Results 101 to 110 of about 207,538 (259)

The origin of cosmic rays and TeV gamma-ray astronomy

open access: yesEPJ Web of Conferences, 2013
Cosmic rays are accelerated to high energies in Galactic and extragalactic objects like Supernova remnants (SNR) and active galactic nuclei (AGN). How these accelerators work and how efficient they accelerate different types of particles to energies of ...
Maier Gernot
doaj   +1 more source

Scientific Visualization in Astronomy: Towards the Petascale Astronomy Era [PDF]

open access: yes, 2011
Astronomy is entering a new era of discovery, coincident with the establishment of new facilities for observation and simulation that will routinely generate petabytes of data. While an increasing reliance on automated data analysis is anticipated, a critical role will remain for visualization-based knowledge discovery.
arxiv   +1 more source

Two Types of q$$ q $$‐Gaussian Distributions Used to Study the Diffusion in a Finite Region

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this work, we explore both the ordinary q$$ q $$‐Gaussian distribution and a new one defined here, determining both their mean and variance, and we use them to construct solutions of the q$$ q $$‐deformed diffusion differential equation. This approach allows us to realize that the standard deviation of the distribution must be a function of
Won Sang Chung   +3 more
wiley   +1 more source

ESA INTEGRAL and Cataclysmic Variables

open access: yesOdessa Astronomical Publications, 2017
The satellite INTEGRAL is ESA project operating since January 2003. It is dedicated to high energy astronomy. INTEGRAL is able to detect and perform astrometry, photometry and spectroscopy of sources from X-ray to gamma-ray regime (nominal range of ...
Jan Strobl   +4 more
doaj   +1 more source

Fourth Time's a XARM [PDF]

open access: yesarXiv, 2018
Arguably, no mission changed X-ray astronomy in as short a time as did Hitomi. The planned X-ray Astronomy Recovery Mission, XARM, will carry its legacy forward.
arxiv  

Characterization of a practically designed plastic scintillation plate dosimeter

open access: yesMedical Physics, EarlyView.
Abstract Background Advancements in radiotherapy have enabled the use of high‐definition irradiation, leading to more precise and finely adjusted treatments in clinical settings. Nevertheless, the attainment of high resolution, an extensive measurement area, and the repeatability of dose distribution measurements persist as challenges in clinical ...
Takeshi Ohta   +5 more
wiley   +1 more source

The First LHAASO Catalog of Gamma-Ray Sources

open access: yesThe Astrophysical Journal Supplement Series
We present the first catalog of very-high-energy and ultra-high-energy gamma-ray sources detected by the Large High Altitude Air Shower Observatory. The catalog was compiled using 508 days of data collected by the Water Cherenkov Detector Array from 2021
Zhen Cao   +280 more
doaj   +1 more source

Ground- and Space-Based Gamma-Ray Astronomy

open access: yes, 2015
In recent years, observational γ-ray astronomy has witnessed a remarkable range of exciting new results in the high-energy and very high-energy regimes.
S. Funk
semanticscholar   +1 more source

TeV gamma-ray astronomy: A summary [PDF]

open access: yesAstroparticle Physics, 2012
19 pages. Astroparticle Physics, in press. See published article for higher resolution figures. Cite as: J. Holder, TeV gamma-ray astronomy: A summary, Astropart. Phys.
openaire   +3 more sources

Scenario‐free robust optimization algorithm for IMRT and IMPT treatment planning

open access: yesMedical Physics, EarlyView.
Abstract Background Robust treatment planning algorithms for intensity modulated proton therapy (IMPT) and intensity modulated radiation therapy (IMRT) allow for uncertainty reduction in the delivered dose distributions through explicit inclusion of error scenarios.
Remo Cristoforetti   +2 more
wiley   +1 more source

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