Unveiling the multifaceted GRB 200613A: Prompt emission dynamics, afterglow evolution, and the host galaxy's properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00599709" target="_blank" >RIV/67985815:_____/24:00599709 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0357204" target="_blank" >https://hdl.handle.net/11104/0357204</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/ad6306" target="_blank" >10.3847/1538-4357/ad6306</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unveiling the multifaceted GRB 200613A: Prompt emission dynamics, afterglow evolution, and the host galaxy's properties

Popis výsledku v původním jazyce

We present our optical observations and multiwavelength analysis of the GRB 200613A detected by the Fermi satellite. Time-resolved spectral analysis of the prompt gamma-ray emission was conducted utilizing the Bayesian block method to determine statistically optimal time bins. Based on the Bayesian Information Criterion, the data generally favor the Band+blackbody (BB) model. We speculate that the main Band component comes from the Blandford-Znajek mechanism, while the additional BB component comes from the neutrino annihilation process. The BB component becomes significant for a low-spin, high-accretion-rate black hole central engine, as evidenced by our model comparison with the data. The afterglow light curve exhibits typical power-law decay, and its behavior can be explained by the collision between the ejecta and the constant interstellar medium. In addition, we employed the public Python package Prospector to perform a spectral energy distribution modeling of the host galaxy. The results suggest that the host galaxy is a massive galaxy ( log(M*/M circle dot)=11.75-0.09+0.10 ) with a moderate star formation rate ( SFR=22.58-7.22+13.63M circle dot yr-1). This SFR is consistent with the SFR of similar to 34.2M circle dot yr-1 derived from the [O ii] emission line in the observed spectrum.

Název v anglickém jazyce

Unveiling the multifaceted GRB 200613A: Prompt emission dynamics, afterglow evolution, and the host galaxy's properties

Popis výsledku anglicky

We present our optical observations and multiwavelength analysis of the GRB 200613A detected by the Fermi satellite. Time-resolved spectral analysis of the prompt gamma-ray emission was conducted utilizing the Bayesian block method to determine statistically optimal time bins. Based on the Bayesian Information Criterion, the data generally favor the Band+blackbody (BB) model. We speculate that the main Band component comes from the Blandford-Znajek mechanism, while the additional BB component comes from the neutrino annihilation process. The BB component becomes significant for a low-spin, high-accretion-rate black hole central engine, as evidenced by our model comparison with the data. The afterglow light curve exhibits typical power-law decay, and its behavior can be explained by the collision between the ejecta and the constant interstellar medium. In addition, we employed the public Python package Prospector to perform a spectral energy distribution modeling of the host galaxy. The results suggest that the host galaxy is a massive galaxy ( log(M*/M circle dot)=11.75-0.09+0.10 ) with a moderate star formation rate ( SFR=22.58-7.22+13.63M circle dot yr-1). This SFR is consistent with the SFR of similar to 34.2M circle dot yr-1 derived from the [O ii] emission line in the observed spectrum.

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

2024

Kód důvěrnosti údajů

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

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

1538-4357

Svazek periodika

974

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

221

Kód UT WoS článku

001331327000001

EID výsledku v databázi Scopus

2-s2.0-85207331635