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Journey Leads Astronomer to New Galactic Structure

MADISON - For Ron Reynolds, an early peek at what would turn out to be a major new feature of the Milky Way came through a hole in the ceiling.

As a physics post-doc at the University of Wisconsin-Madison in the late 1970s, Reynolds sawed a hole in the ceiling of an office of the university's Physical Science Laboratory. Pointing a specially built spectrometer through the roof of the bui......

Full article >>> rons - might permeate the heavens emerged with the discovery of pulsars in the 1960s. The pulses of energy emitted by the dense, rapidly spinning pulsars span much of the electromagnetic spectrum. But a phenomenon known as 'pulse dispersion,' where the low-energy photons of a pulse tended to arrive at detectors on Earth after the high-energy photons, suggested that the pulse was traveling through ......

Full article >>> ndation-funded device on Kitt Peak was used over a two-year period to take more than 37,000 30-second exposures of the sky in a detailed survey of the ionized gas in the galaxy.

"We now have a complete picture of hydrogen in the interstellar medium," says Reynolds of the gas in the Milky Way. Similar structures of ionized hydrogen have subsequently been found in other galaxies as well.
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Source:wistechnology.com By Terry Devitt 02/13/04


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