AGN in Clusters of Galaxies - Berkeley Cosmology Group
AGN in Clusters of Galaxies - Berkeley Cosmology Group
AGN in Clusters of Galaxies - Berkeley Cosmology Group
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Sources <strong>of</strong> X-ray Emission<br />
1. Accretion onto supermassive black holes<br />
• evidence that galaxies reta<strong>in</strong> cold gas<br />
• can easily produce L X>10 42 erg/s<br />
2. Low mass X-ray b<strong>in</strong>aries<br />
• can produce L X < 10 41 erg/s <strong>in</strong> massive galaxies<br />
3. Hot X-ray halos<br />
• <strong>in</strong>terest<strong>in</strong>g if still present <strong>in</strong> cluster ellipticals<br />
• may be as lum<strong>in</strong>ous as L X ~10 41 erg/s<br />
4. Starbursts<br />
• rare <strong>in</strong> clusters and would exhibit strong [OII], etc.<br />
• the most extreme local starbursts have L X ~10 41 erg/s
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