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-LAT realtime follow-ups of high-energy neutrino alerts
S. Garrappa, S. Buson, A. Franckowiak +3
The detection of the flaring gamma-ray blazar TXS 0506+056 in spatial and temporal coincidence with the high-energy neutrino IC-170922A represents a milestone for multi-messenger a…
The Unanticipated Phenomenology of the Blazar PKS~2131021: A Unique Super-Massive Black Hole Binary Candidate
S. O'Neill, S. Kiehlmann, A. C. S. Readhead +24
Most large galaxies host supermassive black holes in their nuclei and are subject to mergers, which can produce a supermassive black hole binary (SMBHB), and hence periodic signatu…
Constraints on magnetic field and particle content in blazar jets through optical circular polarization
I. Liodakis, D. Blinov, S. B. Potter +1
Polarization offers a unique view in the physical processes of astrophysical jets. We report on optical circular polarization observations of two famous blazars, namely 3C 279 and…
Identifying changing jets through their radio variability
I. Liodakis, T. Hovatta, M. F. Aller +4
Supermassive black holes launch highly relativistic jets with velocities reaching Lorentz factors as high as . How the jets accelerate to such high velocities and where along…
Origin and role of relativistic cosmic particles
A. Araudo, G. Morlino, B. Olmi +121
This white paper briefly summarizes the importance of the study of relativistic cosmic rays, both as a constituent of our Universe, and through their impact on stellar and galactic…
Probing Dark Matter and Fundamental Physics with the Cherenkov Telescope Array
F. Iocco, M. Meyer, M. Doro +71
Astrophysical observations provide strong evidence that more than 80% of all matter in the Universe is in the form of dark matter (DM). Two leading candidates of particles beyond t…
Probing extreme environments with the Cherenkov Telescope Array
C. Boisson, A. M. Brown, A. Burtovoi +127
The physics of the non-thermal Universe provides information on the acceleration mechanisms in extreme environments, such as black holes and relativistic jets, neutron stars, super…
Multi-messenger and transient astrophysics with the Cherenkov Telescope Array
Ž. Bošnjak, A. M. Brown, A. Carosi +142
The discovery of gravitational waves, high-energy neutrinos or the very-high-energy counterpart of gamma-ray bursts has revolutionized the high-energy and transient astrophysics co…
Fermi Large Area Telescope Performance After 10 Years Of Operation
The Fermi LAT Collaboration, M. Ajello, W. B. Atwood +126
The Large Area Telescope (LAT), the primary instrument for the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy gamma-ray telescope,…
Catalog of Long-Term Transient Sources in the First 10 Years of Fermi-LAT Data
L. Baldini, J. Ballet, D. Bastieri +112
We present the first Fermi Large Area Telescope (LAT) catalog of long-term -ray transient sources (1FLT). This comprises sources that were detected on monthly time intervals dur…
The Time-Dependent Distribution of Optical Polarization Angle Changes in Blazars
S. Kiehlmann, D. Blinov, I. Liodakis +17
At optical wavelengths, blazar Electric Vector Position Angle (EVPA) rotations linked with gamma-ray activity have been the subject of intense interest and systematic investigation…