The discovery of terrestrial, swept-frequency emission that mimics an interstellar dispersive delay
MetadataShow full item record
We will detail the discovery of an anomalous terrestrial source of pulsed emission which exhibits a frequency-swept signal that closely mimics the frequency-dependent delay induced by dispersion in interstellar plasma. The signals were detected through the far sidelobes of Parkes Radio Telescope, appearing in all of the 13 independently-positioned receivers installed at the dish focus. The frequency-dependent delay and the sweep rates for most of the bursts are similar to those of a burst previously purported to be extragalactic. These bursts both call into question the extragalactic nature of that burst, and highlight the limitations of performing searches for one-off impulses with single dishes, in that they experience ambiguity in the positional localization of burst origins. © 2011 IEEE.
Showing items related by title, author, creator and subject.
McCauley, P.; Cairns, I.; Morgan, John; Gibson, S.; Harding, J.; Lonsdale, C.; Oberoi, D. (2017)© 2017. The American Astronomical Society. All rights reserved.. We present low-frequency (80-240 MHz) radio imaging of type III solar radio bursts observed by the Murchison Widefield Array on 2015 September 21. The source ...
Giersch, O.; Kennewell, J.; Lynch, Mervyn (2017)©2017. American Geophysical Union. Solar radio bursts have the potential to affect space and terrestrial navigation, communication, and other technical systems that are sometimes overlooked. However, over the last decade ...
Burke-Spolaor, S.; Bailes, M.; Ekers, Ronald; Macquart, Jean-Pierre; Crawford III, F. (2011)Three years ago, the report of a solitary radio burst was thought to be the first discovery of a rare, impulsive event of unknown extragalactic origin. The extragalactic interpretation was based on the swept-frequency ...