GRB 140102A: insight into prompt spectral evolution and early optical afterglow emission
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00552691" target="_blank" >RIV/67985815:_____/21:00552691 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/21:00552691
Result on the web
<a href="https://doi.org/10.1093/mnras/stab1573" target="_blank" >https://doi.org/10.1093/mnras/stab1573</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stab1573" target="_blank" >10.1093/mnras/stab1573</a>
Alternative languages
Result language
angličtina
Original language name
GRB 140102A: insight into prompt spectral evolution and early optical afterglow emission
Original language description
We present and perform a detailed analysis of multiwavelength observations of GRB 140102A, an optical bright GRB with an observed reverse shock (RS) signature. Observations of this GRB were acquired with the BOOTES-4 robotic telescope, the Fermi, and the Swift missions. Time-resolved spectroscopy of the prompt emission shows that changes to the peak energy (E-p) tracks intensity and the low-energy spectral index seems to follow the intensity for the first episode, whereas this tracking behaviour is less clear during the second episode. The fit to the afterglow light curves shows that the early optical afterglow can be described with RS emission and is consistent with the thin shell scenario of the constant ambient medium. The late time afterglow decay is also consistent with the prediction of the external forward shock model. We determine the properties of the shocks, Lorentz factor, magnetization parameters, and ambient density of GRB 140102A, and compare these parameters with another 12 GRBs, consistent with having RS produced by thin shells in an interstellar medium like medium. The value of the magnetization parameter (R-B approximate to 18) indicates a moderately magnetized baryonic dominant jet composition for GRB 140102A. We also report the host galaxy photometric observations of GRB 140102A obtained with 10.4m GTC, 3.5 m Calar Alto Astronomical Observatory, and 3.6m Devasthal optical telescope and find the host (photo z = 2.8(-0.9)(+0.7)) to be a high-mass, star-forming galaxy with a star formation rate of 20 +/- 10 M(circle dot)yr(-1).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
505
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
20
Pages from-to
4086-4105
UT code for WoS article
000671481700068
EID of the result in the Scopus database
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