Early time optical polarization of GRB Afterglows: GRB 060418 and GRB 090102

C. G. Mundell; C. Guidorzi; I. A. Steele; R. J. Smith; S. Kobayashi

arxiv: 0912.3391 · v1 · submitted 2009-12-17 · 🌌 astro-ph.HE · astro-ph.CO

Early time optical polarization of GRB Afterglows: GRB 060418 and GRB 090102

I. A. Steele , C. G. Mundell , R. J. Smith , S. Kobayashi , C. Guidorzi This is my paper

classification 🌌 astro-ph.HE astro-ph.CO

keywords opticalpolarizationafterglowscompetingdescribedetectiondetermineddiscuss

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RINGO on the Liverpool Telescope has now measured the optical polarization of GRB 060418 (where a 2 sigma upper limit of P<8% was determined) and GRB 090102 (when a detection of P = 10 +/-1 % was made). We discuss the implications of these observations for the various competing models of GRB jet magnetization and describe a possible unified model that can explain both measurements.

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Early time optical polarization of GRB Afterglows: GRB 060418 and GRB 090102

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