy gamma-ray emission from Arp 220 First bounds on the very high energy gamma-ray emission from Arp 220

2006-11-26

arxiv.org/abs/astro-ph/0611786v1

Astrophys.J.658:245-248,2007

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJ

Scientific paper

10.1086/511173

Using the Major Atmospheric Gamma Imaging Cherenkov Telescope (MAGIC), we
have observed the nearest ultra-luminous infrared galaxy Arp 220 for about 15
hours. No significant signal was detected within the dedicated amount of
observation time. The first upper limits to the very high energy $\gamma$-ray
flux of Arp 220 are herein reported and compared with theoretical expectations.

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