The magnetic field and turbulence of the cosmic web measured using a brilliant fast radio burst

Fast radio bursts (FRBs) are millisecond-duration events thought to originate beyond the Milky Way galaxy. Uncertainty surrounding the burst sources, and their propagation through intervening plasma, has limited their use as cosmological probes. We report on a mildly dispersed (dispersion measure 26...

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Veröffentlicht in:	arXiv.org 2016-11
Hauptverfasser:	Ravi, V, Shannon, R M, Bailes, M, Bannister, K, Bhandari, S, Bhat, N D R, Burke-Spolaor, S, Caleb, M, Flynn, C, Jameson, A, Johnston, S, Keane, E F, Kerr, M, Tiburzi, C, Tuntsov, A V, Vedantham, H K
Format:	Artikel
Sprache:	eng
Schlagworte:	Dispersion Faraday effect Intergalactic media Linear polarization Magnetization Milky Way Physics - Cosmology and Nongalactic Astrophysics Physics - High Energy Astrophysical Phenomena Radio bursts Turbulence Webs
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Zusammenfassung:	Fast radio bursts (FRBs) are millisecond-duration events thought to originate beyond the Milky Way galaxy. Uncertainty surrounding the burst sources, and their propagation through intervening plasma, has limited their use as cosmological probes. We report on a mildly dispersed (dispersion measure 266.5+-0.1 pc cm^-3), exceptionally intense (120+-30 Jy), linearly polarized, scintillating burst (FRB 150807) that we directly localize to 9 arcmin^2. Based on a low Faraday rotation (12.0+-0.7 rad m^-2), we infer negligible magnetization in the circum-burst plasma and constrain the net magnetization of the cosmic web along this sightline to
ISSN:	2331-8422
DOI:	10.48550/arxiv.1611.05758