The unusual gamma-ray burst GRB 101225A from a helium star/neutron star merger at redshift 0.33

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00371960" target="_blank" >RIV/68378271:_____/11:00371960 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1038/nature10611" target="_blank" >http://dx.doi.org/10.1038/nature10611</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/nature10611" target="_blank" >10.1038/nature10611</a>

Result language

angličtina

Original language name

The unusual gamma-ray burst GRB 101225A from a helium star/neutron star merger at redshift 0.33

Original language description

Here we report observations of the unusual GRB 101225A. Its ?-ray emission was exceptionally long-lived and was followed by a bright X-ray transient with a hot thermal component and an unusual optical counterpart. During the first 10 days, the optical emission evolved as an expanding, cooling black body, after which an additional component, consistent with a faint supernova, emerged. We estimate its redshift to be z = 0.33 by fitting the spectral-energy distribution and light curve of the optical emission with a GRB-supernova template. Deep optical observations may have revealed a faint, unresolved host galaxy. Our proposed progenitor is a merger of a helium star with a neutron star that underwent a common envelope phase, expelling its hydrogen envelope. The resulting explosion created a GRB-like jet which became thermalized by interacting with the dense, previously ejected material, thus creating the observed black body, until finally the emission from the supernova dominated.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Nature

ISSN

0028-0836

e-ISSN

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Volume of the periodical

480

Issue of the periodical within the volume

7375

Country of publishing house

GB - UNITED KINGDOM

Number of pages

3

Pages from-to

72-74

UT code for WoS article

000298031900035

EID of the result in the Scopus database

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