The Strongly Polarized Afterglow of GRB 020405 | Zendy

D. Bersier | Zendy; B. A. McLeod | Zendy; P. Garnavich | Zendy; M. J. Holman | Zendy; T. Grav | Zendy; J. Quinn | Zendy; J. Kałużny | Zendy; P. Challis | Zendy; R. G. Bower | Zendy; David J. Wilman | Zendy; Jeremy Heyl | Zendy; S. T. Holland | Zendy; V. Hradecky | Zendy; Saurabh W. Jha | Zendy; K. Z. Stanek | Zendy

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The Strongly Polarized Afterglow of GRB 020405

Author(s) -

D. Bersier,

B. A. McLeod,

P. Garnavich,

M. J. Holman,

T. Grav,

J. Quinn,

J. Kałużny,

P. Challis,

R. G. Bower,

David J. Wilman,

Jeremy Heyl,

S. T. Holland,

V. Hradecky,

Saurabh W. Jha,

K. Z. Stanek

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/368158

Subject(s) - afterglow , gamma ray burst , physics , light curve , astrophysics , photometry (optics) , polarization (electrochemistry) , astronomy , power law , chemistry , stars , statistics , mathematics

We report polarization measurements and photometry for the optical afterglowof the gamma-ray burst GRB 020405. We measured a highly significant 9.9%polarization (in V band) 1.3 days after the burst and argue that it isintrinsic to the GRB. The light curve decay is well fitted by a $t^{-1.72}$power-law; we do not see any evidence for a break between 1.24 and 4.3 daysafter the burst. We discuss these measurements in the light of several modelsof GRB afterglows.Comment: submitted to ApJ

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