Results 31 to 40 of about 266 (138)
X-ray selected clusters of galaxies [PDF]
Symposium - International Astronomical Union, 1988 Studies of the evolution of X-ray emission from clusters of galaxies have so far used optically discovered distant clusters then observed at X-ray wavelengths. A different approach to the study of cluster evolution is to use clusters selected directly by their X-ray emission since X-ray selection is extremely successful at discovering high redshift ...
Isabella M. Gioia +5 more
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Helium and Iron in X-ray Galaxy Clusters [PDF]
, 2007 I discuss the role of the sedimentation of helium in galaxy cluster cores on the observed X-ray properties and present a history of the metal accumulation in the ICM, with new calculations with respect to my previous work following the recent evidence of a bi-modal distribution of the delay time in Supernovae Type Ia.
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Evolution of the X-Ray Properties of Clusters of Galaxies [PDF]
, 1994 16 pages, 11 figures, invited review at the conference Matter and Energy in Clusters of ...
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X-ray Spectra of Clusters of Galaxies [PDF]
International Astronomical Union Colloquium, 1990 AbstractX-ray line observations of clusters of galaxies have shown that the X-ray emission in clusters is mainly thermal emission from hot diffuse gas, and that much of this gas has come out of stars, probably having been ejected from galaxies in the cluster. Future high resolution observations should allow us to determine the physical state of the gas.
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Space Weather, Volume 24, Issue 8, August 2026.Abstract The period from 1 to 14 May 2024 was marked by some of the most intense solar activity of Solar Cycle 25, including multiple X‐class flares, fast coronal mass ejections (CMEs), and diverse solar radio emissions. We present observations from the Mexican e‐Callisto network (REC‐Mx), including long‐duration continuum emissions (CTMs), Type II ...
E. Aguilar‐Rodriguez +23 more
wiley +1 more source
X-ray spectroscopy of Galaxy Clusters
, 2023 Invited lecture given at the AHEAD2020 High-resolution X-ray spectroscopy school in Alicante, May 22-25 ...
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Nanoscale space weathering features in mature lunar soil revealed by TEM and APT
Meteoritics &Planetary Science, Volume 61, Issue 8, Page 2048-2072, August 2026.Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer +6 more
wiley +1 more source
Advanced Materials, Volume 38, Issue 37, 2 July 2026.A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho +3 more
wiley +1 more source
Clusters of Galaxies in X-rays
, 1998 X-ray observations of clusters at different redshifts are presented and compared. For the nearest cluster -- the Virgo cluster -- we show a comparison of the galaxy distribution and the distribution of the intra-cluster gas. Although the Virgo cluster has such an irregular structure, it seems that within each of the subclusters some kind of equilibrium
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Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source