19. Earth Region of Normal Galaxies Region of Active Galaxies Region of Quasars to 10 Mcy to 1 Bcy
Editor's Notes
VLA at 327 MHz This is the full extent of the radio source, about 80 kpc end-to-end. The inner lobes and jet can just be seen as the red structures in the center (and the nuclear black hole sits in the center of this inner structure). This picture thus covers an area larger than the optical galaxy; we are studying the inner region of the Virgo cluster. The galaxy, and its radio halo, sit in a large atmosphere of hot, X-ray loud gas (as detected by the EINSTEIN and ROSAT satellites).
![Variable Stars ,[object Object],[object Object],[object Object],[object Object],Henrietta Leavitt 1868 – 1921 http://www.pbs.org/wgbh/aso/databank/entries/baleav.html](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)