Pinpointing the TeV gamma-ray emission region in M87 using TeV and 43 GHz radio monitoring

Understand

The TeV radio galaxy M87 is the first radio galaxy detected in the TeV regime.

• The structure of its jet, which is not pointing towards our line of sight, is spatially resolved in X-ray (by Chandra), optical and radio observations.
• In 2008, the three main Atmospheric Cherenkov Telescope observatories VERITAS, MAGIC and H.E.S.S.
• coordinated their observations in a joint campaign from January to May with a total observation time of approx.