{"paper":{"title":"Limits on radio emission from meteors using the MWA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"A. Beardsley, A. Williams, B. Crosse, B. M. Gaensler, C. M. Trott, C. Wu, D. Emrich, D. Kenney, D. L. Kaplan, D. Pallot, Hadrien A. R. Devillepoix, Jianghui Ji, K. Steele, L. Horsley, M. F. Morales, M. Johnston-Hollitt, M. Walker, Paul Hancock, Randall B. Wayth, S. J. Tingay, T. M. O. Franzen, Xiang Zhang, Yuehua Ma","submitted_at":"2018-04-19T09:59:38Z","abstract_excerpt":"Recently, low frequency, broadband radio emission has been observed accompanying bright meteors by the Long Wavelength Array (LWA). The broadband spectra between 20 and 60 MHz were captured for several events, while the spectral index (dependence of flux density on frequency, with $S_\\nu \\propto \\nu^\\alpha$) was estimated to be $-4\\pm1$ during the peak of meteor afterglows. Here we present a survey of meteor emission and other transient events using the Murchison Widefield Array (MWA) at 72-103 MHz. In our 322-hour survey, down to a $5\\sigma$ detection threshold of 3.5 Jy/beam, no transient ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07060","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}