搜索结果: 1-15 共查到“知识库 Hard X-ray”相关记录15条 . 查询时间(0.078 秒)
Towards hard X-ray imaging at GHz frame rate
hard X-ray imaging GHz frame rate Instrumentation and Detectors Plasma Physics
2012/5/17
Gigahertz (GHz) imaging using hard X-rays ($\gtrsim$ 10 keV) can be useful to high-temperature plasma experiments, as well as research using coherent photons from synchrotron radiation and X-ray free ...
Quantitative phase retrieval with a sub-100-nm resolution is achieved from micrographs of a zone plate based transmission x-ray microscope. A plastic zone plate containing objects of sizes from microm...
Improvements in calibration of GSO scintillators in the Suzaku Hard X-ray Detector
instrumentation: detectors — X-rays: general — X-rays: individual
2011/10/19
Improvements of in-orbit calibration of GSO scintillators in the Hard X-ray Detector on board Suzaku are reported. To resolve an apparent change of the energy scale of GSO which appeared across the la...
Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications
Steady Hard Gamma-Ray Emission Implications
2011/9/29
We report Fermi/LAT observations and broad-band spectral modeling of the radio-loud active galaxy 4C +55.17 (z=0.896), formally classified as a flat-spectrum radio quasar. Using 19 months of all-sky s...
Host Galaxy Properties of the Swift BAT Ultra Hard X-ray Selected AGN
Galaxy Properties Swift Hard X-ray Selected AGN
2011/9/29
We have assembled the largest sample of ultra hard X-ray selected (14-195 keV) AGN with host galaxy optical data to date, with 185 nearby (z<0.05), moderate luminosity AGN from the Swift BAT sample. T...
Comparison of hard x-ray production from various targets in air using a short pulse kHz laser with photon production from a high power multifilament laser beam from the same targets in air
multifilament short pulse kHz laser
2011/9/5
Over the last few years there has been much interest in the production of hard X-rays from various targets using a kHz short pulse laser at intensities above 1014Wcm-2 (A). Most of these studies have ...
Context: Hard X-rays from solar flares are an important diagnostic of particle acceleration and transport in the solar atmosphere. Any observed X-ray flux from on-disc sources is composed of direct em...
INTEGRAL observations of the GeV blazar PKS1502+106 and of the hard X-ray bright Seyfert Galaxy Mkn841
galaxies active – quasars individual PKS 1502+106 – Galaxies Seyfert – galaxies individual Mkn 841 – radiation
2010/11/16
Context. Extragalactic nuclear activity is best explored with observations at high energies, where the most extreme flux and spectral variations are expected to occur, witnessing changes in the accret...
Diffuse Hard X-ray Emission in Starburst Galaxies as Synchrotron from Very High Energy Electrons
High Energy Astrophysical Phenomena (astro-ph.HE) Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
The origin of the diffuse hard X-ray emission of starburst galaxies is a long-standing problem. We suggest that synchrotron emission of 10 - 100 TeV electrons and positrons can contribute significantl...
Development of the Hard-X-ray Angle Resolved X-ray Photoemission Spectrometer for Laboratory Use
X-ray Photoemission Spectrometer Laboratory Use
2010/9/17
This article reports development of a practical laboratory hard X-ray photoelectron spectroscopy (HXPS) system by combining a focused monochromatic Cr Kα X-ray source, a wide angle acceptance objectiv...
Infrared Hunting for New Hidden Hard X-ray Sources：Observations and Instrumentation
Infrared Hunting New Hidden Hard X-ray Sources
2009/7/1
Infrared Hunting for New Hidden Hard X-ray Sources：Observations and Instrumentation。
The nature of the compact object in the hard x-ray Source 4u2206+54
hard x-ray Source 4u2206+54
2009/6/17
The nature of the compact object in the hard x-ray Source 4u2206+54。
Morphology and Spectral Behavior of Solar Hard X-Ray Sources。
Hard X-ray Spectrum of Mkn 421 during the Active Phase
X-rays BL Lac sources massive black hole candidates jet emission individual—Mkn 421
2009/5/20
Spectral measurement of Mkn 421 were made in the hard Xray
energy band of 20–200 keV using a high sensitivity, large area scintillation
counter telescope on November 21, 2000 and these coincided wit...
Plasma Focus as a Powerful Hard X-Ray Source for Ultrafast Imaging of Moving Metallic Objects
Plasma Focus a Powerful Hard X-Ray Source Ultrafast Imaging Moving Metallic Objects
2010/10/27
Using high energy, pulsed X-rays, generated by a 4.7 kJ Plasma Focus operated with deuterium - argon admixtures, images of fast rotating metallic pieces were obtained. This illustrates the potential a...