SYRTE

Hephahestos forges activated by Earth’s rotation

30 November 2019

The sismicity and eruptivity of the Giant of Siciliy could be activated, at interannual time scales, by the pole tide, directly related to the motion of the Earth’s rotation pole about the mean pole. Study published by Sébastien Lambert and Gianluca Sottili (Is there an influence of the pole tide on volcanism? Insights from Mount Etna recent activity, Geophysical Research Letters, DOI:10.1029/2019GL085525, 2019).
Suzanne Débarbat recieves the Price Paul Doistau-Émile Blutet de l’Information Scientifique

28 November 2019

The Prize, awarded by the Academy of Sciences, recognizes Suzanne Débarbat’s work in the history of science.
How to redefine the second with optical clocks?

12 September 2019

The second of the International System of Units (SI) is defined from the hyperfine transition of the 133Cs atom. In the current context where many new generation optical clocks surpass 133Cs based clocks, could the second one be redefined, not from a single transition but from several? An article published in Metrologia proposes such a definition, and shows that it is free of contradiction and feasible according to all the criteria in effect at the Comité International des Poids et Mesures (CIPM).
G7-research delegates at SYRTE

26 June 2019

G7-research delegates (from Germany, Canada, USA, France, Italy, Japan, UK) and EU-delegates had a visit at SYRTE on Thursday 20 june, 2019.
Record breaking performance for a cold atom inertial sensor

5 February 2019

The SYRTE gyroscope beats new performance records !
Muquans quantum gravimeter validated

22 October 2018

The first quantum commercial gravimeter, derived from SYRTE research and marketed by the start-up Muquans, was delivered. In-field measurement campaigns, lasting about one month, were carried out sucessfully.
Does quantum entanglement influence the universality of free fall?

31 January 2018

Remi Geiger (Paris Observatory) and Michael Trupke (Vienna University) have proposed a conceptually new way of testing the foundational principle of General Relativity with a system of two entangled atoms
Michel Abgrall, Jocelyne Guéna et Daniele Rovera receive the “Prix LNE de la Recherche”

19 December 2017

The prize recognizes the work of Michel Abgrall, Jocelyne Guéna et Daniele Rovera related to the realization, the use and the provision of primary frequency and time references.
A list of publications linked to the work can be found here.
Find more on the website of LNE or of Observatoire de Paris.
Leap second at the end of December 2016

6 December 2016

A positive leap second was inserted in the national reference time UTC(OP) on 31 December 2016:
2016-12-31 T 23h 59min 59s 23h 59min 60s 00h 00min 00s (UTC)
2017-01-01 T 00h 59min 59s 00h 59min 60s 01h 00min 00s (Local time)
GAIA : An unrivaled high precision mapping of our Galaxy

21 September 2016

ESA and DPAC release the first results of the space mission GAIA, launched about 1000 days before. The results show the unique measure of the distance to many stars and improve the precision of the one already known from the Hipparcos catalogue by a factor of 3.

It is a leader in time and frequenciy metrology and is also specialized in Earth rotation, celestial reference frame and history of Astronomy.
SYRTE has a multidisciplinary research activity with transverse expertise in theory, instrumentation and data analysis and various goals from fundamental physics tests to industrial transfers.It is founder membre of Laboratoire d’Excellence du Programme Investissements d’Avenir FIRST-TF.

It has in charge several international services. Associated with the LNE - Laboratoire National de Métrologie et d’Essais - the SYRTE has the responsability of the national reference time and frequence. With the IERS (International Earth Rotation Service), it deliver Earth rotation parameters and other services.

Its teams take part in training and education by giving university lectures and also spread scientific culture by organizing public talks.

Heure légale française [...]

Hephahestos forges activated by Earth’s rotation

Suzanne Débarbat recieves the Price Paul Doistau-Émile Blutet de l’Information Scientifique

How to redefine the second with optical clocks?

G7-research delegates at SYRTE

Record breaking performance for a cold atom inertial sensor

Muquans quantum gravimeter validated

Does quantum entanglement influence the universality of free fall?

Michel Abgrall, Jocelyne Guéna et Daniele Rovera receive the “Prix LNE de la Recherche”

Leap second at the end of December 2016

GAIA : An unrivaled high precision mapping of our Galaxy