Transition from fireball to Poynting-flux-dominated outflow in the three-episode GRB 160625B

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00496050" target="_blank" >RIV/67985815:_____/18:00496050 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1038/s41550-017-0309-8" target="_blank" >http://dx.doi.org/10.1038/s41550-017-0309-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41550-017-0309-8" target="_blank" >10.1038/s41550-017-0309-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Transition from fireball to Poynting-flux-dominated outflow in the three-episode GRB 160625B

Popis výsledku v původním jazyce

We report an extraordinarily bright GRB 160625B, simultaneously observed in gamma-ray and optical wavelengths, whose prompt emission consists of three isolated episodes separated by long quiescent intervals, with the durations of each sub-burst being approximately 0.8 s, 35 s and 212 s, respectively. Its high brightness (with isotropic peak luminosity L-p,L-iso approximate to 4 x 10(53) erg s(-1)) allows us to conduct detailed time-resolved spectral analysis in each episode, from precursor to main burst and to extended emission. The spectral properties of the first two sub-bursts are distinctly different, allowing us to observe the transition from thermal to non-thermal radiation between well-separated emission episodes within a single GRB. Such a transition is a clear indication of the change of jet composition from a fireball to a Poynting-flux-dominated jet.

Název v anglickém jazyce

Transition from fireball to Poynting-flux-dominated outflow in the three-episode GRB 160625B

Popis výsledku anglicky

We report an extraordinarily bright GRB 160625B, simultaneously observed in gamma-ray and optical wavelengths, whose prompt emission consists of three isolated episodes separated by long quiescent intervals, with the durations of each sub-burst being approximately 0.8 s, 35 s and 212 s, respectively. Its high brightness (with isotropic peak luminosity L-p,L-iso approximate to 4 x 10(53) erg s(-1)) allows us to conduct detailed time-resolved spectral analysis in each episode, from precursor to main burst and to extended emission. The spectral properties of the first two sub-bursts are distinctly different, allowing us to observe the transition from thermal to non-thermal radiation between well-separated emission episodes within a single GRB. Such a transition is a clear indication of the change of jet composition from a fireball to a Poynting-flux-dominated jet.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Nature Astronomy

ISSN

2397-3366

e-ISSN

—

Svazek periodika

2

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

69-75

Kód UT WoS článku

000423480900023

EID výsledku v databázi Scopus

2-s2.0-85040326232