Results 21 to 30 of about 1,466,277 (352)

Hard X-ray lags in GRO J1719-24 [PDF]

, 1999
We have used the Fourier cross spectra of GRO J1719-24, as obtained with BATSE, to estimate the phase lags between the X-ray flux variations in the 20--50 and 50--100 keV energy bands as a function of Fourier frequency in the interval 0.002--0.488 Hz ...
B. A. Harmon, Belloni T., C. Kouveliotou, D. J. Crary, Della Valle M., F. van der Hooft, J. van Paradijs, M. H. Finger, M. van der Klis, Masetti N., Revnivtsev M., S. N. Zhang, van der Hooft F., W. H. G. Lewin, W. S. Paciesas   +14 more
core   +2 more sources

X-ray and Radio Timing of the Pulsar in 3C 58 [PDF]

, 2009
We present timing data spanning 6.4 yr for the young and energetic PSR J0205+6449, in the supernova remnant 3C 58. Data were obtained with the Rossi X-ray Timing Explorer, the Jodrell Bank Observatory and the Green Bank Telescope.
Abdo, Abdo, Abdo, Abdo, Abdo, Andrew G. Lyne, Becker, Becker, Bietenholz, Bietenholz, Buccheri, Camilo, Chatterjee, De Jager, De Luca, Dib, Fernando Camilo, Gonzalez, Gotthelf, Halpern, Harding, Hermsen, Ingrid H. Stairs, Jahoda, Kaspi, Kaspi, Kramer, Kuiper, Livingstone, Lyne, Lyne, Lyne, Margaret A. Livingstone, Michael Kramer, Murray, Ng, Pellizzoni, Pellizzoni, Ramanamurthy, Ransom, Ransom, Roberts, Rots, Rots, Scott M. Ransom, Slane, Slane, Stephenson, Tam, Thompson, Torii, Urama, Victoria M. Kaspi, Zavlin, Zavlin   +54 more
core   +1 more source

Hard X-ray variability of the black-hole candidate GRO J0422+32 during its 1992 outburst [PDF]

, 1998
We have studied the hard X-ray variability of the soft X-ray transient GRO J0422+32 with BATSE in the 20-100 keV energy band. Our analysis covers 180 days following the first X-ray detection of the source on 1992 August 5, fully covering its primary and ...
Crary, D. J., Finger, M. H., Harmon, B. A., Kouveliotou, C., Lewin, W. H. G., Paciesas, W. S., van der Hooft, F., van der Klis, M., van Paradijs, J., Zhang, S. N.   +9 more
core   +3 more sources

Imaging of metastatic lymph nodes by X-ray phase-contrast micro-tomography. [PDF]

PLoS ONE, 2013
Invasive cancer causes a change in density in the affected tissue, which can be visualized by x-ray phase-contrast tomography. However, the diagnostic value of this method has so far not been investigated in detail.
Torben Haugaard Jensen, Martin Bech, Tina Binderup, Arvid Böttiger, Christian David, Timm Weitkamp, Irene Zanette, Elena Reznikova, Jürgen Mohr, Fritz Rank, Robert Feidenhans'l, Andreas Kjær, Liselotte Højgaard, Franz Pfeiffer   +13 more
doaj   +1 more source

Influence of High-Temperature Oxidizing Conditions on AlCoCrCuNi High Entropy Alloys with and without Silicon Addition [PDF]

Archives of Metallurgy and Materials, 2022
Initial investigations on oxidation behaviour and phase transformations of equimolar AlCoCrCuNi high entropy alloy with and without 1 at.% silicon addition during 24-hr exposure to air atmosphere at 1273 K was carried out in this work.
R. Gawel, Ł. Rogal, K. Przybylski, Kenji Matsuda   +3 more
doaj   +1 more source

Determination of metallization degree of pre-reduced chromite with image and rietveld analysis [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2020
Metallization degree of pre-reduced chromite was determined using two methods. The chromite samples were reduced in the solid state by methane-hydrogen gas mixtures.
Leino T., Taskinen P., Eric R.H.
doaj   +1 more source

Detailed X-ray spectroscopy of the magnetar 1E 2259+586 [PDF]

, 2019
Magnetic field geometry is expected to play a fundamental role in magnetar activity. The discovery of a phase-variable absorption feature in the X-ray spectrum of SGR 0418+5729, interpreted as cyclotron resonant scattering, suggests the presence of very ...
Esposito, P., Israel, G., Mereghetti, S., Pizzocaro, D., Rea, N., Stella, L., Tiengo, A., Turolla, R., Zane, S., Zelati, F. Coti   +9 more
core   +3 more sources

Acquisition of a single grid-based phase-contrast X-ray image using instantaneous frequency and noise filtering

BioMedical Engineering OnLine, 2022
Background To obtain phase-contrast X-ray images, single-grid imaging systems are effective, but Moire artifacts remain a significant issue. The solution for removing Moire artifacts from an image is grid rotation, which can distinguish between these ...
Jae-Suk Yang, Sun-Young Jeon, Jang-Hwan Choi   +2 more
doaj   +1 more source

Phase-resolved spectral analysis of 4U 1901+03 during its outburst [PDF]

, 2009
The high mass X-ray binary 4U 1901+03 was reported to have the pulse profile evolving with the X-ray luminosity and energy during its outburst in February-July 2003: the pulse peak changed from double to single along with the decreasing luminosity.
Arnaud, Basko, Basko, Basko, Coburn, Corbet, Crawford, Dorman, Galloway, Galloway, Galloway, Hao-Tong Zhang, Hickox, Jin-Lu Qu, Kirk, Li-Ming Song, Mukerjee, Nagase, Nagase, Naik, Paul, Shu Zhang, Suchy, Ti-Pei Li, Wang, Wang, Wei Chen, Wilson, Ya-Juan Lei, Yu Lu   +29 more
core   +1 more source

Effect of (CuPb)x Substitution on Tc of Bi2-x(CuPb)x Sr2Ca2Cu3O10+δ Superconductors [PDF]

Engineering and Technology Journal, 2012
High temperature superconductors with a nominal composition Bi2-x (CuPb) xSr2Ca2Cu3O10+δ for (0≤x≤0.5) were prepared by solid state reaction method. The effect of (CuPb) x substitution on Tc of Bi2-x(CuPb)xSr2Ca2Cu3O10+δ compound has been investigated by
Bushra Salman Mahdi
doaj   +1 more source