Results 91 to 100 of about 16,751 (259)
The connection between jets and host galaxies of radio loud AGN: Blazars vs NLSy1s [PDF]
, 2018 This doctoral dissertation discuss the main properties of the host galaxies of those active galactic nuclei (AGN) capable of generating strong relativistic jets (and therefore, capable of emitting up to the γ−ray energy ranges) and with their jets ...
Alejandro Olguín Iglesias
core
Investigation of Two Fermi-LAT Gamma-Ray Blazars Coincident with High-energy Neutrinos Detected by IceCube [PDF]
Astrophysical Journal, 2019 After the identification of the gamma-ray blazar TXS 0506+056 as the first compelling IceCube neutrino source candidate, we perform a systematic analysis of all high-energy neutrino events satisfying the IceCube realtime trigger criteria.
Fermi-LAT collaboration S. Garrappa +341 more
semanticscholar +1 more source
British Educational Research Journal, Volume 52, Issue 3, Page 1878-1897, June 2026.Abstract This paper explores the challenges and opportunities surrounding the recruitment and retention of minority ethnic teachers in England. Drawing on interview data from 33 teachers and school leaders of diverse ethnic backgrounds, it investigates whether racialised barriers identified in earlier research have shifted in the current context of ...
Antonina Tereshchenko +5 more
wiley +1 more source
CONSTRAINTS ON THE MINIMUM ELECTRON LORENTZ FACTOR AND MATTER CONTENT OF JETS FOR A SAMPLE OF BRIGHT FERMI BLAZARS [PDF]
, 2014 We fit (quasi-)simultaneous multi-waveband spectral energy distributions for a sample of low-synchrotron-peaked (LSP) blazars with a one-zone leptonic model.
Chen, Liang, Kang, Shi-Ju, Wu, Qingwen
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Classification of blazars based on data-driven approaches
Astronomy & AstrophysicsContext. Active galactic nuclei (AGNs), including blazars, exhibit distinctive variability in their optical light curves, making them ideal for classification studies. This work uses data from the latest GAIA and Pan-STARRS data releases to analyze these
Vaccaro Simone +7 more
doaj +1 more source
The Extremes in Intra-Night Blazar Variability: The S4 0954+65 Case
Galaxies, 2016 We present results of optical observations of the extremely violently variable blazar S4 0954+65 on intra-night time scales. The object showed flux changes of up to 100% within a few hours.
Rumen Bachev +6 more
doaj +1 more source
Identifying the 3FHL Catalog. VI. Results of the 2019 Gemini Optical Spectroscopy
The Astronomical Journal, 2023 Active galactic nuclei with their relativistic jets pointed toward the observer are a class of luminous gamma-ray sources commonly known as blazars. The study of this source class is essential to unveil the physical processes powering these extreme jets,
M. Rajagopal +4 more
doaj +1 more source
Multiwavelength properties of blazars [PDF]
Advances in Space Research, 1998 Blazar spectral energy distributions (SEDs) are double peaked and follow a self-similar sequence in luminosity. The so-called "blue" blazars, whose first SED component peaks at X-ray energies, are TeV sources, although with a relatively small fraction of their bolometric luminosities.
openaire +3 more sources
Molecular Ecology, Volume 35, Issue 9, May 2026.ABSTRACT Understanding how aerial fungal diversity varies across space, habitat, and disturbance is key to linking local‐scale sporocarp (fruiting body) reproduction with continental‐scale biogeography. In this study, we combined passive spore trap metabarcoding with macrofungal sporocarp records from 31 plots in eight sites across North America to ...
Andrew W. Ratz +18 more
wiley +1 more source
The relation between black hole masses and Lorentz factors of the jet components in blazars [PDF]
, 2009 We explore the relationship between black hole mass (M(BH)) and the motion of the jet components for a sample of blazars. The Very Long Baseline Array (VLBA) 2 cm Survey and its continuation: Monitoring of Jets in active galactic nuclei (AGNs) with VLBA ...
Cao, Xin-Wu, Zhou, Ming
core