Results 111 to 120 of about 243,906 (313)

Applications for New Scintillator Technologies in Gamma Ray Astronomy

open access: yes, 2016
Scintillators have long been used for probing the high energy universe. The reliability and low cost of scintillator-PMT detectors have made them the de facto standard for experiments on high altitude balloons and in orbiting satellites.
M. McConnell   +3 more
semanticscholar   +1 more source

Recent Advances in Upconversion Nanoparticles for Therapeutics: From Fundamentals to Cutting‐Edge Applications

open access: yesElectron, EarlyView.
Rare‐earth‐doped upconversion nanoparticles have emerged as anti‐Stokes nanoprobes for advanced phototherapy in biological systems. This review highlights recent advances in their use for therapeutic applications, spanning from fundamental principles to cutting‐edge technologies, and provides insights into their future development for precision ...
Jinghan Zhang   +6 more
wiley   +1 more source

Constraints on stellar yields and SNe from gamma-ray line observations

open access: yes, 1999
Gamma-ray line observations provide a versatile tool for studies of nucleosynthesis processes and supernova physics. In particular, the observation of radioactive species in the interstellar medium probes recent nucleosynthesis activity on various time ...
Knodlseder, Jurgen
core   +2 more sources

Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems

open access: yesLaser &Photonics Reviews, EarlyView.
This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley   +1 more source

The ARGO-YBJ legacy to next generation wide field-of-view experiments

open access: yesEPJ Web of Conferences, 2017
The ARGO-YBJ experiment has been in stable data taking for more than 5 years at the YangBaJing Cosmic Ray Observatory (Tibet, P.R. China, 4300 m a.s.l., 606 g/cm2).
Di Sciascio Giuseppe
doaj   +2 more sources

NASA needs and trends in cryogenic cooling [PDF]

open access: yes, 1983
Projected NASA needs in spaceborne cryogenic systems and recent results of NASA cryogenic cooling technology efforts in infrared astronomy, X-ray astronomy, gamma ray astronomy, liquid helium and space stations are ...
Sherman, A.
core   +1 more source

Vortex Beam Lasing from III‐V Nanowires Epitaxially Grown on Silicon‐on‐Insulator

open access: yesLaser &Photonics Reviews, EarlyView.
An epitaxially grown InGaAs nanowire photonic crystal laser on silicon‐on‐insulator is demonstrated to emit vortex beams carrying orbital angular momentum. Deforming the honeycomb lattice causes the band inversion effect and creates symmetry‐protected bound states in the continuum, enabling single‐mode lasing with a topological charge of −2 ...
Bogdan‐Petrin Ratiu   +7 more
wiley   +1 more source

The 157 Month Swift/BAT All-sky Hard X-Ray Survey

open access: yesThe Astrophysical Journal
The Burst Alert Telescope (BAT) on board the Neil Gehrels Swift Observatory has been serving as a survey instrument for the hard X-ray sky, and has detected thousands of X-ray sources (e.g., active galactic nuclei, X-ray binaries, etc).
Amy Y. Lien   +14 more
doaj   +1 more source

X- and Gamma-ray Studies of Cas A: Exposing Core Collapse to the Core

open access: yes, 2003
In this review of X-ray and gamma-ray observations of Cas A, evidence is discussed that Cas A was a Type Ib supernova of a Wolf-Rayet star with a main sequence mass between 22-25 Msun, that exploded after stellar wind loss had reduced its mass to ~6 Msun.
Arnett   +46 more
core   +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

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