Conduction Cooling: Multicrate FASTBUS Hardware
نویسندگان
چکیده
منابع مشابه
Conduction and cooling flows
Chandra and XMM-Newton observations have confirmed the presence of large temperature gradients within the cores of many relaxed clusters of galaxies. Here we investigate whether thermal conduction operating over those gradients can supply sufficient heat to offset radiative cooling. Narayan & Medvedev (2001) and Gruzinov (2002) have noted, using published results on cluster temperatures, that c...
متن کاملOn conduction , cooling flows and galaxy formation
On the basis of the universal gas fraction in clusters of galaxies, we estimate that the effective thermal conductivity required to balance radiative cooling in the cores, where the gas temperature is 3–10 keV, is about one tenth of the Spitzer rate. This confirms that thermal conduction can be important for the energy balance provided that it is not highly suppressed by magnetic fields in the ...
متن کاملHeating, Conduction and Minimum Temperatures in Cooling Flows
There is mounting observational evidence from Chandra for strong interaction between keV gas and AGN in cooling flows. It is now widely accepted that the temperatures of cluster cores are maintained at a level of ∼ 1 keV and that the mass deposition rates are lower than earlier ROSAT/Einstein values. Recent theoretical results suggest that thermal conduction can be very efficient even in magnet...
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I study non-radiative cooling of X-ray emitting gas via heat conduction along magnetic field lines inside magnetic flux loops in cooling flow clusters of galaxies. I find that such heat conduction can reduce the fraction of energy radiated in the X-ray band by a factor of ∼ 1.5− 2. This non-radiative cooling joins two other proposed non-radiative cooling processes, which can be more efficient. ...
متن کاملCooling of X-Ray Emitting Gas by Heat Conduction in the Center of Cooling Flow Clusters
We study the possibility that a large fraction of the gas at temperatures of ∼ 10 K in cooling flow clusters cools by heat conduction to lower temperatures, rather than by radiative cooling. We argue that this process, when incorporated into the so-called “moderate cooling flow model,” where the effective age of the intracluster medium is much lower than the age of the cluster, reduces substant...
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ژورنال
عنوان ژورنال: IEEE Transactions on Nuclear Science
سال: 1981
ISSN: 0018-9499
DOI: 10.1109/tns.1981.4331208