First very low frequency detection of short repeated bursts from magnetar SGR J1550-5418

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dc.contributor.authorTanaka Y.T.
dc.contributor.authorRaulin J.-P.
dc.contributor.authorBertoni F.C.P.
dc.contributor.authorFagundes P.R.
dc.contributor.authorChau J.
dc.contributor.authorSchuch N.J.
dc.contributor.authorHayakawa M.
dc.contributor.authorHobara Y.
dc.contributor.authorTerasawa T.
dc.contributor.authorTakahashi T.
dc.date.accessioned2024-03-13T01:30:55Z
dc.date.available2024-03-13T01:30:55Z
dc.date.issued2010
dc.description.abstractWe report on the first detection of ionospheric disturbances caused by short repeated gamma-ray bursts from the magnetar SGR J1550-5418. Very low frequency (VLF) radio wave data obtained in South America clearly show sudden amplitude and phase changes at the corresponding times of eight soft gamma-ray repeater bursts.Maximum amplitude and phase changes of the VLF signals appear to be correlated with the gamma-ray fluence. On the other hand, VLF recovery timescales do not show any significant correlation with the fluence, possibly suggesting that the bursts' spectra are not similar to each other. In summary, Earth's ionosphere can be used as a very large gamma-ray detector and the VLF observations provide us with a new method to monitor high-energy astrophysical phenomena without interruption such as Earth occultation. © 2010. The American Astronomical Society. All rights reserved.
dc.description.issuenumber1 PART 2
dc.description.volume721
dc.identifier.doi10.1088/2041-8205/721/1/L24
dc.identifier.issn2041-8213
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37150
dc.relation.ispartofAstrophysical Journal Letters
dc.rightsAcesso Aberto
dc.subject.otherlanguageStars: individual (SGR J1550-5418)
dc.subject.otherlanguageStars: neutron
dc.titleFirst very low frequency detection of short repeated bursts from magnetar SGR J1550-5418
dc.typeArtigo
local.scopus.citations37
local.scopus.eid2-s2.0-78649244798
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649244798&origin=inward
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