Perspectives of observing the color indices of optical afterglows of gamma-ray bursts with ESA Gaia

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00482639" target="_blank" >RIV/67985815:_____/17:00482639 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21230/17:00314154

Result on the web

<a href="http://dx.doi.org/10.1007/s10686-017-9550-5" target="_blank" >http://dx.doi.org/10.1007/s10686-017-9550-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10686-017-9550-5" target="_blank" >10.1007/s10686-017-9550-5</a>

Result language

angličtina

Original language name

Perspectives of observing the color indices of optical afterglows of gamma-ray bursts with ESA Gaia

Original language description

We propose a strategy for detecting and analyzing optical afterglows (OAs) of long gamma-ray bursts (GRBs) without the need to obtain their light curves. This approach is useful for the Gaia satellite, which provides sampled optical ultra-low-dispersion spectroscopic observations of the sky. For this purpose, we show that most OAs of long GRBs display specific values of some of their color indices, representing synchrotron emission of the jet. They are stable in time during the event. These indices, which can be determined from the spectra, are very similar for the ensemble of OAs with redshift z < 3.5 and display a strong clustering in some color-color diagrams. These indices also enable to constrain the properties of the local interstellar medium of GRBs. The long-lasting mapping of the sky with the Gaia instruments also gives us a hope to search for the so-called orphan afterglows, which, according to some authors, can be considerably more numerous than OAs of the observed GRBs. We also show how to resolve OAs from other transients in the Gaia data. The color indices and the properties of the quiescent sources (host galaxies of OAs detectable later by the large ground-based telescopes at the co-ordinates of the OA determined by Gaia) would tell us which one, among transients detected by Gaia, is a GRB OA.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GA13-33324S" target="_blank" >GA13-33324S: Lobster Eye X-Ray Monitor</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Experimental Astronomy

ISSN

0922-6435

e-ISSN

—

Volume of the periodical

44

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

18

Pages from-to

129-146

UT code for WoS article

000412076500007

EID of the result in the Scopus database

2-s2.0-85026824546