HERMES: Gamma-ray burst and gravitational wave counterpart hunter

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00138382" target="_blank" >RIV/00216224:14310/24:00138382 - isvavai.cz</a>

Result on the web

<a href="https://www.aanda.org/articles/aa/full_html/2024/09/aa50006-24/aa50006-24.html" target="_blank" >https://www.aanda.org/articles/aa/full_html/2024/09/aa50006-24/aa50006-24.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202450006" target="_blank" >10.1051/0004-6361/202450006</a>

Result language

angličtina

Original language name

HERMES: Gamma-ray burst and gravitational wave counterpart hunter

Original language description

Gamma-ray bursts (GRBs) bridge relativistic astrophysics and multimessenger astronomy. Space–based γ- and X-ray wide-field detectors have proven essential for detecting and localizing the highly variable GRB prompt emission, which is also a counterpart of gravitational wave events. We studied the capability of detecting long and short GRBs with the High Energy Rapid Modular Ensemble of Satellites (HERMES) Pathfinder (HP) and SpIRIT, namely a swarm of six 3U CubeSats to be launched in early 2025, and a 6U CubeSat launched on December 1 2023. We also studied the capabilities of two advanced configurations of swarms of more than eight satellites with improved detector performances (HERMES Constellations). The HERMES detectors, sensitive down to ∼2–3 keV, will be able to detect faint and soft GRBs, which comprise X-ray flashes and high-redshift bursts. By combining state-of-the-art long- and short-GRB population models with a description of the single module performance, we estimate that HP will detect ∼195−21+22 long GRBs (3.4−0.8+0.3 at redshift z &gt; 6) and ∼19−3+5 short GRBs per year. The larger HERMES Constellations under study can detect between ∼1300 and ∼3000 long GRBs per year and between ∼160 and ∼400 short GRBs per year, depending on the chosen configuration, with a rate of long GRBs above z &gt; 6 of between 30 and 75 per year. Finally, we explored the capability of HERMES to detect short GRBs as electromagnetic counterparts of binary neutron star (BNS) mergers detected as gravitational signals by current and future ground–based interferometers. Under the assumption that the GRB jets are structured, we estimate that HP can provide up to ∼1 (14) yr−1 joint detections during the fifth LIGO–Virgo–KAGRA observing run (Einstein Telescope single triangle 10 km arm configuration). These numbers become ∼4 (100) yr−1, respectively, for the HERMES Constellation configuration.

Czech name

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Czech description

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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

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

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

Name of the periodical

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

—

Volume of the periodical

689

Issue of the periodical within the volume

September

Country of publishing house

FR - FRANCE

Number of pages

12

Pages from-to

1-12

UT code for WoS article

001400091800009

EID of the result in the Scopus database

2-s2.0-85204190736