Results 51 to 60 of about 130,057 (295)

The Search for Very High Energy γ-rays from Misaligned AGN [PDF]

open access: yes, 2013
The aim of this work is to study the potential for emission at very high energies (100 GeV) by misaligned active galactic nuclei (AGN) and the future prospects for observations of these objects with the next generation imaging atmospheric Cherenkov ...
CHEESEBROUGH, ALISTAIR
core  

Study of the Very High Energy emission of M87 through its broadband spectral energy distribution. [PDF]

open access: yes, 2020
M87 is a giant radio galaxy, which is the central dominant galaxy of the Virgo Cluster. It is located at a distance of 6.5 Mpc (z = 0.004), and holds a supermassive black hole with a mass estimated in 5.6x10⁹ M๏.
Fernando Josué Ureña Mena
core  

Two-zone model for the broadband Crab nebula spectrum: microscopic interpretation

open access: yesEPJ Web of Conferences, 2017
We develop a simple two-zone interpretation of the broadband baseline Crab nebula spectrum between 10−5 eV and ~ 100 TeV by using two distinct log-parabola energetic electrons distributions.
Fraschetti F., Pohl M.
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Very High Energy Gamma-Rays from Binary Systems [PDF]

open access: yes, 2010
This thesis presents a study of the very high energy (VHE) gamma-ray emission from X-ray binary systems using the H.E.S.S. imaging atmospheric Cherenkov array.
DICKINSON, HUGH,JOHN   +1 more
core  

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Shaping the future of radiotherapy: the role of electron beams and flash techniques

open access: yesRUDN Journal of Medicine
Relevance. Radiation therapy (RT) remains a cornerstone of oncology, offering targeted treatment for various cancers. With its roots tracing back to the discovery of X-rays by Wilhelm Röntgen and radium research by Marie Curie, RT has evolved into a ...
Mikhail A. Parshenkov   +8 more
doaj   +1 more source

Detailed investigation of the low energy secondary electron yield of technical Cu and its relevance for the LHC

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2015
The detailed study of the low energy secondary electron yield (LE-SEY) of technical Cu for low electron energies (from 0 to 20 eV) is very important for electron cloud build up in high intensity accelerators and in many other fields of research ...
R. Cimino   +5 more
doaj   +1 more source

Time-focusing time-of-flight, a new method to turn a MAC-E-filter into a quasi-differential spectrometer

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
Spectrometers based on the magnetic adiabatic collimation followed by an electrostatic filter (MAC-E-filter) principle combine high angular acceptance with an excellent energy resolution.
A. Fulst   +4 more
doaj   +1 more source

Mapping travelling convection vortex events with respect to energetic particle boundaries [PDF]

open access: yesAnnales Geophysicae, 1998
Thirteen events of high-latitude ionospheric travelling convection vortices during very quiet conditions were identified in the Greenland magnetometer data during 1990 and 1991.
T. Moretto, A. Yahnin
doaj   +1 more source

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