English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Using the RHESSI satellite as a Compton polarimeter, a recent study claimedthat the prompt emission of GRB021206 was almost fully linearly polarized. Thiswas challenged by a subsequent reanalysis. We present an novel approach,applying our method to the same data. We identify Compton scattering candidatesby carefully filtering events in energy, time, and scattering geometry. Ourpolarization search is based on time dependent scattering rates inperpendicular directions, thus optimally excluding systematic errors. Weperform simulations to obtain the instrument's polarimetric sensitivity, andthese simulations include photon polarization. For GRB021206, we formally finda linear polarization degree of 41% (+57% -44%), concluding that the dataquality is insufficient to constrain the polarization degree in this case. Wefurther applied our analysis to GRB030519B and found again a null result.Comment: 39 pages, 11 figures, accepted for publication by the Astrophysical  Journa

Gamma‐Ray Burst Polarization: Limits fromRHESSIMeasurements