A powerful bursting radio source towards the Galactic Centre

Scott D. Hyman (), T. Joseph W. Lazio, Namir E. Kassim, Paul S. Ray, Craig B. Markwardt and Farhad Yusef-Zadeh
Additional contact information
Scott D. Hyman: Sweet Briar College
T. Joseph W. Lazio: Naval Research Laboratory, Code 7213
Namir E. Kassim: Naval Research Laboratory, Code 7213
Paul S. Ray: Naval Research Laboratory
Craig B. Markwardt: NASA Goddard Space Flight Center
Farhad Yusef-Zadeh: Northwestern University

Nature, 2005, vol. 434, issue 7029, 50-52

Abstract: New radio source A transient radio source with unique properties has been discovered close the centre of our Galaxy. Its powerful radio bursts, clock-like regularity and unusual timescale imply a temperature greater than trillions of degrees. This high temperature in turn implies that the radiation emitted from all parts of the radio source is ‘coherent’ — that is, it is almost entirely of a single wavelength. This combination of properties makes it a hitherto unknown type of radio source, though it may not be ‘unique’ for long. The discovery was made possible by a new observational strategy, wide-field imaging at low frequencies, which can be expected to come up with more intriguing sources in future.

Date: 2005
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DOI: 10.1038/nature03400

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