演講資訊

摘要：

Active Galactic Nuclei (AGN) jets are considered to be driven by the central supermassive black holes (SMBH). Probing the precise location and the structure of the relativistic jets is a fundamental issue for understanding jet launching mechanisms from the vicinity of the SMBH and its collimation mechanisms as propagating downstream. The Event Horizon Telescope (EHT), an earth-size millimeter Very Long Baseline Interferometry (VLBI) network of radio telescopes has successfully produced the first image of a black hole shadow, at the heart of the representative nearby radio galaxy M87. I will briefly review our EHT results first, and introduce our blazar studies with the EHT. Blazars, possessing relativistically beamed AGN jets pointing toward observers, are the vast majority of gamma-ray emitting sources. However, still the location and the size of gamma-ray emitting region are under discussions with indirect estimations. The EHT observations toward the nearby representative TeV blazar Mrk 501 will give us a direct hint with the resolution comparable to the size of the gamma-ray emitting region. By combining with the other cm and mm VLBI observations of Mrk 501 and comparing with the case for M87, I will present our prospects with the EHT observations including the ALMA and the Greenland Telescope.