Limits on optical polarization duringt the prompt phase of GRB 140430a
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00472857" target="_blank" >RIV/67985815:_____/15:00472857 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0004-637X/813/1/1" target="_blank" >http://dx.doi.org/10.1088/0004-637X/813/1/1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0004-637X/813/1/1" target="_blank" >10.1088/0004-637X/813/1/1</a>
Alternative languages
Result language
angličtina
Original language name
Limits on optical polarization duringt the prompt phase of GRB 140430a
Original language description
Gamma-ray burst GRB 140430A was detected by the Swift satellite and observed promptly with the imaging polarimeter RINGO3 mounted on the Liverpool Telescope, with observations beginning while the prompt.-ray emission was still ongoing. In this paper, we present densely sampled (10-s temporal resolution) early optical light curves (LCs) in 3 optical bands and limits to the degree of optical polarization. We compare optical, X-ray, and gammaray properties and present an analysis of the optical emission during a period of high-energy flaring. The complex optical LC cannot be explained merely with a combination of forward and reverse shock emission from a standard external shock, implying additional contribution of emission from internal shock dissipation. We estimate an upper limit for time averaged optical polarization during the prompt phase to be as low as P < 12% (1 sigma). This suggests that the optical flares and early afterglow emission in this GRB are not highly polarized. Alternatively, time averaging could mask the presence of otherwise polarized components of distinct origin at different polarization position angles.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
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Volume of the periodical
813
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
"1/1"-"1/14"
UT code for WoS article
000365284100001
EID of the result in the Scopus database
2-s2.0-84946712252