First bounds on the very high energy gamma-ray emission from Arp 220
Journal
Astrophys.J 658, 245-248, 2007 (Submitted 2006/11/26)
External url: arXiv abstract
Abstract:
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.