Accès ouvert
2026
article
OpenAlex
G. Principe, J.C. Algaba, E. Aviano, W.Y. Cheong et autres
Context. The archetypal blazar 3C 279 has a prominent relativistic jet and strong broadband variability across the electromagnetic spectrum. In April 2017, the Event Horizon Telescope (EHT) observed 3C 279 with an unprecedented angular resolution of about 20 μas, accompanied by one …
Accès ouvert
2026
article
OpenAlex
K. Abe, S. Abe, J. Abhir, A. Abhishek et autres
Context. Flat spectrum radio quasars (FSRQs) often remain undetected at very-high-energy (VHE, E > 100 GeV) γ rays due to their typically soft spectra and large distance. In December 2023, the Large-Sized Telescope prototype (LST-1) detected for the first time VHE γ-ray …
2026
article
OpenAlex
S. Abe, J. Abhir, V. A. Acciari, A. Aguasca-Cabot et autres
The Large High Altitude Air Shower Observatory (LHAASO) Collaboration has recently reported the first detection at TeV energies of a low-luminosity radio galaxy, NGC 4278. The aim of this work is to investigate the high-energy properties of NGC 4278 during the flaring …
2026
article
OpenAlex
K. Abe, S. Abe, J. Abhir, A. Abhishek et autres
Context. Mrk 421 displayed its highest flux state ever observed in February 2010 with very high tera-electronvolt fluxes and interesting cross-band correlations and a spectral energy distribution (SED) evolution not entirely consistent with the standard single zone leptonic synchrotron self-Compton model. The …
Accès ouvert
2025
article
OpenAlex
S. Abe, J. Abhir, A. Abhishek, V. A. Acciari et autres
Gamma-ray bursts (GRBs) are the most powerful transient objects in the Universe, and they are a primary target for the MAGIC Collaboration. Recognizing the challenges of observing these elusive objects with Imaging Atmospheric Cherenkov Telescopes (IACTs), we implemented a dedicated observational strategy …