Speaker
Description
Because of their brightness and proximity (z=0.03), Mrk421 and Mrk501 are among the very-high-energy (>100 GeV) gamma-ray objects that can be studied with the greatest level of detail, and consequently they are excellent astrophysical high-energy physics laboratories to study the nature of blazars. Motivated by the extensive temporal exposure of Fermi-LAT, since 2008, there has been an unprecedentedly long and dense monitoring of the radio to very-high-energy gamma-ray emission from these two archetypical TeV blazars. In this conference, I will report some highlight results obtained from these multiwavelength campaigns. Despite some differences in the variability patterns of these two sources, there are also a number of similarities that support a broadband emission dominated by leptonic scenarios, as well as indications for in situ electron acceleration in multiple compact regions. I will also show the presence of different flavors of flaring activity and discuss the complexity in the temporal evolution of their broadband emission, which demonstrates the importance of performing a continuous monitoring over multi-year timescales to fully characterise the dynamics of blazars.
