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dc.contributor.authorObenberger, K.
dc.contributor.authorDowell, J.
dc.contributor.authorHancock, Paul
dc.contributor.authorHolmes, J.
dc.contributor.authorPedersen, T.
dc.contributor.authorSchinzel, F.
dc.contributor.authorTaylor, G.
dc.date.accessioned2017-01-30T10:53:24Z
dc.date.available2017-01-30T10:53:24Z
dc.date.created2016-11-17T19:30:19Z
dc.date.issued2016
dc.identifier.citationObenberger, K. and Dowell, J. and Hancock, P. and Holmes, J. and Pedersen, T. and Schinzel, F. and Taylor, G. 2016. Rates, flux densities, and spectral indices of meteor radio afterglows. Journal of Geophysical Research: Space Physics. 121 (7): pp. 6808-6817.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/6473
dc.identifier.doi10.1002/2016JA022606
dc.description.abstract

©2016. American Geophysical Union. All Rights Reserved. Using the narrowband all-sky imager mode of the Long Wavelength Array (LWA1), we have now detected 30 transients at 25.6 MHz, 1 at 34 MHz, and 93 at 38.0 MHz. While we have only optically confirmed that 37 of these events are radio afterglows from meteors, evidence suggests that most, if not all, are. Using the beam-forming mode of the LWA1, we have also captured the broadband spectra between 22.0 and 55.0 MHz of four events. We compare the smooth, spectral components of these four events and fit the frequency-dependent flux density to a power law, and find that the spectral index is time variable, with the spectrum steepening over time for each meteor afterglow. Using these spectral indices along with the narrowband flux density measurements of the 123 events at 25.6 and 38 MHz, we predict the expected flux densities and rates for meteor afterglows potentially observable by other low-frequency radio telescopes.

dc.publisherWiley-Blackwell Publishing
dc.titleRates, flux densities, and spectral indices of meteor radio afterglows
dc.typeJournal Article
dcterms.source.volume121
dcterms.source.number7
dcterms.source.startPage6808
dcterms.source.endPage6817
dcterms.source.issn2169-9380
dcterms.source.titleJournal of Geophysical Research: Space Physics
curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.accessStatusFulltext not available


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