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Science 4 October 2002:
Vol. 298. no. 5591, pp. 73 - 74
DOI: 10.1126/science.1076961
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Perspectives

Also see the archival list of Science's Compass: Enhanced Perspectives

ASTRONOMY:
Enhanced: Microquasar Fireworks

Michael P. Rupen

Microquasars--the smaller cousins of radio galaxies and quasars--are characterized by transient relativistic jets that move away from the central black hole. By analogy to these larger systems, researchers expected to see how the jets crash into the interstellar environment. But as Rupen explains in his Perspective, earlier studies found little sign of interactions of the jets with the interstellar medium. He highlights the study by Corbel et al., who report direct evidence for such interactions.

The author is at the National Radio Astronomy Observatory, Socorro, NM 87081, USA. E-mail: mrupen{at}aoc.nrao.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)