Active galactic nuclei: what's in a name?

P Padovani, DM Alexander, RJ Assef… - The Astronomy and …, 2017 - Springer
Active galactic nuclei (AGN) are energetic astrophysical sources powered by accretion onto
supermassive black holes in galaxies, and present unique observational signatures that …

The extragalactic background light and the gamma-ray opacity of the universe

E Dwek, F Krennrich - Astroparticle Physics, 2013 - Elsevier
The extragalactic background light (EBL) is one of the fundamental observational quantities
in cosmology. All energy releases from resolved and unresolved extragalactic sources, and …

The fourth catalog of active galactic nuclei detected by the Fermi Large Area Telescope

M Ajello, R Angioni, M Axelsson, J Ballet… - The Astrophysical …, 2020 - iopscience.iop.org
Thanks to its broad energy range, excellent sensitivity, and all-sky monitoring capabilities,
the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) has revolutionized our …

Leptonic and hadronic modeling of Fermi-detected blazars

M Böttcher, A Reimer, K Sweeney… - The Astrophysical …, 2013 - iopscience.iop.org
We describe new implementations of leptonic and hadronic models for the broadband
emission from relativistic jets in active galactic nuclei in a temporary steady state. For the …

3FHL: The third catalog of hard Fermi-LAT sources

M Ajello, WB Atwood, L Baldini, J Ballet… - The Astrophysical …, 2017 - iopscience.iop.org
We present a catalog of sources detected above 10 GeV by the Fermi Large Area Telescope
(LAT) in the first 7 years of data using the Pass 8 event-level analysis. This is the Third …

The Fermi large area telescope on orbit: event classification, instrument response functions, and calibration

M Ackermann, M Ajello, A Albert… - The Astrophysical …, 2012 - iopscience.iop.org
ABSTRACT The Fermi Large Area Telescope (Fermi-LAT, hereafter LAT), the primary
instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide …

Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope

M Ackermann, A Albert, B Anderson, L Baldini, J Ballet… - Physical Review D, 2014 - APS
The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-
dominated objects known. Due to their proximity, high dark matter content, and lack of …

The fourth catalog of active galactic nuclei detected by the Fermi Large Area Telescope: data release 3

M Ajello, L Baldini, J Ballet, D Bastieri… - The Astrophysical …, 2022 - iopscience.iop.org
Since its launch in 2008, the Fermi Large Area Telescope (LAT; Atwood et al. 2009) has
enabled the discovery of new classes of gamma-ray emitters and the detection of much …

The second catalog of active galactic nuclei detected by the Fermi Large Area Telescope

M Ackermann, M Ajello, A Allafort… - The Astrophysical …, 2011 - iopscience.iop.org
The second catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area
Telescope (LAT) in two years of scientific operation is presented. The second LAT AGN …

the contribution of FERMI-2LAC blazars to diffuse TeV–PeV neutrino flux

MG Aartsen, K Abraham, M Ackermann… - The Astrophysical …, 2017 - iopscience.iop.org
The initial discovery of astrophysical neutrino flux around PeV energies (Aartsen et al.
2013a) a few years ago marked the beginning of high-energy neutrino astronomy. Since …