L. Maraschi

TL;DR: In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy as mentioned in this paper, and the results and analysis of this campaign, as well as the multi-wavelength data as a legacy data repository were presented.

TL;DR: In this paper, the angular distribution of reconstructed gamma-ray arrival directions around the source is broader than for a point-like source, and upper limits on the extended emission around the bright blazars Mrk 421 and Mrk 501 using the MAGIC telescope data are presented.

TL;DR: In this article, the authors presented all the publicly available data from optical/UV wavelengths (UVOT) to X-rays (XRT, BAT), obtained from Swift observations of the blazar PKS 2155-304, performed in response to the rapid alert sent out after the strong TeV activity (up to 17 Crab flux level at E > 200 GeV) at the end of July 2006.

TL;DR: In this paper, the authors present multi-epoch optical observations of the blazar 3C 454.3 (z = 0.859) from 2008 August through 2011 December, using the Small and Medium Aperture Research Telescope System Consortium 1.5 m + RCSpectrograph and 1.3 m + ANDICAM in Cerro Tololo, Chile.

TL;DR: In this article, the results of five years (2005-2009) of MAGIC observations of the BL Lac object PG 1553+113 at very high energies (VHEs, E > 100 GeV).