Results 101 to 110 of about 291 (131)
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1990
A critical review of the possible existence of a hot (T≥ l08 K) diffuse intergalactic medium (IGM) is given. Attention is paid to three main issues: its contribution to the X-ray background (XRB) by bremsstrahlung radiation, the Compton upscattering of the microwave background radiation (MBR) and the degree of dumpiness of the IGM. It is concluded that
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A critical review of the possible existence of a hot (T≥ l08 K) diffuse intergalactic medium (IGM) is given. Attention is paid to three main issues: its contribution to the X-ray background (XRB) by bremsstrahlung radiation, the Compton upscattering of the microwave background radiation (MBR) and the degree of dumpiness of the IGM. It is concluded that
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Cosmology with the intergalactic medium
Pramana, 1999We discuss a few new results which points out the importance of the intergalactic medium as a diagnostic for the formation and evolution of galaxies in the Universe. We discuss the recent studies to determine the power spectrum of fluctuation from QSO-absorption line studies, and then some feedback processes from early galaxies which influence the ...
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Heating of the Intergalactic Medium
The Astrophysical Journal, 1999Using the cosmic virial theorem, Press-Schechter analysis, and numerical simulations, we compute the expected X-ray background (XRB) from the diffuse intergalactic medium (IGM) with the clumping factor expected from gravitational shock heating. The predicted fluxes and temperatures are ruled out by the observed XRB.
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Construction of Medium-Sized Rings by Gold Catalysis
Chemical Reviews, 2021Ronald L Reyes +2 more
exaly
Direct observation of chemical short-range order in a medium-entropy alloy
Nature, 2021Xuefei Chen, Qi Wang, Zhiying Cheng
exaly
Accurate medium-range global weather forecasting with 3D neural networks
Nature, 2023, Lingxi Xie
exaly