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Article Contents

ABSTRACT

1.INTRODUCTION

2.OVERVIEW OF HOT GAS FLOWS IN AND NEAR ELLIPTICAL GALAXIES

3.BASIC PROPERTIES OF ELLIPTICAL GALAXIES AND THEIR HOT GAS

4.HYDROSTATIC EQUILIBRIUM AND MASS DETERMINATIONS

5.GAS DYNAMICAL EQUATIONS AND CLASSIC COOLING FLOWS

6.SIMPLE COOLING FLOW MODELS

7.THE COOLING PARADOX - DOES THE GAS COOL?

7.1.Spectroscopic and Morphological Cooling Rates

7.2.Warm and Cold Gas at T < 10⁵ K

7.3.Dust in Elliptical Galaxies

7.4.Origin of Warm Gas, Cold Gas and Dust

7.5.Hiding the Cooling Gas

8.COOLING FLOWS HEATED BY ACTIVE NUCLEI

8.1.Chandra Observations and Entropy Floors

8.2.AGN Heating

8.3.Cooling Flow Models with Heating

8.4.Models of X-ray Cavities

9.ROTATION AND MAGNETIC FIELDS

10.ABUNDANCES IN THE HOT GAS

REFERENCES