Results 91 to 100 of about 255,574 (289)
Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei
Astronomische Nachrichten, EarlyView.ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley +1 more source
Cosmic Ray Astrophysics using The High Altitude Water Cherenkov (HAWC) Observatory in México
EPJ Web of Conferences, 2017 The High-Altitude Water Cherenkov (HAWC) TeV gamma–ray Observatory in México is ready to search and study gamma-ray emission regions, extremely high-energy cosmic-ray sources, and to identify transient phenomena.
de la Fuente Eduardo +3 more
doaj +2 more sources
Multispacecraft Observations of the 27 Day Periodicity in Galactic Protons from 2018 to 2019
The Astrophysical JournalGalactic cosmic-ray (GCR) intensities exhibit recurrent variations caused by their passage through plasma interaction regions corotating with the Sun, with the ∼27 day periodicity being the most prominent one.
S. Amoroso +57 more
doaj +1 more source
The Era of Kilometer-Scale Neutrino Detectors
Advances in High Energy Physics, 2013 Neutrino astronomy beyond the Sun was first imagined in the late 1950s; by the 1970s, it was realized that kilometer-scale neutrino detectors were required.
Francis Halzen, Uli Katz
doaj +1 more source
High energy cosmic-ray interactions with particles from the Sun
, 2011 Cosmic-ray protons with energies above $10^{16}$ eV passing near the Sun may interact with photons emitted by the Sun and be excited to a $\Delta^+$ resonance.
G. Kulikov +5 more
core +1 more source
Simulation Studies of Delta-ray Backgrounds in a Compton-Scatter Transition Radiation Detector [PDF]
, 2006 In order to evaluate the response to cosmic-ray nuclei of a Compton-Scatter Transition Radiation Detector in the proposed ACCESS space-based mission, a hybrid Monte Carlo simulation using GEANT3 and an external transition radiation (TR) generator routine
Case +6 more
core +3 more sources
Biotechnology and Bioengineering, EarlyView.ABSTRACT Protein aggregation poses a significant risk to biopharmaceutical product quality, as even minor amounts of oligomeric species can compromise efficacy and safety. Rapid and reliable detection of protein aggregates thus remains a major challenge in biopharmaceutical manufacturing.
Jakob Heyer‐Müller +4 more
wiley +1 more source
Analytical Model for Estimating the Zenith Angle Dependence of Terrestrial Cosmic Ray Fluxes. [PDF]
PLoS ONE, 2016 A new model called "PHITS-based Analytical Radiation Model in the Atmosphere (PARMA) version 4.0" was developed to facilitate instantaneous estimation of not only omnidirectional but also angular differential energy spectra of cosmic ray fluxes anywhere ...
Tatsuhiko Sato
doaj +1 more source
Compton Scattered Transition Radiation from Very High Energy Particles
, 2002 X-ray transition radiation can be used to measure the Lorentz factor of relativistic particles. At energies approaching gamma = E/mc^2 = 10^5, transition radiation detectors (TRDs) can be optimized by using thick (sim 5 - 10 mil) foils with large (5-10 ...
Artru +9 more
core +1 more source
Physical Origin, Evolution and Observational Signature of Diffused Antiworld [PDF]
, 1998 The existence of macroscopic regions with antibaryon excess in the baryon asymmetric Universe with general baryon excess is the possible consequence of practically all models of baryosynthesis.
A.S. Sakharov +15 more
core +2 more sources