Testing gravity with cold-atom clocks in space: The ACES mission

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00342055" target="_blank" >RIV/68407700:21340/20:00342055 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1140/epjd/e2020-10167-7" target="_blank" >https://doi.org/10.1140/epjd/e2020-10167-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjd/e2020-10167-7" target="_blank" >10.1140/epjd/e2020-10167-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Testing gravity with cold-atom clocks in space: The ACES mission

Popis výsledku v původním jazyce

Atomic Clock Ensemble in Space (ACES) is a mission designed to test Einstein’s theory of General Relativity from the International Space Station (ISS). A primary frequency standard based on laser cooled caesium atoms (PHARAO) and an active H-maser (SHM) generate a clock signal that is distributed to a network of clocks on the ground to perform space-to-ground comparison. With a fractional frequency stability of 1x10-16 after 10 days of integration time and an accuracy of 1-2x10-16 , ACES will provide an absolute measurement of the gravitational redshift, it will search for time variations of fundamental constant, and perform Standard Model Extension (SME) tests. The ACES payload is currently completing its qualification tests before flying. The mission status, the latest test results, and the ACES performance for testing General Relativity are discussed.

Název v anglickém jazyce

Testing gravity with cold-atom clocks in space: The ACES mission

Popis výsledku anglicky

Atomic Clock Ensemble in Space (ACES) is a mission designed to test Einstein’s theory of General Relativity from the International Space Station (ISS). A primary frequency standard based on laser cooled caesium atoms (PHARAO) and an active H-maser (SHM) generate a clock signal that is distributed to a network of clocks on the ground to perform space-to-ground comparison. With a fractional frequency stability of 1x10-16 after 10 days of integration time and an accuracy of 1-2x10-16 , ACES will provide an absolute measurement of the gravitational redshift, it will search for time variations of fundamental constant, and perform Standard Model Extension (SME) tests. The ACES payload is currently completing its qualification tests before flying. The mission status, the latest test results, and the ACES performance for testing General Relativity are discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

The European Physical Journal D

ISSN

1434-6060

e-ISSN

1434-6079

Svazek periodika

74

Číslo periodika v rámci svazku

164

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000560347800003

EID výsledku v databázi Scopus

2-s2.0-85089007765