GRB 140102A: insight into prompt spectral evolution and early optical afterglow emission

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68378271:_____/21:00552691

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

GRB 140102A: insight into prompt spectral evolution and early optical afterglow emission

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

GRB 140102A: insight into prompt spectral evolution and early optical afterglow emission

Popis výsledku anglicky

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).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Svazek periodika

505

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

4086-4105

Kód UT WoS článku

000671481700068

EID výsledku v databázi Scopus

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