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Fast X-Ray and Beamlet Transforms for Three-Dimensional Data
Three-Dimensional Data 3-D Volumetric (Raster-Scan) Dat
2015/8/21
Three-dimensional volumetric data are becoming increasingly available
in a wide range of scientific and technical disciplines. With the right tools,
we can expect such data to yield valuable i...
2014年1月5日，应大地测量与地球动力学国家重点实验室的邀请，美国国家大地测量局Jim Ray博士访问中国科学院测量与地球物理研究所，并作题为Subseaconal GNSS Errors In IGS Products的学术报告。测地所主持工作副所长王勇研究员等20余名科研人员和研究生参加报告会。报告会由测地所副所长、大地测量与地球动力学国家重点实验室主任倪四道主持。
Pore formation during dehydration of a polycrystalline gypsum sample observed and quantified in a time-series synchrotron X-ray micro-tomography experiment
polycrystalline gypsum sample Pore formation
2015/1/4
We conducted an in-situ X-ray micro-computed
tomography heating experiment at the Advanced Photon
Source (USA) to dehydrate an unconfined 2.3 mm diameter
cylinder of Volterra Gypsum. We used ...
Pore formation during dehydration of a polycrystalline gypsum sample observed and quantified in a time-series synchrotron X-ray micro-tomography experiment
Pore formation during dehydration a polycrystalline gypsum sample time-series synchrotron X-ray micro-tomography experiment
2015/1/4
We conducted an in-situ X-ray micro-computed tomography heating experiment at the Advanced Photon Source (USA) to dehydrate an unconfined 2.3 mm diameter cylinder of Volterra Gypsum. We used a purpose...
Professor Ray Durrheim，School of Geosciences at South Africa's Wits Universit（图）
School of Geosciences at South Africa's Wits Universit Professor using both explosive mine tremor energy sources the application of the reflection seismic method
2014/12/29
Ray Durrheim was born in Bloemfontein in 1956. He is a graduate of Stellenbosch (BSc, 1977), Wits (BSc Hons, 1978 and PhD, 1990), Pretoria (MSc, 1984), and UNISA (BA, 1984).He started his career in 19...
Hydrodynamic simulation of the cosmological X-ray background
observations large scale structure of Universe
2014/12/26
We use a hydrodynamic simulation of an inflationary cold dark matter model with a cosmological constant to predict properties of the extragalactic X-ray background (XRB). We focus on emission from the...
Detection of X-Ray Emission from the Arches Cluster near the Galactic Center
mass loss winds
2014/12/26
The Arches cluster is an extraordinarily compact massive star cluster with a core radius of about 10'' (~0.4 pc) and consisting of more than 150 O star candidates with initial stellar masses greater t...
Chandra Observations of the Bursting X-Ray Transient SAX J1747.0–2853 during Low-Level Accretion Activity
SAX J1747.0–2853 stars
2014/12/26
We present Chandra/ACIS observations of the bursting X-ray transient SAX J1747.0-2853 performed on 2001 July 18. We detected a bright source at the position of R.A. = 17h47m02.s60 and decl. = -28°52'5...
We have examined Chandra observations of the recently discovered X-ray thread G0.13-0.11 in the Galactic center Radio Arc region. Part of the Chandra data was studied by Yusef-Zadeh, Law, & Wardle, wh...
Ultraluminous X-ray source 1E 0953.8+6918 (M81 X-9): an intermediate-mass black hole candidate and its environs
binaries bubbles
2014/12/26
We present a ROSAT and ASCA study of the Einstein source X-9 and its relation to a shock-heated shell-like optical nebula in a tidal arm of the M81 group of interacting galaxies. Our ASCA observation ...
Hiccups in the Night: X-ray Monitoring of the Two Crab-like LMC Pulsars
X-ray Monitoring the Two Crab-like LMC Pulsars
2014/12/26
We are undertaking an extensive X-ray monitoring campaign of the two Crab-like pulsars in the Large Magellanic Clouds, PSR B0540-69 and PSR J0537-6910. We present our current phase-connected timing an...
Hiccups in the Night: X-ray Monitoring of the Two Crab-like LMC Pulsars
X-ray Monitoring Two Crab-like LMC Pulsars
2014/12/26
We are undertaking an extensive X-ray monitoring campaign of the two Crab-like pulsars in the Large Magellanic Clouds, PSR B0540-69 and PSR J0537-6910. We present our current phase-connected timing an...
X-ray scaling relations of galaxy groups in a hydrodynamic cosmological simulation
theory clusters
2014/12/26
We examine the scalings of X-ray luminosity, temperature, and dark matter or galaxy velocity dispersion for galaxy groups in a ΛCDM cosmological simulation, which incorporates gravity, gas dynamics, r...
Discovery of a 136 Millisecond Radio and X-Ray Pulsar in Supernova Remnant G54.1+0.3
G54.1+0.3 PSR J1930+1852
2014/12/26
We report the discovery of a pulsar with period P = 136 ms and dispersion measure 308 cm-3 pc in a deep observation of the supernova remnant (SNR) G54.1+0.3 with the Arecibo radio telescope. Timing me...
The Chandra Detection of Galactic Center X-Ray Features G359.89−0.08 and G359.54+0.18
neutron supernova remnants
2014/12/24
We report the detection of two elongated X-ray features, G359.89-0.08 and G359.54+0.18, in the Galactic center (GC) region using the Chandra X-Ray Observatory. G359.89-0.08 is an elongated X-ray featu...