scholarly journals A Spatial Study of X-ray Properties in Superbubble 30 Dor C with XMM-Newton

2015 ◽  
Vol 11 (A29B) ◽  
pp. 737-737
Author(s):  
Y. Babazaki ◽  
I. Mitsuishi ◽  
H. Sano ◽  
S. Yoshiike ◽  
T. Fukuda ◽  
...  
Keyword(s):  
Spatial Variation ◽  
Spatial Resolution ◽  
Thermal Model ◽  
Spectral Properties ◽  
High Spatial Resolution ◽  
Cosmic Ray ◽  
The West ◽  
X Ray ◽  
Photon Index ◽  
Circumstellar Environment

AbstractThe superbubble (SB) 30 Dor C with the strong non-thermal X-ray emission is one of the best targets for study of the cosmic-ray (CR) acceleration. We investigated X-ray spectral properties of the SB with a high spatial resolution of ~10 pc. Consequently, the spectra in the east regions can be described with a combination of absorbed thermal and non-thermal models while the spectra in the west regions can be fitted with an absorbed non-thermal model. We found that the observed photon index and intensity in 2-10 keV show variations of 2.0-3.5 and (0.6-8.0) × 10−7 erg s−1 cm−2 str−1, respectively. The results are possibly caused by the spatial variation of the CR acceleration efficiency and/or the circumstellar environment.

scholarly journals A High Spatial Resolution X‐Ray and Hα Study of Hot Gas in the Halos of Star‐forming Disk Galaxies. I. Spatial and Spectral Properties of the Diffuse X‐Ray Emission

2004 ◽  
Vol 151 (2) ◽  
pp. 193-236 ◽  
Author(s):  
David K. Strickland ◽  
Timothy M. Heckman ◽  
Edward J. M. Colbert ◽  
Charles G. Hoopes ◽  
Kimberly A. Weaver
Keyword(s):  
Spatial Resolution ◽  
Spectral Properties ◽  
High Spatial Resolution ◽  
Disk Galaxies ◽  
X Ray ◽  
Star Forming ◽  
Hot Gas

scholarly journals High-Spatial-Resolution Bone Densitometry with Dual-Energy X-ray Absorptiometric Region-free Analysis

Radiology ◽  
2015 ◽  
Vol 275 (1) ◽  
pp. 310-310 ◽  
Author(s):  
Richard M. Morris ◽  
Lang Yang ◽  
Miguel A. Martín-Fernández ◽  
Jose M. Pozo ◽  
Alejandro F. Frangi ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Bone Densitometry ◽  
High Spatial Resolution ◽  
Dual Energy ◽  
X Ray

scholarly journals ZnWO4 Nanoparticle Scintillators for High Resolution X-ray Imaging

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1721
Author(s):  
Heon Yong Jeong ◽  
Hyung San Lim ◽  
Ju Hyuk Lee ◽  
Jun Heo ◽  
Hyun Nam Kim ◽  
...  
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
High Resolution ◽  
Tungsten Oxide ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray ◽  
X Ray Imaging ◽  
Average Size ◽  
And Tungsten

The effect of scintillator particle size on high-resolution X-ray imaging was studied using zinc tungstate (ZnWO4) particles. The ZnWO4 particles were fabricated through a solid-state reaction between zinc oxide and tungsten oxide at various temperatures, producing particles with average sizes of 176.4 nm, 626.7 nm, and 2.127 μm; the zinc oxide and tungsten oxide were created using anodization. The spatial resolutions of high-resolution X-ray images, obtained from utilizing the fabricated particles, were determined: particles with the average size of 176.4 nm produced the highest spatial resolution. The results demonstrate that high spatial resolution can be obtained from ZnWO4 nanoparticle scintillators that minimize optical diffusion by having a particle size that is smaller than the emission wavelength.

APD-based x-ray imaging telescope using Fresnel zone plates for extremely high spatial resolution

2005 ◽  
Author(s):  
Michael R. Squillante ◽  
Richard A. Myers ◽  
Mitchell Woodring ◽  
James F. Christian ◽  
Frank Robertson ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Fresnel Zone ◽  
Fresnel Zone Plates ◽  
X Ray ◽  
Zone Plates ◽  
X Ray Imaging ◽  
Imaging Telescope

High spatial resolution x-ray scintillator with pixel the silicon separator

2021 ◽  
Author(s):  
Toru Aoki ◽  
Kento Tabata ◽  
Ryota Okate ◽  
Shailendra Singh ◽  
Hiroki Kase ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray

High spatial-resolution X-ray inspection by pixelated scintillator

2018 ◽  
Author(s):  
Sho Miyao ◽  
Takahiro Tanino ◽  
Nobuyasu Fujioka ◽  
Izumi Hikita ◽  
Tomohiro Morinaga ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray

High spatial resolution full-field microscopy using a desktop-size soft x-ray laser

2007 ◽  
Author(s):  
Courtney A. Brewer ◽  
Fernando Brizuela ◽  
Dale Martz ◽  
Georgiy Vaschenko ◽  
Mario C. Marconi ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Full Field ◽  
X Ray

scholarly journals Magnetar X-ray emission mechanisms

2012 ◽  
Vol 8 (S291) ◽  
pp. 160-160
Author(s):  
Silvia Zane
Keyword(s):  
Spectral Analysis ◽  
Physical Interpretation ◽  
Spectral Properties ◽  
Gamma Ray ◽  
X Ray ◽  
Spectral Components ◽  
Self Consistent ◽  
Photon Index ◽  
Index 2 ◽  
Surface Fields

AbstractSoft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are peculiar X-ray sources which are believed to be magnetars: ultra-magnetized neutron stars which emission is dominated by surface fields (often in excess of 1E14 G, i.e. well above the QED threshold).Spectral analysis is an important tool in magnetar astrophysics since it can provide key information on the emission mechanisms. The first attempts at modelling the persistent (i.e. outside bursts) soft X-ray (¡10 keV) spectra of AXPs proved that a model consisting of a blackbody (kT 0.3-0.6 keV) plus a power-law (photon index 2-4) could successfully reproduce the observed emission. Moreover, INTEGRAL observations have shown that, while in quiescence, magnetars emit substantial persistent radiation also at higher energies, up to a few hundreds of keV. However, a convincing physical interpretation of the various spectral components is still missing.In this talk I will focus on the interpretation of magnetar spectral properties during quiescence. I will summarise the present status of the art and the currents attempts to model the broadband persistent emission of magnetars (from IR to hard Xrays) within a self consistent, physical scenario.

Evaluation of Soft X-ray Laser withIn situImaging Device of High Spatial Resolution ZnO Scintillator

2011 ◽  
Vol 50 ◽  
pp. 122202 ◽  
Author(s):  
Tomoharu Nakazato ◽  
Toshihiko Shimizu ◽  
Kohei Yamanoi ◽  
Kohei Sakai ◽  
Kohei Takeda ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray
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