Results 81 to 90 of about 16,751 (259)

Blazars in the re-ionization epoch [PDF]

open access: yes, 2021
Search and Study of Blazars in the early Universe PhD thesis by Silvia Belladitta , Matr. 733846 The aim of this thesis is to identify and characterize blazars at z>4, to provide more constraints on the properties of high-z radio-loud (RL ...
BELLADITTA SILVIA
core  

Study on the Gamma-Ray Radiation Properties of High-Redshift Blazars at z > 2.5

open access: yesUniverse
The high-redshift blazars are important cosmological probes for exploring the early universe and unraveling the fundamental emission processes and the structure of the active galactic nuclei.
Fan Wu, Li Zhang, Benzhong Dai
doaj   +1 more source

On the Nature of MeV Blazars

open access: yesThe Astrophysical Journal, 2002
Accepted for publication in the Astrophysical ...
Sikora, Marek   +3 more
openaire   +2 more sources

Using a wearable electrocardiogram (ECG) patch adapted for 7‐day monitoring in the horse

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background Arrhythmias can cause poor performance and sudden death in horses. Long‐term (>24 h) electrocardiogram (ECG) monitoring has been used to identify arrhythmias in humans and is superior to short‐term monitoring for transient arrhythmia detection. Televet is the current equine gold‐standard ECG device. The Cardea SOLO™ (CS) is a single‐
Tatiana Delecave Dias   +3 more
wiley   +1 more source

Physics from Time Variability of the VHE Blazar PKS 2155-304 [PDF]

open access: yes, 2010
Blazars are the principal extragalactic sources of very high energy gamma-ray emission in the Universe. These objects constitute a sub-class of Active Galactic Nuclei whose emission is dominated by Doppler boosted non-thermal radiation from plasma ...
BARRES-DE-ALMEIDA, ULISSES
core  

Particle acceleration in Blazars [PDF]

open access: yes, 2010
Understanding the variable emission of blazars observed with gamma-ray telescopes and Fermi has become a major challenge for theoretical models of particle acceleration. Here, we introduce a novel time-dependent emission model in which the maximum energy
Felix Spanier, Matthias Weidinger
core   +1 more source

Extreme Jet Beaming Observed in Neutrino-associated Blazars

open access: yesThe Astrophysical Journal
Bright blazars were found to be prominent neutrino sources, and a number of IceCube events were associated with them over recent years. A particularly strong observational connection is present between neutrinos and blazars with bright, Doppler-boosted ...
A. V. Plavin   +2 more
doaj   +1 more source

Comparative efficacy and studies of mode of action of minerals from diatoms against three species of filth flies

open access: yesMedical and Veterinary Entomology, EarlyView.
Mortality for diatomaceous earth was observed as early as 2 h after exposure with 50% and 90% mortality at 3.5 and 4.6 h (LT50 and LT90, respectively) for Musca domestica. The LT50 and LT90 increased when the size of the fly species increased (M. domestica to Cochliomyia macellaria to Sarcophaga bullata) and increased for all three from 50 to 70 ...
Grayson L. Cave   +4 more
wiley   +1 more source

Neutrino oscillations and blazars [PDF]

open access: yesAstroparticle Physics, 1999
14 pages, 3 postscript figures, using elsart.sty, invited talk to appear in the Proceedings of the VERITAS Workshop on TeV Astrophysics of Extragalactic Sources, eds. M. Catanese, J. Quinn, and T. Weekes (special issue of Astropart. Phys.) ** replaced by a significantly extended version **
openaire   +2 more sources

Slowly Rotating Traversable Wormholes Supported by Radially Varying String‐Fluid Matter: From Regular Geometries to Photon Trajectories

open access: yesAnnalen der Physik, Volume 538, Issue 6, June 2026.
This study examines slowly rotating traversable wormholes supported by string fluids whose properties change with radius. The matter smoothly shifts from a de Sitter‐like core to a string‐dominated exterior, producing a regular, horizon‐free spacetime.
A. Errehymy   +5 more
wiley   +1 more source

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