Laboratory Universe and Theories

The Laboratoire Univers et Théories (LUTH) is a joint research unit (UMR 8102) of CNRS, Observatoire de Paris and Université de Paris Cité. The laboratory is comprised of about fifty people, of which about half are professional researchers (CNRS, Universities, CNAP). The scientific activity of the laboratory is mainly focused on the theoretical study of astrophysical systems and their modeling, a part of which concerns the processing of data from high-energy observations.

The laboratory is currently organized around three main themes:
cosmology, high energy phenomena and general relativity and compact objects.

<p>First image of the simulated distribution of matter in the entire volume of the observable universe (Full Universe Run simulation): in addition to the standard model shown here, two other dark energy models were simulated to extract their specific fingerprints on the formation of large structures.</p>

<p>Image of an accretion disk orbiting a rapidly rotating wormhole, computed by F. Lamy, E. Gourgoulhon, T. Paumard & F. H. Vincent, Class. Quantum Gravity 35, 115009 (2018) (<a href="https://doi.org/10.1088/1361-6382/aabd97" class="spip_out" rel="external">paper</a>)</p>

<p>Theoretical distribution of iron at different depths in the atmosphere of a magnetic star after microscopic diffusion. Numerical simulation with a non-dipole magnetic field geometry (see Alecian & Stift 2017).</p>

<p>Mapping of the Milky Way in three energy domains: infrared, optical and gamma (HESS), and simulated image of the expected results with CTA.<br class='autobr' />
Credits: CTA consortium, GCT collaboration, Observatoire de Paris, ESO.</p>

<p>Prototype built by the Paris Observatory under the scientific responsibility of the LUTH in preparation of the international project CTA.<br class='autobr' />
Credits; Observatoire de Paris, CNRS, Region Ile de France</p>

<p>Composite image (X-ray, radio, and optical) of the galaxy Centaurus A, a gamma-ray source located more than thirteen million light-years away, showing a large jet of matter emitted by the active region of the central black hole. <br class='autobr' />
Credits: IAC, NASA, ESA, SSC, CXC and STScI</p>

Some pictures illustrating the activities of the Luth

News

Euclid Consortium first science results

On Thursday May 23rd, the Euclid Consortium, including members of LUTH/Paris Observatory-PSL, releases its first science results as well as 5 new (…)

Read more

GW230529: Observation of the merger of a neutron star and an unknown compact object

On 29 May 2023, during the first part of the fourth observing run (O4a) of the LIGO-Virgo-KAGRA detectors, a peculiar merger of two stars was (…)

Read more

ESA officially adopts the LISA mission!

On Thursday January 25, 2024, the European Space Agency’s Scientific Program Committee (SPC) officially approved the start of development of the (…)

Read more

Eric Gourgoulhon dans l’émission « La Science CQFD » sur France Culture

Eric Gourgoulhon, Directeur de Recherche CNRS et membre de l’équipe Relativité et Objets Compacts au Laboratoire Univers et Théories, parle de la (…)

Read more

Journée du laboratoire 2022

La journée du laboratoire a eu lieu le mercredi 7 décembre 2022 . Vous trouverez ci-dessous les présentations des orateurs de cette journée. (…)

Read more

Conférence en l’honneur de Brandon Carter

To celebrate the 80th birthday of a prominent LUTH researcher, Brandon Carter, an international conference was jointly organized by IAP and LUTH (…)

Read more

Next Seminars

Thursday 7 November from 11:00 to 12:00

Contrasting neutron star heating mechanisms with Hubble Space Telescope observations

par L.E. Rodriguez
Thursday 14 November from 11:00 to 15:00

Séminaire API (trous noirs et EHT)

par Andrew Chael et Aaron Held

Tutorship