Bubbles as tracers of heat input to cooling flows

被引：30

作者：

Binney, J. ^{[1
]}

Bibi, F. Alouani ^{[1
]}

Omma, H. ^{[1
]}

机构：

[1] St Johns Res Ctr, Oxford OX1 3JP, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 377卷 / 01期

关键词：

galaxies : clusters : general; cooling flows; galaxies : formation;

D O I：

10.1111/j.1365-2966.2007.11575.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine the distribution of injected energy in three-dimensional, adaptive-grid simulations of the heating of cooling flows. We show that less than 10 per cent of the injected energy goes into bubbles. Consequently, the energy input from the nucleus is underestimated by a factor of order 6 when it is taken to be given by PV gamma/(gamma - 1), where P and V are the pressure and volume of the bubble, and gamma is the ratio of principal specific heats.

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收藏

页码：142 / 146

页数：5

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